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I've created a web-part. I've added few documents to it. I'm implementing download functionality. I want file download dialog. My code is like this.

DownloadItem(SPListItem item)
{
   // Get physical path of the file
   string itemPath = MapPathSecure(item.File.Url);

   HttpContext.Current.Response.ContentType = "application/x-download";
   HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment; filename=" + item.File.Name);            
   HttpContext.Current.Response.TransmitFile(itemPath);
   HttpContext.Current.Response.End();
}

This throws an error : "Could not find a part of the path 'Path to the document'. The path does not exist. I know that Sharepoint documents are not located on the hard disk. Am I missing something here ?

How do I get this code to work ?

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1 Answer 1

up vote 0 down vote accepted

I slightly modified the code like this and it worked :)

byte[] data = item.File.OpenBinary();           
HttpContext.Current.Response.ContentType = "application/x-download";
HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment; filename=" + item.File.Name);
HttpContext.Current.Response.BinaryWrite(data);
HttpContext.Current.Response.End();

Thanks alot for this user Upload/Delete/Download from Document Library

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Any idea how to do a page post back after file down load. I have a similar WP documents showing up in a SPGridView. On a LinkButton click i download the document. Only the first download works. So i was thinking to do a page post back afterwards. How to do that ? –  Shaamil Aug 28 at 14:43

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