C#使用PrintDocument打印 多页 打印预览
PrintDocument实例所有的订阅事件如下:
- 创建一个PrintDocument的实例.如下: System.Drawing.Printing.PrintDocument docToPrint =
new System.Drawing.Printing.PrintDocument(); - 设置打印机开始打印的事件处理函数.函数原形如下: void docToPrint_PrintPage(object sender,
System.Drawing.Printing.PrintPageEventArgs e) - 将事件处理函数添加到PrintDocument的PrintPage事件中。 docToPrint.PrintPage+=new PrintPageEventHandler(docToPrint_PrintPage);
- 设置PrintDocument的相关属性,如: PrintDialog1.AllowSomePages = true;PrintDialog1.ShowHelp = true;
- 把PrintDialog的Document属性设为上面配置好的PrintDocument的实例: PrintDialog1.Document = docToPrint;
- 调用PrintDialog的ShowDialog函数显示打印对话框: DialogResult result = PrintDialog1.ShowDialog();
- 根据用户的选择,开始打印: if (result==DialogResult.OK) { docToPrint.Print(); }
- 打印预览控件PrintPreviewDialog
- PrintPreviewControl 在窗体中添加打印预览
例子如下:
使用时先创建PrintService类的实例,然后调用void StartPrint(Stream streamToPrint,string streamType)函数开始打印。其中streamToPrint是要打印的内容(字节流),streamType是流的类型(txt表示普通文本,image表示图像);
- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Text;
- using System.IO;
- using System.Drawing.Printing;
- using System.Windows.Forms;
- using System.Drawing;
- namespace ConsoleApplication1
- {
- public partial class PrintTxt:Form
- {
- private PrintPreviewDialog PrintPreview = new PrintPreviewDialog();
- private string StreamType;
- private Image image = null;
- private Stream StreamToPrint = null;
- Font mainFont = new Font("宋体", 12);//打印的字体
- public string Filename =null;
- //1、实例化打印文档
- PrintDocument pdDocument = new PrintDocument();
- private string[] lines;
- private PrintPreviewControl printPreviewControl1;
- public PrintTxt()
- {
- InitializeComponent();
- }
- private int linesPrinted;
- public PrintTxt(string filepath,string filetype):this()
- {
- Filename = Path.GetFileNameWithoutExtension(filepath);
- //订阅BeginPrint事件
- pdDocument.BeginPrint += new PrintEventHandler(pdDocument_BeginPrint);
- //訂閱EndPrint事件,释放资源
- pdDocument.PrintPage += new PrintPageEventHandler(OnPrintPage);
- //订阅Print打印事件,该方法必须放在订阅打印事件的最后
- FileStream fs = new FileStream(filepath, FileMode.Open, FileAccess.Read);
- StartPrint(fs, filetype);
- //打印结束
- pdDocument.EndPrint += new PrintEventHandler(pdDocument_EndPrint);
- }
- //2、启动Print打印方法
- public void StartPrint(Stream streamToPrint, string streamType)
- {
- //声明返回值的PageSettings A4/A5
- PageSettings ps = new PageSettings();
- //显示设置打印页对话框
- PageSetupDialog Psdl = new PageSetupDialog();
- //打印多页设置
- PrintDialog pt = new PrintDialog();
- pt.AllowCurrentPage = true;
- pt.AllowSomePages = true;
- pt.AllowPrintToFile = true;
- printPreviewControl1.Document = pdDocument;//form中的打印预览
- printPreviewControl1.Zoom = 1.0;
- printPreviewControl1.Dock = DockStyle.Fill;
- printPreviewControl1.UseAntiAlias = true;
- StreamToPrint = streamToPrint;//打印的字节流
- StreamType = streamType; //打印的类型
- pdDocument.DocumentName = Filename; //打印的文件名
- Psdl.Document = pdDocument;
- PrintPreview.Document = pdDocument;
- PrintPreview.SetDesktopLocation(300, 800);
- Psdl.PageSettings = pdDocument.DefaultPageSettings;
- pt.Document = pdDocument;
- try
- {
- //显示对话框
- if (Psdl.ShowDialog() == DialogResult.OK)
- {
- ps = Psdl.PageSettings;
- pdDocument.DefaultPageSettings = Psdl.PageSettings;
- }
- if (pt.ShowDialog() == DialogResult.OK)
- {
- pdDocument.PrinterSettings.Copies = pt.PrinterSettings.Copies;
- }
- if (PrintPreview.ShowDialog() == DialogResult.OK)
- //调用打印
- pdDocument.Print();
- // PrintDocument对象的Print()方法在PrintController类中执行PrintPage事件。
- //
- }
- catch (InvalidPrinterException ex)
- {
- MessageBox.Show(ex.Message, "Simple Editor", MessageBoxButtons.OK, MessageBoxIcon.Error);
- throw;
- }
- }
- /// <summary>
- /// 3、得到打印內容
- /// 每个打印任务只调用OnBeginPrint()一次。
- /// </summary>
- /// <param name="sender"></param>
- /// <param name="e"></param>
- void pdDocument_BeginPrint(object sender, PrintEventArgs e)
- {
- char[] param = { '/n' };
- char[] trimParam = { '/r' };//回车
- switch (StreamType)
- {
- case "txt":
- StringBuilder text = new StringBuilder();
- System.IO.StreamReader streamReader = new StreamReader(StreamToPrint, Encoding.Default);
