How to download file from a link control?

string filename="myResume.doc";if (filename != "")
{
string path = Server.MapPath(filename);
System.IO.FileInfo file = new System.IO.FileInfo(path);
if (file.Exists)
{
Response.Clear();
Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);
Response.AddHeader("Content-Length", file.Length.ToString()); Response.ContentType = "application/octet-stream"; Response.WriteFile(file.FullName);
Response.End();
}

else
{
Response.Write("This file does not exist.");
}}