c#打印怎么做？

Answer 1

步骤如下：

创建一个PrintDialog的实例。如下：
System.Windows.Forms.PrintDialog PrintDialog1=new PrintDialog ();
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();
}
using System;
using System.Drawing.Printing;
using System.Windows.Forms;
using System.IO;

namespace EDImageSystem
{
/// <summary>
/// PrintService 的摘要说明。
/// </summary>
public class PrintService
{
public PrintService()
{
//
// TODO: 在此处添加构造函数逻辑
//
this.docToPrint.PrintPage+=new PrintPageEventHandler(docToPrint_PrintPage);
}//将事件处理函数添加到PrintDocument的PrintPage中

// Declare the PrintDocument object.
private System.Drawing.Printing.PrintDocument docToPrint =
new System.Drawing.Printing.PrintDocument();//创建一个PrintDocument的实例

private System.IO.Stream streamToPrint;
string streamType;

// This method will set properties on the PrintDialog object and
// then display the dialog.
public void StartPrint(Stream streamToPrint,string streamType)
{

this.streamToPrint=streamToPrint;
this.streamType=streamType;
// Allow the user to choose the page range he or she would
// like to print.
System.Windows.Forms.PrintDialog PrintDialog1=new PrintDialog ();//创建一个PrintDialog的实例。
PrintDialog1.AllowSomePages = true;

// Show the help button.
PrintDialog1.ShowHelp = true;

// Set the Document property to the PrintDocument for
// which the PrintPage Event has been handled. To display the
// dialog, either this property or the PrinterSettings property
// must be set
PrintDialog1.Document = docToPrint;//把PrintDialog的Document属性设为上面配置好的PrintDocument的实例