file downloading in sharepoint

Question

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 ?

Answer 1

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