winform（c#）中实现打印机相关功能

 在实现我的打印功能时主要用到 Graphics 、PrintDialog、 PageSetupDialog 、PrintPreviewDialog、 StringReader 、ShowDialog

*下面代码主要涉及到的功能有:打印设置、页面设置、打印预览、打印

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Printing;
using System.IO;
namespace dayin
{
 /// <summary>
 /// Form1 的摘要说明。
 /// </summary>
 public class Form1 : System.Windows.Forms.Form
 {
  /// <summary>
  /// 必需的设计器变量。
  /// </summary>
  private System.ComponentModel.Container components = null;

  public Form1()
  {
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();

   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //
  }

  /// <summary>
  /// 清理所有正在使用的资源。
  /// </summary>
  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }

  private System.Windows.Forms.Button FileMenuItem_PrintSet;
  private System.Windows.Forms.TextBox textBox;
  private System.Windows.Forms.Button FileMenuItem_PageSet;
  private System.Windows.Forms.Button FileMenuItem_PrintView;
  private System.Windows.Forms.Button FileMenuItem_Print;

  #region Windows 窗体设计器生成的代码
  /// <summary>
  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  /// </summary>
  ///
  PrintDocument printDocument;
  StringReader lineReader;
  private void InitializeComponent()
  {
   this.printDocument = new System.Drawing.Printing.PrintDocument();
   this.FileMenuItem_PrintSet = new System.Windows.Forms.Button();
   this.textBox = new System.Windows.Forms.TextBox();
   this.FileMenuItem_PageSet = new System.Windows.Forms.Button();
   this.FileMenuItem_PrintView = new System.Windows.Forms.Button();
   this.FileMenuItem_Print = new System.Windows.Forms.Button();
   this.SuspendLayout();
   //
   // printDocument
   //
   this.printDocument.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(this.printDocument_PrintPage);
   //
   // FileMenuItem_PrintSet
   //
   this.FileMenuItem_PrintSet.Location = new System.Drawing.Point(0, 0);
   this.FileMenuItem_PrintSet.Name = "FileMenuItem_PrintSet";
   this.FileMenuItem_PrintSet.TabIndex = 0;
   this.FileMenuItem_PrintSet.Text = "打印设置";
   this.FileMenuItem_PrintSet.Click += new System.EventHandler(this.FileMenuItem_PrintSet_Click);
   //
   // textBox
   //
   this.textBox.Location = new System.Drawing.Point(24, 72);
   this.textBox.Multiline = true;
   this.textBox.Name = "textBox";
   this.textBox.Size = new System.Drawing.Size(240, 184);
   this.textBox.TabIndex = 1;
   this.textBox.Text = "dfgfdghfthfgdhhgdfgf";
   //
   // FileMenuItem_PageSet
   //
   this.FileMenuItem_PageSet.Location = new System.Drawing.Point(88, 0);
   this.FileMenuItem_PageSet.Name = "FileMenuItem_PageSet";
   this.FileMenuItem_PageSet.TabIndex = 2;
   this.FileMenuItem_PageSet.Text = "页面设置";
   this.FileMenuItem_PageSet.Click += new System.EventHandler(this.FileMenuItem_PageSet_Click);
   //
   // FileMenuItem_PrintView
   //
   this.FileMenuItem_PrintView.Location = new System.Drawing.Point(176, 0);
   this.FileMenuItem_PrintView.Name = "FileMenuItem_PrintView";
   this.FileMenuItem_PrintView.TabIndex = 3;
   this.FileMenuItem_PrintView.Text = "打印预览";
   this.FileMenuItem_PrintView.Click += new System.EventHandler(this.FileMenuItem_PrintView_Click);
   //
   // FileMenuItem_Print
   //
   this.FileMenuItem_Print.Location = new System.Drawing.Point(88, 48);
   this.FileMenuItem_Print.Name = "FileMenuItem_Print";
   this.FileMenuItem_Print.TabIndex = 4;
   this.FileMenuItem_Print.Text = "打印";
   this.FileMenuItem_Print.Click += new System.EventHandler(this.FileMenuItem_Print_Click);
   //
   // Form1
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(312, 325);
   this.Controls.Add(this.FileMenuItem_Print);
   this.Controls.Add(this.FileMenuItem_PrintView);
   this.Controls.Add(this.FileMenuItem_PageSet);
   this.Controls.Add(this.textBox);
   this.Controls.Add(this.FileMenuItem_PrintSet);
   this.Name = "Form1";
   this.ResumeLayout(false);

  }
  #endregion

  /// <summary>
  /// 应用程序的主入口点。
  /// </summary>
  [STAThread]
  static void Main()
  {
   Application.Run(new Form1());  --”Form1“可以换成自己的
  }
  private void printDocument_PrintPage(object sender,PrintPageEventArgs e)
  {
   Graphics g = e.Graphics;
   float linesPerPage=0;
   float yPosition=0;
   int Count = 0;
   float LeftMargin=e.MarginBounds.Left;
   float TopMargin = e.MarginBounds.Top;
   string line = null;
   Font printFont = this.textBox.Font;
   SolidBrush MyBrush = new SolidBrush(Color.Black);
   linesPerPage = e.MarginBounds.Height;
   while(Count < linesPerPage && ((line=lineReader.ReadLine()) != null))
   {
    yPosition = TopMargin + (Count * printFont.GetHeight(g));
    g.DrawString(line, printFont, MyBrush, LeftMargin, yPosition, new StringFormat());
    Count++;
   }
   if(line!=null)
   {
    e.HasMorePages=true;
   }
   else
   {
    e.HasMorePages=false;
   }
  }

  private void FileMenuItem_PrintSet_Click(object sender, System.EventArgs e)
  {
   PrintDialog dlgPrint = new PrintDialog();
   dlgPrint.Document=printDocument;
   dlgPrint.ShowDialog();
  }

  private void FileMenuItem_PageSet_Click(object sender, System.EventArgs e)
  {
   PageSetupDialog pageupSetupDialog = new PageSetupDialog();
   pageupSetupDialog.Document=printDocument;
   pageupSetupDialog.ShowDialog();
  }

  private void FileMenuItem_PrintView_Click(object sender, System.EventArgs e)
  {
   PrintPreviewDialog dlgPreviewPrint = new PrintPreviewDialog();
   dlgPreviewPrint.Document=printDocument;
   lineReader = new StringReader(textBox.Text);
   
   try
   {
    dlgPreviewPrint.ShowDialog();
   }
   catch
   {
    MessageBox.Show(" 打印出错 ");
   }
  }

  private void FileMenuItem_Print_Click(object sender, System.EventArgs e)
  {                                        
   PrintDialog dlgPrint= new PrintDialog();
   dlgPrint.Document=printDocument;
   lineReader = new StringReader(textBox.Text);
   if(dlgPrint.ShowDialog()==DialogResult.OK)
   {
    try
    {
     printDocument.Print();
    }
    catch
    {
     MessageBox.Show(" 打印出错 ");
    }
   }
  }

 }
}