Assembly: mscorlib (in mscorlib.dll)
The EncoderFallback object represents an error handler that is invoked when a character cannot be converted into an encoded byte sequence. Any one of the following handler types is supported:
A best-fit fallback handler, which replaces characters that cannot be encoded with some suitable replacement character.
A replacement fallback handler, which replaces characters that cannot be encoded with some arbitrary replacement character. The .NET Framework includes one replacement fallback handler, EncoderFallback, which by default replaces characters that cannot be encoded with a question mark ("?") character.
An exception fallback handler, which throws an exception when characters cannot be encoded. The .NET Framework includes one exception fallback handler, EncoderExceptionFallback, which throws an EncoderFallbackException when characters cannot be decoded.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.