Parameters:
value:
A pointer to a null-terminated array of Unicode characters.

Exceptions:
System.ArgumentOutOfRangeException:
The current process does not have read access to all the addressed characters.
System.ArgumentException:
value specifies an array that contains an invalid Unicode character, or value
specifies an address less than 64000.

Parameters:
value:
An array of Unicode characters.

Parameters:
value:
A pointer to a null-terminated array of 8-bit signed integers.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentException:
A new instance of System.String could not be initialized using value, assuming
value is encoded in ANSI.
System.ArgumentOutOfRangeException:
The length of the new string to initialize, which is determined by the null
termination character of value, is too large to allocate.
System.AccessViolationException:
value specifies an invalid address.

Parameters:
c:
A Unicode character.
count:
The number of times c occurs.

Exceptions:
System.ArgumentOutOfRangeException:
count is less than zero.

Parameters:
value:
A pointer to an array of Unicode characters.
startIndex:
The starting position within value.
length:
The number of characters within value to use.

Exceptions:
System.ArgumentOutOfRangeException:
startIndex or length is less than zero, value + startIndex cause a pointer
overflow, or the current process does not have read access to all the addressed
characters.
System.ArgumentException:
value specifies an array that contains an invalid Unicode character, or value
+ startIndex specifies an address less than 64000.

Parameters:
value:
An array of Unicode characters.
startIndex:
The starting position within value.
length:
The number of characters within value to use.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentOutOfRangeException:
startIndex or length is less than zero.-or- The sum of startIndex and length
is greater than the number of elements in value.

Parameters:
value:
A pointer to an array of 8-bit signed integers.
startIndex:
The starting position within value.
length:
The number of characters within value to use.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentOutOfRangeException:
startIndex or length is less than zero. -or-The address specified by value
+ startIndex is too large for the current platform; that is, the address
calculation overflowed. -or-The length of the new string to initialize is
too large to allocate.
System.ArgumentException:
The address specified by value + startIndex is less than 64K.-or- A new instance
of System.String could not be initialized using value, assuming value is
encoded in ANSI.
System.AccessViolationException:
value, startIndex, and length collectively specify an invalid address.

Parameters:
value:
A pointer to an array of 8-bit signed integers.
startIndex:
The starting position within value.
length:
The number of characters within value to use.
enc:
An object that specifies how the array referenced by value is encoded. If
enc is null, ANSI encoding is assumed.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentOutOfRangeException:
startIndex or length is less than zero. -or-The address specified by value
+ startIndex is too large for the current platform; that is, the address
calculation overflowed. -or-The length of the new string to initialize is
too large to allocate.
System.ArgumentException:
The address specified by value + startIndex is less than 64K.-or- A new instance
of System.String could not be initialized using value, assuming value is
encoded as specified by enc.
System.AccessViolationException:
value, startIndex, and length collectively specify an invalid address.

Exceptions:
The number of characters in the current string.

Parameters:
index:
A position in the current string.

Exceptions:
The object at position index.

Exceptions:
System.IndexOutOfRangeException:
index is greater than or equal to the length of this object or less than
zero.

Parameters:
a:
The first string to compare, or null.
b:
The second string to compare, or null.

Exceptions:
true if the value of a is different from the value of b; otherwise, false.

Parameters:
a:
The first string to compare, or null.
b:
The second string to compare, or null.

Exceptions:
true if the value of a is the same as the value of b; otherwise, false.

Exceptions:
This instance of System.String.

Parameters:
strA:
The first string to compare.
strB:
The second string to compare.

Exceptions:
A 32-bit signed integer that indicates the lexical relationship between the
two comparands.Value Condition Less than zero strA precedes strB in the sort
order. Zero strA occurs in the same position as strB in the sort order. Greater
than zero strA follows strB in the sort order.

Parameters:
strA:
The first string to compare.
strB:
The second string to compare.
ignoreCase:
true to ignore case during the comparison; otherwise, false.

Exceptions:
A 32-bit signed integer that indicates the lexical relationship between the
two comparands.Value Condition Less than zero strA precedes strB in the sort
order. Zero strA occurs in the same position as strB in the sort order. Greater
than zero strA follows strB in the sort order.

Parameters:
strA:
The first string to compare.
strB:
The second string to compare.
comparisonType:
One of the enumeration values that specifies the rules to use in the comparison.

Exceptions:
A 32-bit signed integer that indicates the lexical relationship between the
two comparands.Value Condition Less than zero strA precedes strB in the sort
order. Zero strA is in the same position as strB in the sort order. Greater
than zero strA follows strB in the sort order.

Exceptions:
System.ArgumentException:
comparisonType is not a System.StringComparison value.
System.NotSupportedException:
System.StringComparison is not supported.

Parameters:
strA:
The first string to compare.
strB:
The second string to compare.
ignoreCase:
true to ignore case during the comparison; otherwise, false.
culture:
An object that supplies culture-specific comparison information.

Exceptions:
A 32-bit signed integer that indicates the lexical relationship between the
two comparands.Value Condition Less than zero strA precedes strB in the sort
order. Zero strA occurs in the same position as strB in the sort order. Greater
than zero strA follows strB in the sort order.

Exceptions:
System.ArgumentNullException:
culture is null.

Parameters:
strA:
The first string to compare.
strB:
The second string to compare.
culture:
The culture that supplies culture-specific comparison information.
options:
Options to use when performing the comparison (such as ignoring case or symbols).

Exceptions:
A 32-bit signed integer that indicates the lexical relationship between strA
and strB, as shown in the following tableValueConditionLess than zerostrA
precedes strB in the sort order. ZerostrA occurs in the same position as
strB in the sort order. Greater than zerostrA follows strB in the sort order.

