I need file download code in c#

Sir,
I need file download code in c#.
Uploaded file are stored in db how can I download specific file

I use this code in asp.net with c# code, file downloaded but first file only download others are not download

Byte[] bytes = (Byte[])dt.Rows[0]["Content"];
        Response.Buffer = true;
        Response.Charset = "";
        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        Response.AddHeader("content-disposition", "attachment;filename="+ dt.Rows[0]["FileName"].ToString());
        Response.BinaryWrite(bytes);
        Response.Flush();
        Response.End();

Regard
sekar.c

Regards
Sekar.c