Replaces the existing character at the specified index position with another character.
Assembly: mscorlib (in mscorlib.dll)
This secure string has already been disposed.
This secure string is read-only.
index is less than zero, or greater than or equal to the length of this secure string.
An error occurred while encrypting or decrypting the value of this secure string.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.