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[Solved] Push file to user from grid

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Grid

This is a migrated thread and some comments may be shown as answers.

Antoine asked on 09 Apr 2008, 04:20 AM

Hi,

Using the grid ItemCommand I'm trying to "push" a file to the client by doing the following:

    
                        // FileInfo object creation 
        
                        System.IO.FileInfo targetFile = new System.IO.FileInfo(filePath); 
        
                        // clear the current output content from the buffer 
        
                        HttpContext.Current.Response.Clear(); 
        
                        // add the header that specifies the default filename for 
        
                        // the Download/SaveAs dialog 
        
                        HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=" + targetFile.Name); 
        
                        // add the header that specifies the file size, so that the browser 
        
                        // can show the download progress 
        
                        HttpContext.Current.Response.AddHeader("Content-Length", targetFile.Length.ToString()); 
        
                        // specify that the response is a stream that cannot be read by the 
        
                        // client and must be downloaded 
        
                        HttpContext.Current.Response.ContentType = GetFileType(targetFile.FullName.ToLower().Substring(targetFile.FullName.Length - 4)); 
        
                        // send the file stream to the client 
        
                        HttpContext.Current.Response.WriteFile(targetFile.FullName); 
        
                        // stop the execution of this page 
        
                        HttpContext.Current.Response.End();

This works fine outside the context of a Radgrid. Im a receiving this error:

    
            Error: [Exception... "'Sys.WebForms.PageRequestManagerParserErrorException: Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled. 
        
            Details: Error parsing near '%PDF-1.6 
        
            %ýýýý 
        
            9 0 '.' when calling method: [nsIOnReadyStateChangeHandler::handleEvent]"  nsresult: "0x8057001c (NS_ERROR_XPC_JS_THREW_JS_OBJECT)"  location: "<unknown>"  data: no]

It seems like it doesn't like that the response headers are modified to push the file to the client with a "save prompt", but this is working everywhere except from a radgrid?

Any clue?

[Solved] Push file to user from grid

2 Answers, 1 is accepted