Sets the length of a stream to a specified value.
Assembly: mscorlib (in mscorlib.dll)
An I/O error has occurred.
The stream is closed.
The underlying memory does not support writing.
- or -
An attempt is made to write to the stream and the CanWrite property is false.
The specified value exceeds the capacity of the stream.
- or -
The specified value is negative.
If the given value is less than the current length of the stream, the stream is truncated. If the given value is larger than the current length of the stream, the stream is expanded. If the stream is expanded, the contents of the stream between the old and the new lengths are undefined.
A stream must support both writing and seeking for to work.