XML/XSLT Word Report Generator

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WordReportGenerator
{
    public partial class SqlExecutor : Form
    {
        private WRGEngine engine;
        
        public SqlExecutor(ref Object value){
            InitializeComponent();
            engine = (WRGEngine)value;
            this.Load += new EventHandler(SqlExecutor_Load);
        }

        void SqlExecutor_Load(object sender, EventArgs e){
            this.sql_box.Text = engine.sql;
            this.xml_box.Text = String.Empty;
            this.xsd_box.Text = engine.xsd;
        }

        private void update(){
            this.sql_box.Text = engine.sql;
            this.xml_box.Text = engine.xml;
            this.xsd_box.Text = engine.xsd;
            engine.pg.Refresh();
        }

        private void btn_xml_click(object sender, EventArgs e){
            save();
            engine.xml = (string)WRG.dal.ExecuteScalar(engine.sql);
            update();
        }

        private void btn_xsd_click(object sender, EventArgs e){
            save();
            engine.GetXsd();
            update();
        }

        private void btn_save_click(object sender, EventArgs e){
            save();
            this.DialogResult = DialogResult.OK;
            this.Close();
        }

        private void btn_cancel_click(object sender, EventArgs e)
        {
            this.DialogResult = DialogResult.Cancel;
            this.Close();
        }

        private void save(){
            engine.sql = this.sql_box.Text;
            engine.xml = this.xml_box.Text;
            engine.xsd = this.xsd_box.Text;
        }
    }
}