window打印程序

        private void 打印ＰToolStripMenuItem_Click(object sender, EventArgs e)
        {
            printDialog1.Document = printDocument1;
            lineReader = new StringReader(textBox1.Text);
            if (printDialog1.ShowDialog()==DialogResult.OK)
            {
                try
                {
                    printDocument1.Print();
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                    printDocument1.PrintController.OnEndPrint(printDocument1, new PrintEventArgs());
                }
            }
            printDialog1.ShowDialog();
        }

        private void 打印预览ＶToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //printPreviewDialog1可以自己创建一个如下：
            //PrintPreviewDialog printPreviewDialog = new PrintPreviewDialog();
            printPreviewDialog1.Document = printDocument1;
            lineReader = new StringReader(textBox1.Text);
            try
            {
                printPreviewDialog1.ShowDialog();
            }
            catch (Exception excep)
            {
                MessageBox.Show(excep.Message, "打印出错", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

 

最关键的处理类

 

  private void printDocument1_PrintPage(object sender, 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
            SolidBrush myBrush = new SolidBrush(Color.Black);//刷子
            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
            }
        }
    }