Code snippet in ASP.NET/C# to prompt browser ‘Save as’ for known MIME types.

Response.Clear();
Response.ContentType = “application/x-unknown”;
string fileName = “file.jpg”;
string filePath = “d:\\” + fileName;
Response.AddHeader(“Content-Disposition”,”attachment; filename=” + fileName );
FileStream fs = File.OpenRead(filePath);
BinaryReader br = new BinaryReader(fs);
Response.BinaryWrite(br.ReadBytes(Convert.ToInt32(fs.Length)));
Response.End();