.net打印控件基本用法
1、在winform上加如下控件
2、代码和用法如下:
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace Winform { /* 在 Windows 窗体中进行打印主要包括以下两个方面:使用 PrintDocument 组件(Windows 窗体)组件来使用户可以打印;使用 PrintPreviewDialog 控件(Windows 窗体)控件、 PrintDialog 组件(Windows 窗体)组件和 PageSetupDialog 组件(Windows 窗体)组件向了解 Windows 操作系统的用户提供熟悉的图形界面 * printdocument使用方法:1、创建;2、在printpage事件中写每一页的打印逻辑;3、调用print方法 * printPreviewControl用法:1、创建;2、将document属性和printdocument关联;3、在printdocument的printpage事件里写打印逻辑;4、运行程序后会自动调用printpage事件;5、如果要刷新就用InvalidatePreview函数 */ public partial class UsageOfControl6 : Form { string documentContents;//总打印字符 string stringToPrint;///要打印的 public UsageOfControl6() { InitializeComponent(); ///考虑printPreviewControl组件在初始化时就调用了printdocument的printpage事件,在这里初始化打印数据 using (FileStream stream = new FileStream(@"d:\redist.txt", FileMode.Open)) using (StreamReader reader = new StreamReader(stream)) { documentContents = reader.ReadToEnd(); } stringToPrint = documentContents; } private void UsageOfControl6_Load(object sender, EventArgs e) { } private void button1_Click(object sender, EventArgs e) { printPreviewDialog1.Document = printDocument1;//打印预览控件 printDialog1.Document = printDocument1;//打印设置控件 pageSetupDialog1.Document=printDocument1;//页面设置控件 printPreviewControl1.Document = printDocument1; using (FileStream stream = new FileStream(@"d:\redist.txt", FileMode.Open)) using (StreamReader reader = new StreamReader(stream)) { documentContents = reader.ReadToEnd(); } stringToPrint = documentContents; if (printDialog1.ShowDialog()==DialogResult.OK)///通过printDialog1来设置printdocument1的属性:打印机,打印页数,打印方向 { pageSetupDialog1.ShowDialog();///打印纸设置,边距,页眉,纸大小,也可以在printDocument1_PrintPage事件中获取e.PageSettings来设置 this.printPreviewDialog1.ShowDialog();///打印预览 printDocument1.Print(); printPreviewControl1.InvalidatePreview();////刷新,会再次调用printdocument的printpage事件 } } private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e) { int charactersOnPage = 0; int linesPerPage = 0; // Sets the value of charactersOnPage to the number of characters // of stringToPrint that will fit within the bounds of the page. //算出stringToPrint铺满打印页时的打印行数和字符数 e.Graphics.MeasureString(stringToPrint, this.Font, e.MarginBounds.Size, StringFormat.GenericTypographic, out charactersOnPage, out linesPerPage); // Draws the string within the bounds of the page.///打印本页文字 ///除了打印文字还可以打印线条,图形,屏幕截图等,可以在批定的位置打 e.Graphics.DrawString(stringToPrint, this.Font, Brushes.Black, e.MarginBounds, StringFormat.GenericTypographic); // Remove the portion of the string that has been printed. stringToPrint = stringToPrint.Substring(charactersOnPage);//下一页要打的 // Check to see if more pages are to be printed. e.HasMorePages = (stringToPrint.Length > 0);///如果没有打印完就打印下一页,会自动调用这个事件来打印下一页 // If there are no more pages, reset the string to be printed. if (!e.HasMorePages) stringToPrint = documentContents; } private void button2_Click(object sender, EventArgs e) { printPreviewControl1.StartPage += 1;///下一页 } private void button3_Click(object sender, EventArgs e) { printPreviewControl1.StartPage -= 1;///上一页 } private void button4_Click(object sender, EventArgs e) { printPreviewControl1.Zoom += 0.1;///放大 } private void button5_Click(object sender, EventArgs e) { printPreviewControl1.Zoom -= 0.1;//缩小 } } }
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