Help Creating A Custom Export Type Via IRenderingExtension

Hello all, I am developing my own custom export type via the IRenderingExtension interface, and I am having a fundamental problem getting it to work.

I followed this guide written by James Yip, http://forums.microsoft.com/TechNet/AddPost.aspx?ForumID=82&SiteID=17, and managed to compile my SampleRenderer class and properly configure SRSS so that my 'Sample' export format is now available in the export dropdown in Report Manager.


However, upon actually exporting a report, the result is a blank file. I have absolutely no idea why the stream I create isn't getting through to the final file.

Here is my render method:




Code Block
public bool Render(Microsoft.ReportingServices.ReportRendering.Report report, System.Collections.Specialized.NameValueCollection reportServerParameters, System.Collections.Specialized.NameValueCollection deviceInfo, System.Collections.Specialized.NameValueCollection clientCapabilities, EvaluateHeaderFooterExpressions evaluateHeaderFooterExpressions, CreateAndRegisterStream createAndRegisterStream)
{

System.IO.Stream stream = null;
System.IO.StreamWriter streamWriter = null;



try
{

stream = createAndRegisterStream("users", "txt",System.Text.Encoding.ASCII, "text/plain", false, StreamOper.CreateAndRegister);

streamWriter = new System.IO.StreamWriter(stream);
streamWriter.WriteLine("Hello???");
}
finally
{

if (streamWriter != null)
{

//streamWriter.Close();
//closing the stream here results in an exception
}
if (stream != null)
{

//stream.Close();
}
}

return false;
}






Any ideas on what I am doing wrong here?

Thanks,
Dan