SqlConnection con = new SqlConnection(@"Data Source=jolla;Initial Catalog=Logdb;user id=sa;password=jolla;Integrated Security=True");
            if (txt1.Text != "")
            {
                con.Open();
                SqlCommand cmd = new SqlCommand("update dbo.Imgtable1 Set Username='" + Nuser.Text + "', Email='" + Nemail1.Text + "', Mobile='" + Nmobile1.Text + "', Image='" + name+ "' where Username='" + txt1.Text + "' or Email='" + txt1.Text + "'", con);
                cmd.ExecuteNonQuery();
                cmd.Dispose();
                Clear();
            }
            else
            {
                Response.Write("Text Field Empty");
                txt1.Focus();
            }
    }