本方法适用于有打印驱动的打印机打印。直接用电脑默认打印机进行打印文字和图片。
首先安装打印机驱动,然后在设备和打印机中将要用的打印机设为默认打印机,然后调用该方法即可
Pulic Void Print()
{
PrintService ps = new PrintService();
ps.StartPrint("33333","txt");//打印文字
ps.StartPrint(Image.FromFile(Application.StartupPath+"\\2.jpeg"), "image");//打印图片
}
PrintService类源码
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Printing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace 系统打印demo
{
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 string streamType;
private string streamtxt;
private Image streamima;
// This method will set properties on the PrintDialog object and
// then display the dialog.
public void StartPrint(string txt, string streamType)
{
this.streamType = streamType;
this.streamtxt = txt;
// 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
DialogResult result = PrintDialog1.ShowDialog();//调用PrintDialog的ShowDialog函数显示打印对话框,如果不要注释即可,直接调用docToPrint.Print()
// If the result is OK then print the document.
if (result == DialogResult.OK)
{
docToPrint.Print();//开始打印
}
}
public void StartPrint(Image ima, string streamType)
{
this.streamType = streamType;
this.streamima = ima;
// 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
DialogResult result = PrintDialog1.ShowDialog();//调用PrintDialog的ShowDialog函数显示打印对话框,如果不要注释即可,直接调用docToPrint.Print()
// If the result is OK then print the document.
if (result == DialogResult.OK)
{
docToPrint.Print();//开始打印
}
}
// The PrintDialog will print the document
// by handling the document's PrintPage event.
private void docToPrint_PrintPage(object sender,
System.Drawing.Printing.PrintPageEventArgs e)//设置打印机开始打印的事件处理函数
{
// Insert code to render the page here.
// This code will be called when the control is drawn.
// The following code will render a simple
// message on the printed document
switch (this.streamType)
{
case "txt":
string text = null;
System.Drawing.Font printFont = new System.Drawing.Font
("Arial", 35, System.Drawing.FontStyle.Regular);
// Draw the content.
text = streamtxt;
e.Graphics.DrawString(text, printFont, System.Drawing.Brushes.Black, e.MarginBounds.X, e.MarginBounds.Y);
break;
case "image":
System.Drawing.Image image = streamima;
int x = e.MarginBounds.X;
int y = e.MarginBounds.Y;
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(x, y, width, height);
e.Graphics.DrawImage(image, destRect, 0, 0, image.Width, image.Height, System.Drawing.GraphicsUnit.Pixel);
break;
default:
break;
}
}
}
}