Retrive .mht file from database

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ASP.NET

MySQL

Sir,i have create a file in excel sheet and than convert into mht file and then save in mysql database.Now i want to retrive mht file from database on webpage...

my code..

protected void Button1_Click(object sender, EventArgs e)
        {
            MySqlConnection con = new MySqlConnection("Server=Localhost;DataBase=password1;user=root;password=nectar");
            string strcon = "select data from sla11 where idSLA11=2";
            MySqlCommand com = new MySqlCommand(strcon, con);
            con.Open();
           
            MySqlDataReader dr = com.ExecuteReader();
            if (dr.Read())
            {
                Response.ContentType = "text/mhtml";
                Response.AddHeader("Content-Disposition", "attachment;name=\"" + dr["data"] + "\"");
                Response.BinaryWrite((byte[])dr["data"]);

                Response.End();
            }
            else
            {
                ClientScript.RegisterStartupScript(Page.GetType(), "validation", "<script language='javascript'>alert('Report Not Exist')</script>");
            }
            con.Close();

it is not open webpage