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StringLastIndexOf Method (String, Int32)
Reports the zero-based index position of the last occurrence of a specified string within this instance. The search starts at a specified character position.

Namespace: System
Assembly: mscorlib (in mscorlib.dll) Version: 4.0.0.0
Syntax
C#
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public int LastIndexOf(
	string value,
	int startIndex
)

Parameters

value
Type: SystemString
The string to seek.
startIndex
Type: SystemInt32
The search starting position. The search proceeds from startIndex toward the beginning of this instance.

Return Value

Type: Int32
The zero-based index position of value if that string is found, or -1 if it is not found or if the current instance equals Empty. If value is Empty, the return value is the smaller of startIndex and the last index position in this instance.
Exceptions
ExceptionCondition
ArgumentNullExceptionvalue is null.
ArgumentOutOfRangeExceptionThe current instance does not equal Empty, and startIndex is less than zero or greater than the length of the current instance.-or-The current instance equals Empty and startIndex is greater than zero.
See Also