CODEWITHSUNDEEP
c#asp.net
user857521
user857521

Reputation:

Unable to create link to download file from server

I'm attempting to provide a link to download a zip file on an asp.net webpage but just can't get it working.

Can anyone spot what I'm doing wrong?

I have the following link

<a href="#" runat="server" ID="lnkDownload" 
Text="Download Zip" onServerClick="DownloadFile">Download TestFile</a>

and codebehind,

protected void DownloadFile(object sender, EventArgs eventArgs)
{
    string DownloadPath = "/Members/Download/TestFile.zip";
    //string DownloadPath = "~/Members/Download/TestFile.zip";
    Response.ContentType = "application/octet-stream";
    Response.AddHeader("Content-Disposition", 
          "attachment; filename=\"" + "TestFile.zip" + "\"");
    Response.Clear();
    Response.WriteFile(DownloadPath);
    Response.End();
}

The code runs when the link is clicked but nothing downloads and I then get an error on Response.End(); which is

A first chance exception of type 'System.Threading.ThreadAbortException' occurred in mscorlib.dll

Upvotes: 1

Views: 323

Answers (1)

Irfan TahirKheli
Irfan TahirKheli

Reputation: 3662

Try this code:

Response.AddHeader("Content-Disposition", "attachment; filename=" + DownloadPath);
Response.ContentType = "application/octet-stream";
Response.TransmitFile(DownloadPath);
Response.Flush();

--- Updated code

var fileInfo = new System.IO.FileInfo(DownloadPath);

            if (fileInfo.Exists)
            {
                Response.Clear();
 Response.ContentType = "application/octet-stream";
                Response.BufferOutput = true;
                Response.AddHeader("Content-Disposition", "attachment; filename=" + fileInfo.Name);
                Response.AddHeader("Content-Length", fileInfo.Length.ToString());

                Response.TransmitFile(fileInfo.FullName);
                Response.Flush();


            }
            else
            {
                throw new Exception("File not found");
            }

Upvotes: 1

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