Implement custom stream

Question

I am calling a dll that writes to a stream. The signature of the method in the dll looks like:

public bool SomeMethod(Stream stream);

and t

Answer 1

The easiest custom stream a stream that "wraps" some other stream (similar to compression streams). Each method would simply redirect its implementation to internal stream.

class MyStream : Stream
{
 Stream inner;
 public MyStream(Stream inner)
 {
  this.inner = inner;
 }

 public override int Read(byte[] buffer, int offset, int count) 
 { 
    var result = inner.Read(buffer, offset, count);

            /* HERE I COULD CALL A CUSTOM EVENT */ 
   return result;
 } 
///
}

Usage sample: functionThatTakesStream(new MyStream(new MemoryStream());.

Real code will need to handle exceptions in operations on inners stream before/after fireing events and deal with IDisposable correctly.