|   | StringExtensionsIndexOfPrevious(String, String, Int32, Boolean) Method | 
        
        
            Searches a string from right to left for the next instance of a specified string.
            
        
        Namespace: GSFAssembly: GSF.Core (in GSF.Core.dll) Version: 2.4.257-beta+00aa2366fbb9ec75f636ebc7cfa610e3826a727c
 Syntax
Syntaxpublic static int IndexOfPrevious(
	this string value,
	string testString,
	int startIndex = 0,
	bool matchCase = true
)
[<ExtensionAttribute>]
static member IndexOfPrevious : 
        value : string * 
        testString : string * 
        ?startIndex : int * 
        ?matchCase : bool 
(* Defaults:
        let _startIndex = defaultArg startIndex 0
        let _matchCase = defaultArg matchCase true
*)
-> int GSF.StringExtensions.IndexOfPrevious = function(value, testString, startIndex, matchCase);
Parameters
- value  String
- Input string to process.
- testString  String
- The string to find.
- startIndex  Int32  (Optional)
- The index in value from which to begin looking for testString. Typically length of value minus 1."
- matchCase  Boolean  (Optional)
- Set to false for case insensitive search
Return Value
Int32The start (or left most) index of 
testString within 
value or (-1) if not found.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type 
String. When you use instance method syntax to call this method, omit the first parameter. For more information, see 
Extension Methods (Visual Basic) or 
Extension Methods (C# Programming Guide).
 See Also
See Also