Exceptions:
System.ArgumentException:
options is not a System.Globalization.CompareOptions value.
System.ArgumentNullException:
culture is null.

Parameters:
strA:
The first string to use in the comparison.
indexA:
The position of the substring within strA.
strB:
The second string to use in the comparison.
indexB:
The position of the substring within strB.
length:
The maximum number of characters in the substrings to compare.

Exceptions:
A 32-bit signed integer indicating the lexical relationship between the two
comparands.Value Condition Less than zero The substring in strA precedes
the substring in strB in the sort order. Zero The substrings occur in the
same position in the sort order, or length is zero. Greater than zero The
substring in strA follows the substring in strB in the sort order.

Exceptions:
System.ArgumentOutOfRangeException:
indexA is greater than strA.System.String.Length.-or- indexB is greater than
strB.System.String.Length.-or- indexA, indexB, or length is negative. -or-Either
indexA or indexB is null, and length is greater than zero.

Parameters:
strA:
The first string to use in the comparison.
indexA:
The position of the substring within strA.
strB:
The second string to use in the comparison.
indexB:
The position of the substring within strB.
length:
The maximum number of characters in the substrings to compare.
ignoreCase:
true to ignore case during the comparison; otherwise, false.

Exceptions:
A 32-bit signed integer that indicates the lexical relationship between the
two comparands.ValueCondition Less than zero The substring in strA precedes
the substring in strB in the sort order. Zero The substrings occur in the
same position in the sort order, or length is zero. Greater than zero The
substring in strA follows the substring in strB in the sort order.

Exceptions:
System.ArgumentOutOfRangeException:
indexA is greater than strA.System.String.Length.-or- indexB is greater than
strB.System.String.Length.-or- indexA, indexB, or length is negative. -or-Either
indexA or indexB is null, and length is greater than zero.

Parameters:
strA:
The first string to use in the comparison.
indexA:
The position of the substring within strA.
strB:
The second string to use in the comparison.
indexB:
The position of the substring within strB.
length:
The maximum number of characters in the substrings to compare.
comparisonType:
One of the enumeration values that specifies the rules to use in the comparison.

Exceptions:
A 32-bit signed integer that indicates the lexical relationship between the
two comparands.Value Condition Less than zero The substring in strA precedes
the substring in strB in the sort order.Zero The substrings occur in the
same position in the sort order, or the length parameter is zero. Greater
than zero The substring in strA follllows the substring in strB in the sort
order.

Exceptions:
System.ArgumentOutOfRangeException:
indexA is greater than strA.System.String.Length.-or- indexB is greater than
strB.System.String.Length.-or- indexA, indexB, or length is negative. -or-Either
indexA or indexB is null, and length is greater than zero.
System.ArgumentException:
comparisonType is not a System.StringComparison value.

Parameters:
strA:
The first string to use in the comparison.
indexA:
The position of the substring within strA.
strB:
The second string to use in the comparison.
indexB:
The position of the substring within strB.
length:
The maximum number of characters in the substrings to compare.
ignoreCase:
true to ignore case during the comparison; otherwise, false.
culture:
An object that supplies culture-specific comparison information.

Exceptions:
An integer that indicates the lexical relationship between the two comparands.Value
Condition Less than zero The substring in strA precedes the substring in
strB in the sort order. Zero The substrings occur in the same position in
the sort order, or length is zero. Greater than zero The substring in strA
follows the substring in strB in the sort order.

Exceptions:
System.ArgumentOutOfRangeException:
indexA is greater than strA.System.String.Length.-or- indexB is greater than
strB.System.String.Length.-or- indexA, indexB, or length is negative. -or-Either
strA or strB is null, and length is greater than zero.
System.ArgumentNullException:
culture is null.

Parameters:
strA:
The first string to use in the comparison.
indexA:
The starting position of the substring within strA.
strB:
The second string to use in the comparison.
indexB:
The starting position of the substring within strB.
length:
The maximum number of characters in the substrings to compare.
culture:
An object that supplies culture-specific comparison information.
options:
Options to use when performing the comparison (such as ignoring case or symbols).

Exceptions:
An integer that indicates the lexical relationship between the two substrings,
as shown in the following table.ValueConditionLess than zeroThe substring
in strA precedes the substring in strB in the sort order.ZeroThe substrings
occur in the same position in the sort order, or length is zero.Greater than
zeroThe substring in strA follows the substring in strB in the sort order.

Exceptions:
System.ArgumentException:
options is not a System.Globalization.CompareOptions value.
System.ArgumentOutOfRangeException:
indexA is greater than strA.Length.-or-indexB is greater than strB.Length.-or-indexA,
indexB, or length is negative.-or-Either strA or strB is null, and length
is greater than zero.
System.ArgumentNullException:
culture is null.

Parameters:
strA:
The first string to compare.
strB:
The second string to compare.

Exceptions:
An integer that indicates the lexical relationship between the two comparands.ValueCondition
Less than zero strA is less than strB. Zero strA and strB are equal. Greater
than zero strA is greater than strB.

Parameters:
strA:
The first string to use in the comparison.
indexA:
The starting index of the substring in strA.
strB:
The second string to use in the comparison.
indexB:
The starting index of the substring in strB.
length:
The maximum number of characters in the substrings to compare.

Exceptions:
A 32-bit signed integer that indicates the lexical relationship between the
two comparands.ValueCondition Less than zero The substring in strA is less
than the substring in strB. Zero The substrings are equal, or length is zero.
Greater than zero The substring in strA is greater than the substring in
strB.

