Parameters
- str
 - The string instance
 - startIndex
 - The zero-based index position of the insertion.
 - value
 - The string to insert.
 
Return Value
A new string that is equivalent to this instance, but with value inserted at position startIndex.Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family