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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 = { (char)13 }; char[] trimParam = { (char)10 };//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].TrimStart(trimParam); } //lines = lines.Where(l => l.Trim() != "").ToArray(); } 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 += 25;//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"); }
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