Exceptions:
System.ArgumentOutOfRangeException:
strA is not null and indexA is greater than strA.System.String.Length.-or-
strB is not null andindexB is greater than strB.System.String.Length.-or-
indexA, indexB, or length is negative.

Parameters:
value:
An object that evaluates to a System.String.

Exceptions:
A 32-bit signed integer that indicates whether this instance precedes, follows,
or appears in the same position in the sort order as the value parameter.Value
Condition Less than zero This instance precedes value. Zero This instance
has the same position in the sort order as value. Greater than zero This
instance follows value.-or- value is null.

Exceptions:
System.ArgumentException:
value is not a System.String.

Parameters:
strB:
The string to compare with this instance.

Exceptions:
A 32-bit signed integer that indicates whether this instance precedes, follows,
or appears in the same position in the sort order as the strB parameter.Value
Condition Less than zero This instance precedes strB. Zero This instance
has the same position in the sort order as strB. Greater than zero This instance
follows strB.-or- strB is null.

Parameters:
values:
A collection object that implements System.Collections.Generic.IEnumerable<T>
and whose generic type argument is System.String.

Exceptions:
The concatenated strings in values.

Exceptions:
System.ArgumentNullException:
values is null.

Parameters:
values:
A collection object that implements the System.Collections.Generic.IEnumerable<T>
interface.
Type parameters:
T:
The type of the members of values.

Exceptions:
The concatenated members in values.

Exceptions:
System.ArgumentNullException:
values is null.

Parameters:
arg0:
The object to represent, or null.

Exceptions:
The string representation of the value of arg0, or System.String.Empty if
arg0 is null.

Parameters:
args:
An object array that contains the elements to concatenate.

Exceptions:
The concatenated string representations of the values of the elements in
args.

Exceptions:
System.ArgumentNullException:
args is null.
System.OutOfMemoryException:
Out of memory.

Parameters:
values:
An array of string instances.

Exceptions:
The concatenated elements of values.

Exceptions:
System.ArgumentNullException:
values is null.
System.OutOfMemoryException:
Out of memory.

Parameters:
arg0:
The first object to concatenate.
arg1:
The second object to concatenate.

Exceptions:
The concatenated string representations of the values of arg0 and arg1.

Parameters:
str0:
The first string to concatenate.
str1:
The second string to concatenate.

Exceptions:
The concatenation of str0 and str1.

Parameters:
arg0:
The first object to concatenate.
arg1:
The second object to concatenate.
arg2:
The third object to concatenate.

Exceptions:
The concatenated string representations of the values of arg0, arg1, and
arg2.

Parameters:
str0:
The first string to concatenate.
str1:
The second string to concatenate.
str2:
The third string to concatenate.

Exceptions:
The concatenation of str0, str1, and str2.

Parameters:
arg0:
The first object to concatenate.
arg1:
The second object to concatenate.
arg2:
The third object to concatenate.
arg3:
The fourth object to concatenate.

Exceptions:
The concatenated string representation of each value in the parameter list.

Parameters:
str0:
The first string to concatenate.
str1:
The second string to concatenate.
str2:
The third string to concatenate.
str3:
The fourth string to concatenate.

Exceptions:
The concatenation of str0, str1, str2, and str3.

Parameters:
value:
The string to seek.

Exceptions:
true if the value parameter occurs within this string, or if value is the
empty string (""); otherwise, false.

Exceptions:
System.ArgumentNullException:
value is null.

Parameters:
str:
The string to copy.

Exceptions:
A new string with the same value as str.

Exceptions:
System.ArgumentNullException:
str is null.

Parameters:
sourceIndex:
The index of the first character in this instance to copy.
destination:
An array of Unicode characters to which characters in this instance are copied.
destinationIndex:
The index in destination at which the copy operation begins.
count:
The number of characters in this instance to copy to destination.

Exceptions:
System.ArgumentNullException:
destination is null.
System.ArgumentOutOfRangeException:
sourceIndex, destinationIndex, or count is negative -or- sourceIndex does
not identify a position in the current instance. -or-destinationIndex does
not identify a valid index in the destination array. -or-count is greater
than the length of the substring from startIndex to the end of this instance
-or- count is greater than the length of the subarray from destinationIndex
to the end of the destination array.

Parameters:
value:
The string to compare to the substring at the end of this instance.

Exceptions:
true if value matches the end of this instance; otherwise, false.

Exceptions:
System.ArgumentNullException:
value is null.

Parameters:
value:
The string to compare to the substring at the end of this instance.
comparisonType:
One of the enumeration values that determines how this string and value are
compared.

Exceptions:
true if the value parameter matches the end of this string; otherwise, false.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentException:
comparisonType is not a System.StringComparison value.

Parameters:
value:
The string to compare to the substring at the end of this instance.
ignoreCase:
true to ignore case during the comparison; otherwise, false.
culture:
Cultural information that determines how this instance and value are compared.
If culture is null, the current culture is used.

Exceptions:
true if the value parameter matches the end of this string; otherwise, false.

Exceptions:
System.ArgumentNullException:
value is null.

Parameters:
obj:
The string to compare to this instance.

Exceptions:
true if obj is a System.String and its value is the same as this instance;
otherwise, false. If obj is null, the method returns false.

Parameters:
value:
The string to compare to this instance.

Exceptions:
true if the value of the value parameter is the same as the value of this
instance; otherwise, false. If value is null, the method returns false.

Parameters:
a:
The first string to compare, or null.
b:
The second string to compare, or null.

Exceptions:
true if the value of a is the same as the value of b; otherwise, false. If
both a and b are null, the method returns true.

Parameters:
value:
The string to compare to this instance.
comparisonType:
One of the enumeration values that specifies how the strings will be compared.

