Question

We have an ASP.NET/C# 2.0 (.NET 2.0) web application.

To make the client to download a byte array programmatically we have a piece of code which looks like this:

Response.ContentType = contentType ?? "application/octet-stream";
Response.AddHeader("Content-Disposition", "attachment; filename=" + filename);    

Stream iStream = ...
byte[] buffer = new Byte[10000];

while (dataToRead > 0)
{
  // Verify that the client is connected.
  if (response.IsClientConnected)
  {
    // Read the data in buffer.
    length = iStream.Read(buffer, 0, 10000);

    // Write the data to the current output stream.
    response.OutputStream.Write(buffer, 0, length);

    // Flush the data to the HTML output.
    response.Flush();

    //buffer= new Byte[10000];
    dataToRead = dataToRead - length;
  }
  else
  {
    //prevent infinite loop if user disconnects
    dataToRead = -1;
  }
}

Response.Flush();
Response.Close();

This works on all our installations but one (on IIS 6) where I got files truncated (about 30KB). Did you ever experience such a problem?

Answer 1

The problem was related to a module. We solved with Response.End() to prevent the execution of the module.