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打印、预览
int sub = 0;
private void printText(string text, System.Drawing.Printing.PrintPageEventArgs e)
{
//取得Graphics实例
Graphics g = e.Graphics;
//获得相关点坐标、长度、宽度
int x = e.PageSettings.Margins.Left;
int y = e.PageSettings.Margins.Right;
int width = e.PageSettings.PaperSize.Width - e.PageSettings.Margins.Left - e.PageSettings.Margins.Right;
int height = e.PageSettings.PaperSize.Height - e.PageSettings.Margins.Top - e.PageSettings.Margins.Bottom;
int charnum;
int line;
//设置字体
Font font = new Font("宋体",15);
//打印string
g.MeasureString(text.Substring(sub), font, new SizeF(width, height - 10), new StringFormat(), out charnum, out line);
//设置截取位置
g.DrawString(text.Substring(sub), font, Brushes.Black, new RectangleF(x, y, width, height), new StringFormat());
sub += charnum;
if (sub < this.textBox1.Text.Length)
{
e.HasMorePages = true;
}
else
{
e.HasMorePages = false;
sub = 0;
}
}
//打印预览
private void button1_Click(object sender, EventArgs e)
{
//注意指定其Document(获取或设置要预览的文档)属性
this.printPreviewDialog1.Document = this.printDocument1;
//ShowDialog方法：将窗体显示为模式对话框，并将当前活动窗口设置为它的所有者
this.printPreviewDialog1.ShowDialog();
}
//打印
private void button2_Click(object sender, EventArgs e)
{
//注意指定Document(获取或设置一个值)属性
this.printDialog1.Document = this.printDocument1;
//ShowDialog方法：用默认的所有者运行通用对话框
if (this.printDialog1.ShowDialog() == DialogResult.OK)
{ //DialogResult指定标识符以指定对话框的返回值
//触发PrintDocument的PrintPage事件
this.printDocument1.Print(); //Print方法：开始文档的打印进程
}
}
//printDocument1控件的PrintPage事件(双击printDocument1控件生成)
private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
printText(textBox1.Text, e); //打印文本
e.Graphics.DrawImage(pictureBox1.Image, 20, 20); //打印图片
}
// printDocument1控件：定义一个向打印机发送输出的对象；
// printDialog1控件：显示一个对话框，允许用户选择打印机并选择其他打印选项；
// printPreviewDialog1控件：显示一个对话框，向用户显示关联文档打印时的样子；
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