Exceptions:
true if the value of the value parameter is the same as this string; otherwise,
false.

Exceptions:
System.ArgumentException:
comparisonType is not a System.StringComparison value.

Parameters:
a:
The first string to compare, or null.
b:
The second string to compare, or null.
comparisonType:
One of the enumeration values that specifies the rules for the comparison.

Exceptions:
true if the value of the a parameter is equal to the value of the b parameter;
otherwise, false.

Exceptions:
System.ArgumentException:
comparisonType is not a System.StringComparison value.

Parameters:
format:
A composite format string.
arg0:
The object to format.

Exceptions:
A copy of format in which any format items are replaced by the string representation
of arg0.

Exceptions:
System.ArgumentNullException:
format is null.
System.FormatException:
The format item in format is invalid.-or- The index of a format item is not
zero.

Parameters:
format:
A composite format string.
args:
An object array that contains zero or more objects to format.

Exceptions:
A copy of format in which the format items have been replaced by the string
representation of the corresponding objects in args.

Exceptions:
System.ArgumentNullException:
format or args is null.
System.FormatException:
format is invalid.-or- The index of a format item is less than zero, or greater
than or equal to the length of the args array.

Parameters:
provider:
An object that supplies culture-specific formatting information.
format:
A composite format string.
arg0:
The object to format.

Exceptions:
A copy of format in which the format item or items have been replaced by
the string representation of arg0.

Exceptions:
System.ArgumentNullException:
format or arg0 is null.
System.FormatException:
format is invalid.-or- The index of a format item is less than zero, or greater
than or equal to one.

Parameters:
provider:
An object that supplies culture-specific formatting information.
format:
A composite format string.
args:
An object array that contains zero or more objects to format.

Exceptions:
A copy of format in which the format items have been replaced by the string
representation of the corresponding objects in args.

Exceptions:
System.ArgumentNullException:
format or args is null.
System.FormatException:
format is invalid.-or- The index of a format item is less than zero, or greater
than or equal to the length of the args array.

Parameters:
format:
A composite format string.
arg0:
The first object to format.
arg1:
The second object to format.

Exceptions:
A copy of format in which format items are replaced by the string representations
of arg0 and arg1.

Exceptions:
System.ArgumentNullException:
format is null.
System.FormatException:
format is invalid.-or- The index of a format item is not zero or one.

Parameters:
provider:
An object that supplies culture-specific formatting information.
format:
A composite format string.
arg0:
The first object to format.
arg1:
The second object to format.

Exceptions:
A copy of format in which format items are replaced by the string representations
of arg0 and arg1.

Exceptions:
System.ArgumentNullException:
format, arg0, or arg1 is null.
System.FormatException:
format is invalid.-or- The index of a format item is less than zero, or greater
than or equal to two.

Parameters:
format:
A composite format string.
arg0:
The first object to format.
arg1:
The second object to format.
arg2:
The third object to format.

Exceptions:
A copy of format in which the format items have been replaced by the string
representations of arg0, arg1, and arg2.

Exceptions:
System.ArgumentNullException:
format is null.
System.FormatException:
format is invalid.-or- The index of a format item is less than zero, or greater
than two.

Parameters:
provider:
An object that supplies culture-specific formatting information.
format:
A composite format string.
arg0:
The first object to format.
arg1:
The second object to format.
arg2:
The third object to format.

Exceptions:
A copy of format in which the format items have been replaced by the string
representations of arg0, arg1, and arg2.

Exceptions:
System.ArgumentNullException:
format, arg0, arg1, or arg2 is null.
System.FormatException:
format is invalid.-or- The index of a format item is less than zero, or greater
than or equal to three.

Exceptions:
An enumerator object.

Exceptions:
A 32-bit signed integer hash code.

Exceptions:
The enumerated constant, System.TypeCode.String.

Parameters:
value:
A Unicode character to seek.

Exceptions:
The zero-based index position of value if that character is found, or -1
if it is not.

Parameters:
value:
The string to seek.

Exceptions:
The zero-based index position of value if that string is found, or -1 if
it is not. If value is System.String.Empty, the return value is 0.

Exceptions:
System.ArgumentNullException:
value is null.

Parameters:
value:
A Unicode character to seek.
startIndex:
The search starting position.

Exceptions:
The zero-based index position of value if that character is found, or -1
if it is not.

Exceptions:
System.ArgumentOutOfRangeException:
startIndex is less than 0 (zero) or greater than the length of the string.

Parameters:
value:
The string to seek.
startIndex:
The search starting position.

Exceptions:
The zero-based index position of value if that string is found, or -1 if
it is not. If value is System.String.Empty, the return value is startIndex.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentOutOfRangeException:
startIndex is less than 0 (zero) or greater than the length of this string.

Parameters:
value:
The string to seek.
comparisonType:
One of the enumeration values that specifies the rules for the search.

Exceptions:
The index position of the value parameter if that string is found, or -1
if it is not. If value is System.String.Empty, the return value is 0.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentException:
comparisonType is not a valid System.StringComparison value.

Parameters:
value:
A Unicode character to seek.
startIndex:
The search starting position.
count:
The number of character positions to examine.

Exceptions:
The zero-based index position of value if that character is found, or -1
if it is not.

Exceptions:
System.ArgumentOutOfRangeException:
count or startIndex is negative.-or- startIndex is greater than the length
of this string.-or-count is greater than the length of this string minus
startIndex.

Parameters:
value:
The string to seek.
startIndex:
The search starting position.
count:
The number of character positions to examine.

