|   | StringExtensionsIndexOfPreviousNot(String, FuncChar, Boolean, Int32) Method | 
        
        
            Searches a string from right to left for the next instance of a character that does not pass the given delegate function.
            
        
        Namespace: GSFAssembly: GSF.Core (in GSF.Core.dll) Version: 2.4.257-beta+00aa2366fbb9ec75f636ebc7cfa610e3826a727c
 Syntax
SyntaxGSF.StringExtensions.IndexOfPreviousNot = function(value, characterTestFunction, startIndex);
Parameters
- value  String
- Input string to process.
- characterTestFunction  FuncChar, Boolean
- The character test to use.
- startIndex  Int32  (Optional)
- The index in value from which to begin testing characters. Typically length of value minus 1."
Return Value
Int32The index of the character 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