I'm pretty new to DNN and working with Telerik controls, so I hope someone can help.

In short, I'm a .NET programmer who is currently developing modules for use within DotNetNuke. For the module I'm currently working on, I'm displaying data in a Telerik RadGrid. One of my columns contains a LinkButton which when it's clicked needs to run a function that retrieves a BLOB from my database and opens the pdf file.

I've got this working within a .NET test environment using a GridView. Here's the code for my OnClick event:

public void lnkWebFileName_Click(object sender, EventArgs e) 
{ 
   Label lblWebFileNameNew = (Label)((Control)sender).NamingContainer.FindControl 
   ("lblWebFileName"); 
   string webfilename = lblWebFileNameNew.Text.ToString(); 
   BlobRetrieval.WriteDocumentWithStreaming(webfilename); 
} 

I haven't included the code for WriteDocumentWithStreaming because in .NET this works like a charm, so I know my retrieval code works.

Trying to get this to work via my RadGrid, however, is another issue. For testing purposes, I use the following code to make sure I'm getting the webfilename value and then I change the button text:

public void lnkWebFileName_Click(object sender, EventArgs e) 
{ 
   Label lblWebFileNameNew = (Label)((Control)sender).NamingContainer.FindControl   
   ("lblWebFileName"); 
   LinkButton lnkBtn = (LinkButton)((Control)sender).NamingContainer.FindControl 
   ("lnkWebFileName"); 
   string webfilename = lblWebFileNameNew.Text.ToString(); 
   lnkBtn.Text = webfilename; 
} 

Works perfectly! The problem is when I add:

BlobRetrieval.WriteDocumentWithStreaming(webfilename); 

to try to display the pdf file, it does nothing. I checked DNN's EventViewer, and the only error message I get is:

System.Exception: Unhandled Error 

Does anybody have any idea what to do to retrieve and display a BLOB via a RadGrid? Do I have to do something special with my existing code, or is there something specific within RadGrid that needs to be done?

I don't know if this is a problem related to DNN or to Telerik.

Someone please help get rid of this headache. Thank you!

MKDnn