Exceptions:
The zero-based index position of value if that string is found, or -1 if
it is not. If value is System.String.Empty, the return value is startIndex.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentOutOfRangeException:
count or startIndex is negative.-or- startIndex is greater than the length
of this string.-or-count is greater than the length of this string minus
startIndex.

Parameters:
value:
The string to seek.
startIndex:
The search starting position.
comparisonType:
One of the enumeration values that specifies the rules for the search.

Exceptions:
The zero-based index position of the value parameter if that string is found,
or -1 if it is not. If value is System.String.Empty, the return value is
startIndex.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentOutOfRangeException:
startIndex is less than 0 (zero) or greater than the length of this string.
System.ArgumentException:
comparisonType is not a valid System.StringComparison value.

Parameters:
value:
The string to seek.
startIndex:
The search starting position.
count:
The number of character positions to examine.
comparisonType:
One of the enumeration values that specifies the rules for the search.

Exceptions:
The zero-based index position of the value parameter if that string is found,
or -1 if it is not. If value is System.String.Empty, the return value is
startIndex.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentOutOfRangeException:
count or startIndex is negative.-or- startIndex is greater than the length
of this instance.-or-count is greater than the length of this string minus
startIndex.
System.ArgumentException:
comparisonType is not a valid System.StringComparison value.

Parameters:
anyOf:
A Unicode character array containing one or more characters to seek.

Exceptions:
The zero-based index position of the first occurrence in this instance where
any character in anyOf was found; -1 if no character in anyOf was found.

Exceptions:
System.ArgumentNullException:
anyOf is null.

Parameters:
anyOf:
A Unicode character array containing one or more characters to seek.
startIndex:
The search starting position.

Exceptions:
The zero-based index position of the first occurrence in this instance where
any character in anyOf was found; -1 if no character in anyOf was found.

Exceptions:
System.ArgumentNullException:
anyOf is null.
System.ArgumentOutOfRangeException:
startIndex is negative.-or- startIndex is greater than the number of characters
in this instance.

Parameters:
anyOf:
A Unicode character array containing one or more characters to seek.
startIndex:
The search starting position.
count:
The number of character positions to examine.

Exceptions:
The zero-based index position of the first occurrence in this instance where
any character in anyOf was found; -1 if no character in anyOf was found.

Exceptions:
System.ArgumentNullException:
anyOf is null.
System.ArgumentOutOfRangeException:
count or startIndex is negative.-or- count + startIndex is greater than the
number of characters in this instance.

Parameters:
startIndex:
The zero-based index position of the insertion.
value:
The string to insert.

Exceptions:
A new string that is equivalent to this instance, but with value inserted
at position startIndex.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentOutOfRangeException:
startIndex is negative or greater than the length of this instance.

Parameters:
str:
A string to search for in the intern pool.

Exceptions:
The system's reference to str, if it is interned; otherwise, a new reference
to a string with the value of str.

Exceptions:
System.ArgumentNullException:
str is null.

Parameters:
str:
The string to search for in the intern pool.

Exceptions:
A reference to str if it is in the common language runtime intern pool; otherwise,
null.

Exceptions:
System.ArgumentNullException:
str is null.

Exceptions:
true if this string is in normalization form C; otherwise, false.

Exceptions:
System.ArgumentException:
The current instance contains invalid Unicode characters.

Parameters:
normalizationForm:
A Unicode normalization form.

Exceptions:
true if this string is in the normalization form specified by the normalizationForm
parameter; otherwise, false.

Exceptions:
System.ArgumentException:
The current instance contains invalid Unicode characters.

Parameters:
value:
The string to test.

Exceptions:
true if the value parameter is null or an empty string (""); otherwise, false.

Parameters:
value:
The string to test.

Exceptions:
true if the value parameter is null or System.String.Empty, or if value consists
exclusively of white-space characters.

Parameters:
separator:
The string to use as a separator. separator is included in the returned string
only if values has more than one element.
values:
A collection that contains the strings to concatenate.

Exceptions:
A string that consists of the members of values delimited by the separator
string. If values has no members, the method returns System.String.Empty.

Exceptions:
System.ArgumentNullException:
values is null.

Parameters:
separator:
The string to use as a separator. separator is included in the returned string
only if values has more than one element.
values:
A collection that contains the objects to concatenate.
Type parameters:
T:
The type of the members of values.

Exceptions:
A string that consists of the members of values delimited by the separator
string. If values has no members, the method returns System.String.Empty.

Exceptions:
System.ArgumentNullException:
values is null.

Parameters:
separator:
The string to use as a separator. separator is included in the returned string
only if values has more than one element.
values:
An array that contains the elements to concatenate.

Exceptions:
A string that consists of the elements of values delimited by the separator
string. If values is an empty array, the method returns System.String.Empty.

Exceptions:
System.ArgumentNullException:
values is null.

Parameters:
separator:
The string to use as a separator. separator is included in the returned string
only if value has more than one element.
value:
An array that contains the elements to concatenate.

Exceptions:
A string that consists of the elements in value delimited by the separator
string. If value is an empty array, the method returns System.String.Empty.

Exceptions:
System.ArgumentNullException:
value is null.

Parameters:
separator:
The string to use as a separator. separator is included in the returned string
only if value has more than one element.
value:
An array that contains the elements to concatenate.
startIndex:
The first element in value to use.
count:
The number of elements of value to use.

Exceptions:
A string that consists of the strings in value delimited by the separator
string. -or-System.String.Empty if count is zero, value has no elements,
or separator and all the elements of value are System.String.Empty.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentOutOfRangeException:
startIndex or count is less than 0.-or- startIndex plus count is greater
than the number of elements in value.
System.OutOfMemoryException:
Out of memory.

