WPF打印之三 打印预览

这个示例演示了如何进行一个最简单的打印预览工作，为此需要引入两个dll:System.Windows.Forms,System.Drawing  

 　/// <summary>
    /// 预览类
    /// </summary>
    public class PrintService
    {       

　　　//实例化打印预览
        System.Windows.Forms.PrintPreviewDialog ppd = new System.Windows.Forms.PrintPreviewDialog();
        /// <summary>
        /// 预览类
        /// </summary>
        public PrintService()
        {     

　　　　 //打印文档
            System.Drawing.Printing.PrintDocument docToPrint =
                             new System.Drawing.Printing.PrintDocument();//创建一个PrintDocument的实例 
            docToPrint.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(docToPrint_PrintPage);

            //打印预览的打印文档设置为被打印文档
            ppd.Document = docToPrint;
            ppd.ShowDialog();
        }

 

        //设置打印机开始打印的事件处理函数
        private void docToPrint_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            e.Graphics.DrawString("Hello, world!", new System.Drawing.Font("Arial", 16, System.Drawing.FontStyle.Regular), System.Drawing.Brushes.Black, 100, 100);
        }

    }