LastIndexOf Method (String, 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.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Function LastIndexOf ( _
value As String, _
startIndex As Integer _
) As Integer
public int LastIndexOf(
string value,
int startIndex
)
public:
int LastIndexOf(
String^ value,
int startIndex
)
member LastIndexOf :
value:string *
startIndex:int -> int
public function LastIndexOf(
value : String,
startIndex : int
) : int
Parameters
- value
Type: System. . :: . .String
The string to seek.
- startIndex
Type: System. . :: . .Int32
The search starting position. The search proceeds from startIndex toward the beginning of this instance.
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 String..::..Empty, the return value is the smaller of startIndex and the last index position in this instance.
Remarks
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 the first character position has been examined. For example, if startIndex is Length - 1, the method searches every character from the last character in the string to the beginning.
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see dd66cd4c-b087-415f-9c3e-94e3a1835f74.