Parameters:
value:
The Unicode character to seek.

Exceptions:
The zero-based index position of value if that character is found, or -1
if it is not.

Parameters:
value:
The string to seek.

Exceptions:
The zero-based starting index position of value if that string is found,
or -1 if it is not. If value is System.String.Empty, the return value is
the last index position in this instance.

Exceptions:
System.ArgumentNullException:
value is null.

Parameters:
value:
The Unicode character to seek.
startIndex:
The starting position of the search. The search proceeds from startIndex
toward the beginning of this instance.

Exceptions:
The zero-based index position of value if that character is found, or -1
if it is not found or if the current instance equals System.String.Empty.

Exceptions:
System.ArgumentOutOfRangeException:
The current instance does not equal System.String.Empty, and startIndex is
less than zero or greater than or equal to the length of this instance.

Parameters:
value:
The string to seek.
startIndex:
The search starting position. The search proceeds from startIndex toward
the beginning of this instance.

Exceptions:
The zero-based starting index position of value if that string is found,
or -1 if it is not found or if the current instance equals System.String.Empty.
If value is System.String.Empty, the return value is the smaller of startIndex
and the last index position in this instance.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentOutOfRangeException:
The current instance does not equal System.String.Empty, and startIndex is
less than zero or greater than the length of the current instance. -or-The
current instance equals System.String.Empty, and startIndex is less than
-1 or greater than zero.

Parameters:
value:
The string to seek.
comparisonType:
One of the enumeration values that specifies the rules for the search.

Exceptions:
The zero-based starting index position of the value parameter if that string
is found, or -1 if it is not. If value is System.String.Empty, the return
value is the last index position in this instance.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentException:
comparisonType is not a valid System.StringComparison value.

Parameters:
value:
The Unicode character to seek.
startIndex:
The starting position of the search. The search proceeds from startIndex
toward the beginning of this instance.
count:
The number of character positions to examine.

Exceptions:
The zero-based index position of value if that character is found, or -1
if it is not found or if the current instance equals System.String.Empty.

Exceptions:
System.ArgumentOutOfRangeException:
The current instance does not equal System.String.Empty, and startIndex is
less than zero or greater than or equal to the length of this instance.-or-The
current instance does not equal System.String.Empty, and startIndex - count
+ 1 is less than zero.

Parameters:
value:
The string to seek.
startIndex:
The search starting position. The search proceeds from startIndex toward
the beginning of this instance.
count:
The number of character positions to examine.

Exceptions:
The zero-based starting index position of value if that string is found,
or -1 if it is not found or if the current instance equals System.String.Empty.
If value is System.String.Empty, the return value is the smaller of startIndex
and the last index position in this instance.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentOutOfRangeException:
count is negative.-or-The current instance does not equal System.String.Empty,
and startIndex is negative.-or- The current instance does not equal System.String.Empty,
and startIndex is greater than the length of this instance.-or-The current
instance does not equal System.String.Empty, and startIndex - count + 1 specifies
a position that is not within this instance. -or-The current instance equals
System.String.Empty and start is less than -1 or greater than zero. -or-The
current instance equals System.String.Empty and count is greater than 1.

Parameters:
value:
The string to seek.
startIndex:
The search starting position. The search proceeds from startIndex toward
the beginning of this instance.
comparisonType:
One of the enumeration values that specifies the rules for the search.

Exceptions:
The zero-based starting index position of the value parameter if that string
is found, or -1 if it is not found or if the current instance equals System.String.Empty.
If value is System.String.Empty, the return value is the smaller of startIndex
and the last index position in this instance.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentOutOfRangeException:
The current instance does not equal System.String.Empty, and startIndex is
less than zero or greater than the length of the current instance. -or-The
current instance equals System.String.Empty, and startIndex is less than
-1 or greater than zero.
System.ArgumentException:
comparisonType is not a valid System.StringComparison value.

Parameters:
value:
The string to seek.
startIndex:
The search starting position. The search proceeds from startIndex toward
the beginning of this instance.
count:
The number of character positions to examine.
comparisonType:
One of the enumeration values that specifies the rules for the search.

Exceptions:
The zero-based starting index position of the value parameter if that string
is found, or -1 if it is not found or if the current instance equals System.String.Empty.
If value is System.String.Empty, the return value is the smaller of startIndex
and the last index position in this instance.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentOutOfRangeException:
count is negative.-or-The current instance does not equal System.String.Empty,
and startIndex is negative.-or- The current instance does not equal System.String.Empty,
and startIndex is greater than the length of this instance.-or-The current
instance does not equal System.String.Empty, and startIndex + 1 - count specifies
a position that is not within this instance. -or-The current instance equals
System.String.Empty and start is less than -1 or greater than zero. -or-The
current instance equals System.String.Empty and count is greater than 1.
System.ArgumentException:
comparisonType is not a valid System.StringComparison value.

Parameters:
anyOf:
A Unicode character array containing one or more characters to seek.

Exceptions:
The index position of the last occurrence in this instance where any character
in anyOf was found; -1 if no character in anyOf was found.

Exceptions:
System.ArgumentNullException:
anyOf is null.

Parameters:
anyOf:
A Unicode character array containing one or more characters to seek.
startIndex:
The search starting position. The search proceeds from startIndex toward
the beginning of this instance.

Exceptions:
The index position of the last occurrence in this instance where any character
in anyOf was found; -1 if no character in anyOf was found or if the current
instance equals System.String.Empty.

Exceptions:
System.ArgumentNullException:
anyOf is null.
System.ArgumentOutOfRangeException:
The current instance does not equal System.String.Empty, and startIndex specifies
a position that is not within this instance.

