Fire Insert and Update Stored procedure from One Button Click

protected void btnSubmit_Click(object sender, EventArgs e)
        {
        try
        {
            con2.Open();
            cmd = new SqlCommand("USP_INSERT_STUDENT_NOTICE",con2);
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.Parameters.AddWithValue("@NOTICEDISPLAY_DATE", txtnoticedate.Text);
            cmd.Parameters.AddWithValue("@NOTICE_TITLE", txtnoticetitle.Text);
            cmd.Parameters.AddWithValue("@NOTICE_BODY", txtnoticebody.Text);
            int rows = cmd.ExecuteNonQuery();
            if (rows>0)
            {
                Response.Write("<script>alert('Data Inserted Succesfully');</script>");
                GridView1.DataBind();
                Response.Redirect("~/Admin/AddStudentNotice.aspx");
              //  
                

                con2.Close();
                
            }
        }