Updated: October 2010
When overridden in a derived class, retrieves the next character in the fallback buffer.
Assembly: mscorlib (in mscorlib.dll)
An encoding operation calls the Fallback method if the operation encounters an unknown character or surrogate pair in the input. For example, in the case of a replacement fallback, if the Fallback method returns true, a substitute string exists that can be encoded instead of the unknown input. The encoding operation calls the method repeatedly and obtains the substitute string one character at a time. When all characters in the fallback buffer have been returned to the encoder, the method should return U+0000.
For an exception fallback handler, the method should return U+0000.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.