Parameters:
anyOf:
A Unicode character array containing one or more characters to seek.
startIndex:
The search starting position. The search proceeds from startIndex toward
the beginning of this instance.
count:
The number of character positions to examine.

Exceptions:
The index position of the last occurrence in this instance where any character
in anyOf was found; -1 if no character in anyOf was found or if the current
instance equals System.String.Empty.

Exceptions:
System.ArgumentNullException:
anyOf is null.
System.ArgumentOutOfRangeException:
The current instance does not equal System.String.Empty, and count or startIndex
is negative.-or- The current instance does not equal System.String.Empty,
and startIndex minus count + 1 is less than zero.

Exceptions:
A new, normalized string whose textual value is the same as this string,
but whose binary representation is in normalization form C.

Exceptions:
System.ArgumentException:
The current instance contains invalid Unicode characters.

Parameters:
normalizationForm:
A Unicode normalization form.

Exceptions:
A new string whose textual value is the same as this string, but whose binary
representation is in the normalization form specified by the normalizationForm
parameter.

Exceptions:
System.ArgumentException:
The current instance contains invalid Unicode characters.

Parameters:
totalWidth:
The number of characters in the resulting string, equal to the number of
original characters plus any additional padding characters.

Exceptions:
A new string that is equivalent to this instance, but right-aligned and padded
on the left with as many spaces as needed to create a length of totalWidth.
However, if totalWidth is less than the length of this instance, the method
returns a reference to the existing instance. If totalWidth is equal to the
length of this instance, the method returns a new string that is identical
to this instance.

Exceptions:
System.ArgumentOutOfRangeException:
totalWidth is less than zero.

Parameters:
totalWidth:
The number of characters in the resulting string, equal to the number of
original characters plus any additional padding characters.
paddingChar:
A Unicode padding character.

Exceptions:
A new string that is equivalent to this instance, but right-aligned and padded
on the left with as many paddingChar characters as needed to create a length
of totalWidth. However, if totalWidth is less than the length of this instance,
the method returns a reference to the existing instance. If totalWidth is
equal to the length of this instance, the method returns a new string that
is identical to this instance.

Exceptions:
System.ArgumentOutOfRangeException:
totalWidth is less than zero.

Parameters:
totalWidth:
The number of characters in the resulting string, equal to the number of
original characters plus any additional padding characters.

Exceptions:
A new string that is equivalent to this instance, but left-aligned and padded
on the right with as many spaces as needed to create a length of totalWidth.
However, if totalWidth is less than the length of this instance, the method
returns a reference to the existing instance. If totalWidth is equal to the
length of this instance, the method returns a new string that is identical
to this instance.

Exceptions:
System.ArgumentOutOfRangeException:
totalWidth is less than zero.

Parameters:
totalWidth:
The number of characters in the resulting string, equal to the number of
original characters plus any additional padding characters.
paddingChar:
A Unicode padding character.

Exceptions:
A new string that is equivalent to this instance, but left-aligned and padded
on the right with as many paddingChar characters as needed to create a length
of totalWidth. However, if totalWidth is less than the length of this instance,
the method returns a reference to the existing instance. If totalWidth is
equal to the length of this instance, the method returns a new string that
is identical to this instance.

Exceptions:
System.ArgumentOutOfRangeException:
totalWidth is less than zero.

Parameters:
startIndex:
The zero-based position to begin deleting characters.

Exceptions:
A new string that is equivalent to this string except for the removed characters.

Exceptions:
System.ArgumentOutOfRangeException:
startIndex is less than zero.-or- startIndex specifies a position that is
not within this string.

Parameters:
startIndex:
The zero-based position to begin deleting characters.
count:
The number of characters to delete.

Exceptions:
A new string that is equivalent to this instance except for the removed characters.

Exceptions:
System.ArgumentOutOfRangeException:
Either startIndex or count is less than zero.-or- startIndex plus count specify
a position outside this instance.

Parameters:
oldChar:
The Unicode character to be replaced.
newChar:
The Unicode character to replace all occurrences of oldChar.

Exceptions:
A string that is equivalent to this instance except that all instances of
oldChar are replaced with newChar. If oldChar is not found in the current
instance, the method returns the current instance unchanged.

Parameters:
oldValue:
The string to be replaced.
newValue:
The string to replace all occurrences of oldValue.

Exceptions:
A string that is equivalent to the current string except that all instances
of oldValue are replaced with newValue. If oldValue is not found in the current
instance, the method returns the current instance unchanged.

Exceptions:
System.ArgumentNullException:
oldValue is null.
System.ArgumentException:
oldValue is the empty string ("").

Parameters:
separator:
A character array that delimits the substrings in this string, an empty array
that contains no delimiters, or null.

Exceptions:
An array whose elements contain the substrings from this instance that are
delimited by one or more characters in separator. For more information, see
the Remarks section.

Parameters:
separator:
A character array that delimits the substrings in this string, an empty array
that contains no delimiters, or null.
count:
The maximum number of substrings to return.

Exceptions:
An array whose elements contain the substrings in this instance that are
delimited by one or more characters in separator. For more information, see
the Remarks section.

Exceptions:
System.ArgumentOutOfRangeException:
count is negative.

Parameters:
separator:
A character array that delimits the substrings in this string, an empty array
that contains no delimiters, or null.
options:
System.StringSplitOptions.RemoveEmptyEntries to omit empty array elements
from the array returned; or System.StringSplitOptions.None to include empty
array elements in the array returned.

Exceptions:
An array whose elements contain the substrings in this string that are delimited
by one or more characters in separator. For more information, see the Remarks
section.

