Question

Below is the code for download a file. My url works(able to download) however my url2 didn’t work(unable to download). What is the error that i did for url2? any problems with my relative path?

protected void Button1_Click(object sender, EventArgs e)
{
    string url =@"C:\Users\Roy\Desktop\backup fyp\10-18-2011\WebSite5\123.txt";
    string url2 = @"~\123.txt";
    FileInfo finfo = new FileInfo(url);

    if (finfo.Exists)
    {
        Response.Clear();
        Response.AddHeader("Content-Disposition", "attachment; filename=" + finfo.Name);
        Response.AddHeader("Content-Length", finfo.Length.ToString());
        Response.ContentType = "application/octet-stream";
        Response.Flush();
        Response.WriteFile(finfo.FullName);
    }
    else
    {
        Response.Write("error");
    }
}

Answer 1

~\123.txt is a virtual path. You need to use it like this:

string url2 = HttpContext.Current.Server.MapPath(@"~\123.txt");