private void ReadFileCB(IAsyncResult ar)
{
ReadFileStateInfo state = ar.AsyncState as ReadFileStateInfo;
if (state == null)
{
return;
}
FileStream fs = state.ReadFileStream;
int count = fs.EndRead(ar);
if (count > 0)
{
state.ResultStream.Write(state.ReadBuffer, 0, count);
fs.BeginRead(state.ReadBuffer, 0, BUFFER_SIZE, new AsyncCallback(ReadFileCB), state);
}
else
{
if (fs != null)
{
fs.Close();
fs = null;
}
state.EndProcessCB(ar);
}
}
public void EndProcessRequest(IAsyncResult result)
{
ReadFileStateInfo state = result.AsyncState as ReadFileStateInfo;
if (state == null)
{
return;
}
state.Context.Response.ContentType = "image/*";
state.Context.Response.BinaryWrite(state.ResultStream.ToArray());
state.ResultStream.Close();
}