Exceptions:
System.ArgumentException:
options is not one of the System.StringSplitOptions values.

Parameters:
separator:
A string array that delimits the substrings in this string, an empty array
that contains no delimiters, or null.
options:
System.StringSplitOptions.RemoveEmptyEntries to omit empty array elements
from the array returned; or System.StringSplitOptions.None to include empty
array elements in the array returned.

Exceptions:
An array whose elements contain the substrings in this string that are delimited
by one or more strings in separator. For more information, see the Remarks
section.

Exceptions:
System.ArgumentException:
options is not one of the System.StringSplitOptions values.

Parameters:
separator:
A character array that delimits the substrings in this string, an empty array
that contains no delimiters, or null.
count:
The maximum number of substrings to return.
options:
System.StringSplitOptions.RemoveEmptyEntries to omit empty array elements
from the array returned; or System.StringSplitOptions.None to include empty
array elements in the array returned.

Exceptions:
An array whose elements contain the substrings in this string that are delimited
by one or more characters in separator. For more information, see the Remarks
section.

Exceptions:
System.ArgumentOutOfRangeException:
count is negative.
System.ArgumentException:
options is not one of the System.StringSplitOptions values.

Parameters:
separator:
A string array that delimits the substrings in this string, an empty array
that contains no delimiters, or null.
count:
The maximum number of substrings to return.
options:
System.StringSplitOptions.RemoveEmptyEntries to omit empty array elements
from the array returned; or System.StringSplitOptions.None to include empty
array elements in the array returned.

Exceptions:
An array whose elements contain the substrings in this string that are delimited
by one or more strings in separator. For more information, see the Remarks
section.

Exceptions:
System.ArgumentOutOfRangeException:
count is negative.
System.ArgumentException:
options is not one of the System.StringSplitOptions values.

Parameters:
value:
The string to compare.

Exceptions:
true if value matches the beginning of this string; otherwise, false.

Exceptions:
System.ArgumentNullException:
value is null.

Parameters:
value:
The string to compare.
comparisonType:
One of the enumeration values that determines how this string and value are
compared.

Exceptions:
true if this instance begins with value; otherwise, false.

Exceptions:
System.ArgumentNullException:
value is null.
System.ArgumentException:
comparisonType is not a System.StringComparison value.

Parameters:
value:
The string to compare.
ignoreCase:
true to ignore case during the comparison; otherwise, false.
culture:
Cultural information that determines how this string and value are compared.
If culture is null, the current culture is used.

Exceptions:
true if the value parameter matches the beginning of this string; otherwise,
false.

Exceptions:
System.ArgumentNullException:
value is null.

Parameters:
startIndex:
The zero-based starting character position of a substring in this instance.

Exceptions:
A string that is equivalent to the substring that begins at startIndex in
this instance, or System.String.Empty if startIndex is equal to the length
of this instance.

Exceptions:
System.ArgumentOutOfRangeException:
startIndex is less than zero or greater than the length of this instance.

Parameters:
startIndex:
The zero-based starting character position of a substring in this instance.
length:
The number of characters in the substring.

Exceptions:
A string that is equivalent to the substring of length length that begins
at startIndex in this instance, or System.String.Empty if startIndex is equal
to the length of this instance and length is zero.

Exceptions:
System.ArgumentOutOfRangeException:
startIndex plus length indicates a position not within this instance.-or-
startIndex or length is less than zero.

Exceptions:
A Unicode character array whose elements are the individual characters of
this instance. If this instance is an empty string, the returned array is
empty and has a zero length.

Parameters:
startIndex:
The starting position of a substring in this instance.
length:
The length of the substring in this instance.

Exceptions:
A Unicode character array whose elements are the length number of characters
in this instance starting from character position startIndex.

Exceptions:
System.ArgumentOutOfRangeException:
startIndex or length is less than zero.-or- startIndex plus length is greater
than the length of this instance.

Exceptions:
A string in lowercase.

Parameters:
culture:
An object that supplies culture-specific casing rules.

Exceptions:
The lowercase equivalent of the current string.

Exceptions:
System.ArgumentNullException:
culture is null.

Exceptions:
The lowercase equivalent of the current string.

Exceptions:
The current string.

Parameters:
provider:
(Reserved) An object that supplies culture-specific formatting information.

Exceptions:
The current string.

Exceptions:
The uppercase equivalent of the current string.

Parameters:
culture:
An object that supplies culture-specific casing rules.

Exceptions:
The uppercase equivalent of the current string.

Exceptions:
System.ArgumentNullException:
culture is null.

Exceptions:
The uppercase equivalent of the current string.

Exceptions:
The string that remains after all white-space characters are removed from
the start and end of the current string. If no characters can be trimmed
from the current instance, the method returns the current instance unchanged.

Parameters:
trimChars:
An array of Unicode characters to remove, or null.

Exceptions:
The string that remains after all occurrences of the characters in the trimChars
parameter are removed from the start and end of the current string. If trimChars
is null or an empty array, white-space characters are removed instead. If
no characters can be trimmed from the current instance, the method returns
the current instance unchanged.

Parameters:
trimChars:
An array of Unicode characters to remove, or null.

Exceptions:
The string that remains after all occurrences of the characters in the trimChars
parameter are removed from the end of the current string. If trimChars is
null or an empty array, Unicode white-space characters are removed instead.
If no characters can be trimmed from the current instance, the method returns
the current instance unchanged.

Parameters:
trimChars:
An array of Unicode characters to remove, or null.

Exceptions:
The string that remains after all occurrences of characters in the trimChars
parameter are removed from the start of the current string. If trimChars
is null or an empty array, white-space characters are removed instead.