Download Files in ASP.Net

With the use of the following code you can give the user the ability to download files to any location on their computer.

To download a file I am creating a function that checks a file's type and downloads the file from their location. After clicking on the download button a save dialog box is used for saving the downloaded file.

This is the function:

private void DownloadFile(string fname, bool forceDownload)
    {
        string Filepath = fname;
        string Filename = Path.GetFileName(Filepath);
        string ext = Path.GetExtension(Filepath);
        string type = "";
        // set known types based on file extension 
        if (ext != null)
        {
            switch (ext.ToLower())
            {
                case ".htm":
                case ".html":
                    type = "text/HTML";
                    break;

                case ".txt":
                    type = "text/plain";
                    break;

                case ".doc":
                case ".docx":
                case ".rtf":
                    type = "Application/msword";
                    break;

                case ".wav":

                case  ".Mp3":
 
                    type = "Application/media";
                    break;
 
 
            }
        }
        if (forceDownload)
        {
            Response.AppendHeader("content-disposition",
                "attachment; filename=" + Filename);
        }
        if (type != "")
            Response.ContentType = type;
        Response.WriteFile(Filepath);
        Response.End();
    }
        if (forceDownload)
        {
            Response.AppendHeader("content-disposition",
                "attachment; filename=" + Filename);
        }
        if (type != "")
            Response.ContentType = Filetype;
        Response.WriteFile(Filepath);
        Response.End();
    }

To force a download you have to pass true there.

Filepath is showing the path of the file from where we are downloading a file.