- while (streamReader.Peek() >= 0)
- {
- lines = streamReader.ReadToEnd().Split(param);
- for (int i = 0; i < lines.Length; i++)
- {
- lines[i] = lines[i].TrimEnd(trimParam);
- }
- }
- break;
- case "image":
- image = System.Drawing.Image.FromStream(StreamToPrint);
- break;
- default:
- break;
- }
- }
- /// <summary>
- /// 4、绘制多个打印界面
- /// printDocument的PrintPage事件
- /// </summary>
- /// <param name="sender"></param>
- /// <param name="e"></param>
- private void OnPrintPage(object sender, PrintPageEventArgs e)
- {
- int leftMargin = Convert.ToInt32((e.MarginBounds.Left) * 3 / 4); //左边距
- int topMargin = Convert.ToInt32(e.MarginBounds.Top * 2 / 3); //顶边距
- switch (StreamType)
- {
- case "txt":
- while (linesPrinted < lines.Length)
- {
- //向画布中填写内容
- e.Graphics.DrawString(lines[linesPrinted++], new Font("Arial", 10), Brushes.Black, leftMargin, topMargin, new StringFormat());
- topMargin += 55;//行高为55,可调整
- //走纸换页
- if (topMargin >= e.PageBounds.Height - 60)//页面累加的高度大于页面高度。根据自己需要,可以适当调整
- {
- //如果大于设定的高
- e.HasMorePages = true;
- printPreviewControl1.Rows += 1;//窗体的打印预览窗口页面自动加1
- /*
- * PrintPageEventArgs类的HaeMorePages属性为True时,通知控件器,必须再次調用OnPrintPage()方法,打印一个页面。
- * PrintLoopI()有一个用於每个要打印的页面的序例。如果HasMorePages是False,PrintLoop()就会停止。
- */
- return;
- }
- }
- break;
- case "image"://一下涉及剪切图片,
- int width = image.Width;
- int height = image.Height;
- if ((width / e.MarginBounds.Width) > (height / e.MarginBounds.Height))
- {
- width = e.MarginBounds.Width;
- height = image.Height * e.MarginBounds.Width / image.Width;
- }
- else
- {
- height = e.MarginBounds.Height;
- width = image.Width * e.MarginBounds.Height / image.Height;
- }
- System.Drawing.Rectangle destRect = new System.Drawing.Rectangle(topMargin, leftMargin, width, height);
- //向画布写入图片
- for (int i = 0; i < Convert.ToInt32(Math.Floor((double)image.Height/ 820)) + 1; i++)
- {
- e.Graphics.DrawImage(image, destRect, i*820,i*1170 , image.Width, image.Height, System.Drawing.GraphicsUnit.Pixel);
- //走纸换页
- if (i * 1170 >= e.PageBounds.Height - 60)//页面累加的高度大于页面高度。根据自己需要,可以适当调整
- {
- //如果大于设定的高
- e.HasMorePages = true;
- printPreviewControl1.Rows += 1;//窗体的打印预览窗口页面自动加1
- /*
- * PrintPageEventArgs类的HaeMorePages属性为True时,通知控件器,必须再次調用OnPrintPage()方法,打印一个页面。
- * PrintLoopI()有一个用於每个要打印的页面的序例。如果HasMorePages是False,PrintLoop()就会停止。
- */
- return;
- }
- }
- break;
- }
- //打印完毕后,画线条,且注明打印日期
- e.Graphics.DrawLine(new Pen(Color.Black), leftMargin, topMargin, e.MarginBounds.Right, topMargin);
- string strdatetime = DateTime.Now.ToLongDateString() + DateTime.Now.ToLongTimeString();
- e.Graphics.DrawString(string.Format("打印时间:{0}", strdatetime), mainFont, Brushes.Black, e.MarginBounds.Right-240, topMargin+40, new StringFormat());
- linesPrinted = 0;
- //绘制完成后,关闭多页打印功能
- e.HasMorePages = false;
- }
- /// <summary>
- ///5、EndPrint事件,释放资源
- /// </summary>
- /// <param name="sender"></param>
- /// <param name="e"></param>
- void pdDocument_EndPrint(object sender, PrintEventArgs e)
- {
- //变量Lines占用和引用的字符串数组,现在释放
- lines = null;
- }
- private void InitializeComponent()
- {
- this.printPreviewControl1 = new System.Windows.Forms.PrintPreviewControl();
- this.SuspendLayout();
- //
- // printPreviewControl1
- //
- this.printPreviewControl1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
- | System.Windows.Forms.AnchorStyles.Left)
- | System.Windows.Forms.AnchorStyles.Right)));
- this.printPreviewControl1.Location = new System.Drawing.Point(12, 3);
- this.printPreviewControl1.Name = "printPreviewControl1";
- this.printPreviewControl1.Size = new System.Drawing.Size(685, 511);
- this.printPreviewControl1.TabIndex = 0;
- //
- // PrintTxt
- //
- this.ClientSize = new System.Drawing.Size(696, 526);
- this.Controls.Add(this.printPreviewControl1);
- this.Name = "PrintTxt";
- this.ResumeLayout(false);
- }
- }
- //PrintTxt simple = new PrintTxt("D://Mainsoft//12.txt", "txt");
- }
调用方式 PrintTxt simple = new PrintTxt("D://Mainsoft//12.txt", "txt");
验证通过;
来自:http://blog.csdn.net/tsapi/article/details/6237695