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C#实现基础打印功能
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Drawing.Printing;
namespace 打印
{
public partial class Form1 : Form
{
private StringReader lineReader;
private Font printFont = new Font("Arial", 10);
private SolidBrush myBrush = new SolidBrush(Color.Black);//刷子
public Form1()
{
lineReader = null;
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
Graphics g = e.Graphics; //获得绘图对象
float linesPerPage = 0; //页面的行号
float yPosition = 0; //绘制字符串的纵向位置
int count = 0; //行计数器
float leftMargin = e.MarginBounds.Left; //左边距
float topMargin = e.MarginBounds.Top; //上边距
string line = null; //行字符串
Font printFont = this.textBox1.Font;//当前的打印字体
linesPerPage = e.MarginBounds.Height / printFont.GetHeight(g);//每页可打印的行数
//逐行的循环打印一页
while (count < linesPerPage && ((line = lineReader.ReadLine()) != null))
{
yPosition = topMargin (count * printFont.GetHeight(g));
g.DrawString(line, printFont, myBrush, leftMargin, yPosition, new StringFormat());
count ;
}
// 注意:使用本段代码前,要在该窗体的类中定义lineReader对象:
//StringReader lineReader = null;
//如果本页打印完成而line不为空,说明还有没完成的页面,这将触发下一次的打印事件。在下一次的打印中lineReader会
//自动读取上次没有打印完的内容,因为lineReader是这个打印方法外的类的成员,它可以记录当前读取的位置
if (line != null)
e.HasMorePages = true;
else
{
e.HasMorePages = false;
// 重新初始化lineReader对象,不然使用打印预览中的打印按钮打印出来是空白页
lineReader = new StringReader(textBox1.Text); // textBox是你要打印的文本框的内容
}
}
private void printSetToolStripMenuItem_Click(object sender, EventArgs e)
{
printDialog1.Document = printDocument1;
printDialog1.ShowDialog();
}
private void 打印预览ToolStripMenuItem_Click(object sender, EventArgs e)
{
lineReader = new StringReader(textBox1.Text);
try
{
printPreviewDialog1.ShowDialog();
}
catch (Exception excep)
{
MessageBox.Show(excep.Message, "打印出错", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void 打印ToolStripMenuItem_Click(object sender, EventArgs e)
{
lineReader = new StringReader(textBox1.Text);
if (printDialog1.ShowDialog() == DialogResult.OK)
{
try
{
printDocument1.Print();
}
catch (Exception excep)
{
MessageBox.Show(excep.Message, "打印出错", MessageBoxButtons.OK, MessageBoxIcon.Error);
printDocument1.PrintController.OnEndPrint(printDocument1, new PrintEventArgs());
}
}
}
private void printDocument1_BeginPrint(object sender, PrintEventArgs e)
{
printFont = textBox1.Font;//打印使用的字体
lineReader = new StringReader(textBox1.Text);//TextBox1.Text
}
private void printDocument1_EndPrint(object sender, PrintEventArgs e)
{
if (lineReader != null)
lineReader.Close();//释放不用的资源
}
}
}