打印编程

开发平台：
Visual C++

Form1.cs：源码内容
							﻿using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace xiaopiaodayin
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        string strconn = "Data Source=(local);Initial Catalog=thedatabase;User ID=sa";
        DataSet ds;
        SqlDataAdapter da;
        private void button1_Click(object sender, EventArgs e)
        {
            this.printDocument1.Print();
            //this.printPreviewDialog1.Document = this.printDocument1;
            //printPreviewDialog1.Show();
        }
        
        private void xiaopiao_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            e.Graphics.DrawString("爱因森08软件技术4班", new Font("宋体", 12, FontStyle.Regular), Brushes.Black, 25, 10);
            e.Graphics.DrawString("超市销售小票", new Font("宋体", 12, FontStyle.Regular), Brushes.Black, 55, 30);
            e.Graphics.DrawLine(new Pen(Brushes.Black,2), 25, 55, 200, 55);
            int i=0;
            int  sum = 0;
            foreach(DataRow dr in ds.Tables["Goods"].Rows)            
            {
                e.Graphics.DrawString(dr[1].ToString(), new Font("宋体", 10, FontStyle.Regular), Brushes.Black, 25, 70+i*20);
                e.Graphics.DrawString(dr[2].ToString(), new Font("宋体", 10, FontStyle.Regular), Brushes.Black, 150, 70+i*20);
                int  a=Convert.ToInt32(dr[2]);
                sum = sum + a;
                i++;
            }
            string sumstr = Convert.ToString(sum)+"元";
            e.Graphics.DrawLine(new Pen(Brushes.Black, 2), 25, 70 + i * 20, 200, 70 + i * 20);
            e.Graphics.DrawString("总价：", new Font("宋体", 10, FontStyle.Regular), Brushes.Black, 25, 80 + i * 20);
            e.Graphics.DrawString(sumstr, new Font("宋体", 10, FontStyle.Regular), Brushes.Black, 140, 80 + i * 20);
            
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            SqlConnection conn = new SqlConnection(strconn);
            conn.Open();
            string sql = "select * from Goods";
            SqlCommand cmd = new SqlCommand();
            cmd.Connection = conn;
            cmd.CommandType = CommandType.Text;
            cmd.CommandText = sql;
            da = new SqlDataAdapter(cmd);
            ds = new DataSet();
            da.Fill(ds, "Goods");
            conn.Close();
            this.dataGridView1.DataSource=ds.Tables["Goods"];
        }
        private void button2_Click(object sender, EventArgs e)
        {
            SqlCommandBuilder cb = new SqlCommandBuilder(da);
            da.Update(ds, "Goods");
        }
    }
}

						