I need to produce my own DecoderFallback and DecoderFallbackBuffer classes to implement some custom stream decoding.
I have found that the stream reader making use of it is calling GetNextChar() repeatedly even when my specilizaed DecoderFallbackBuffer.Remaining property returns 0 to indicate that there no more characters to return.
The end result is that the stream reader gets into an infinite loop.
Why is this happening?
The solution is to make one's GetNextChar() return (char)0 when the Remaining property is 0. This is definately not clear in the MSDN documentation.
I suspect that, internally, readers are doing something like
while (theChar = dfb.GetNextChar() <> 0){}
instead of
while (dfb.Remaining > 0){ theChar = dfb.GetNextChar(); }
Anyways, seems to work fine. Just wanted to contribute this clarification of using this .NET class to SO.