LastIndexOf Method (String, Int32, Int32)

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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 and proceeds backward toward the beginning of the string for a specified number of character positions.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

member LastIndexOf : 
        value:string * 
        startIndex:int * 
        count:int -> int 


Type: System..::..String
The string to seek.
Type: System..::..Int32
The search starting position. The search proceeds from startIndex toward the beginning of this instance.
Type: System..::..Int32
The number of character positions to examine.

Return Value

Type: System..::..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 String..::..Empty. If value is Empty, the return value is the smaller of startIndex and the last index position in this instance.

Index numbering starts from zero. That is, the first character in the string is at index zero and the last is at Length - 1.

The search begins at the startIndex character position of this instance and proceeds backward toward the beginning until either value is found or count character positions have been examined. For example, if startIndex is Length - 1, the method searches backward count characters from the last character in the string.