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  • C#教程之C#打印类PrintDocument、PrintDialog、PrintPrev

1.使用PrintDocument进行打印

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using System;
using System.Drawing;
using System.Drawing.Printing;
using System.Windows.Forms;
 
namespace PrintTest
{
  public partial class Form1 : Form
  {
    public Form1()
    {
      InitializeComponent();
    }
 
    private void button1_Click(object sender, EventArgs e)
    {
      //实例化打印对象
      PrintDocument printDocument1 = new PrintDocument();
      //设置打印用的纸张,当设置为Custom的时候，可以自定义纸张的大小
      printDocument1.DefaultPageSettings.PaperSize = new PaperSize("Custum", 500, 500);
      //注册PrintPage事件，打印每一页时会触发该事件
      printDocument1.PrintPage += new PrintPageEventHandler(this.PrintDocument_PrintPage);
      //开始打印
      printDocument1.Print();
    }
    private void PrintDocument_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
    {
      //设置打印内容及其字体，颜色和位置
      e.Graphics.DrawString("Hello World！", new Font(new FontFamily("黑体"), 24), System.Drawing.Brushes.Red, 50, 50);
    }
  }
}

2.使用PrintDialog增加打印对话框

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using System;
using System.Drawing;
using System.Drawing.Printing;
using System.Windows.Forms;
 
namespace PrintTest
{
  public partial class Form1 : Form
  {
    public Form1()
    {
      InitializeComponent();
    }
 
    private void button1_Click(object sender, EventArgs e)
    {
      //实例化打印对象
      PrintDocument printDocument1 = new PrintDocument();
      //设置打印用的纸张,当设置为Custom的时候，可以自定义纸张的大小
      printDocument1.DefaultPageSettings.PaperSize = new PaperSize("Custum", 500, 500);
      //注册PrintPage事件，打印每一页时会触发该事件
      printDocument1.PrintPage += new PrintPageEventHandler(this.PrintDocument_PrintPage);
   
      //初始化打印对话框对象
      PrintDialog printDialog1 = new PrintDialog();
      //将PrintDialog.UseEXDialog属性设置为True，才可显示出打印对话框
      printDialog1.UseEXDialog = true;
      //将printDocument1对象赋值给打印对话框的Document属性
      printDialog1.Document = printDocument1;
      //打开打印对话框
      DialogResult result = printDialog1.ShowDialog();
      if (result == DialogResult.OK)        
        printDocument1.Print();//开始打印
    }
    private void PrintDocument_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
    {
      //设置打印内容及其字体，颜色和位置
      e.Graphics.DrawString("Hello World！", new Font(new FontFamily("黑体"), 24), System.Drawing.Brushes.Red, 50, 50);
    }
  }
}

打印对话框如下图所示。

3.使用PrintPreviewDialog增加打印预览对话框

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using System;
using System.Drawing;
using System.Drawing.Printing;
using System.Windows.Forms;
 
namespace PrintTest
{
  public partial class Form1 : Form
  {
    public Form1()
    {
      InitializeComponent();
    }
 
    private void button1_Click(object sender, EventArgs e)
    {
      //实例化打印对象
      PrintDocument printDocument1 = new PrintDocument();
      //设置打印用的纸张,当设置为Custom的时候，可以自定义纸张的大小
      printDocument1.DefaultPageSettings.PaperSize = new PaperSize("Custum", 500, 500);
      //注册PrintPage事件，打印每一页时会触发该事件
      printDocument1.PrintPage += new PrintPageEventHandler(this.PrintDocument_PrintPage);
   
      //初始化打印预览对话框对象
      PrintPreviewDialog printPreviewDialog1 = new PrintPreviewDialog();
      //将printDocument1对象赋值给打印预览对话框的Document属性
      printPreviewDialog1.Document = printDocument1;
      //打开打印预览对话框
      DialogResult result = printPreviewDialog1.ShowDialog();
      if (result == DialogResult.OK)        
        printDocument1.Print();//开始打印
    }
    private void PrintDocument_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
    {
      //设置打印内容及其字体，颜色和位置
      e.Graphics.DrawString("Hello World！", new Font(new FontFamily("黑体"), 24), System.Drawing.Brushes.Red, 50, 50);
    }
  }
}

打印时，会显示下图所示预览画面。

注意：PrintDialog与PrintPreviewDialog位于名称空间System.Windows.Forms（程序集为System.Windows.Forms.dll）中，而PrintDocument位于名称空间System.Drawing.Printing（程序集为System.Drawing.dll）中。


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