/// 
        /// 打印的按钮        /// 
        ///         ///         private void btnPrint_Click(object sender, EventArgs e)        {            // printDocument1 为 打印控件            //设置打印用的纸张 当设置为Custom的时候，可以自定义纸张的大小，还可以选择A4,A5等常用纸型            this.printDocument1.DefaultPageSettings.PaperSize = new PaperSize("Custom",500,300);                       this.printDocument1.PrintPage += new PrintPageEventHandler(this.MyPrintDocument_PrintPage);            //将写好的格式给打印预览控件以便预览            printPreviewDialog1.Document = printDocument1;            //显示打印预览            DialogResult result = printPreviewDialog1.ShowDialog();        }        /// 
        /// 打印的格式        /// 
        ///         ///         private void MyPrintDocument_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)        {            /*如果需要改变自己 可以在new Font(new FontFamily("黑体"),11）中的“黑体”改成自己要的字体就行了，黑体 后面的数字代表字体的大小             System.Drawing.Brushes.Blue , 170, 10 中的 System.Drawing.Brushes.Blue 为颜色，后面的为输出的位置 */            e.Graphics.DrawString("新乡市三月软件公司入库单", new Font(new FontFamily("黑体"), 11), System.Drawing.Brushes.Black, 170, 10);            e.Graphics.DrawString("供货商:河南科技学院", new Font(new FontFamily("黑体"), 8), System.Drawing.Brushes.Blue, 10, 12);            //信息的名称            e.Graphics.DrawLine(Pens.Black, 8, 30, 480, 30);            e.Graphics.DrawString("入库单编号", new Font(new FontFamily("黑体"), 8), System.Drawing.Brushes.Black, 9, 35);            e.Graphics.DrawString("商品名称", new Font(new FontFamily("黑体"), 8), System.Drawing.Brushes.Black, 160, 35);            e.Graphics.DrawString("数量", new Font(new FontFamily("黑体"), 8), System.Drawing.Brushes.Black, 260, 35);            e.Graphics.DrawString("单价", new Font(new FontFamily("黑体"), 8), System.Drawing.Brushes.Black, 330, 35);            e.Graphics.DrawString("总金额", new Font(new FontFamily("黑体"), 8), System.Drawing.Brushes.Black, 400, 35);            e.Graphics.DrawLine(Pens.Black, 8, 50, 480, 50);            //产品信息            e.Graphics.DrawString("R2011-01-2016:06:35", new Font(new FontFamily("黑体"), 8), System.Drawing.Brushes.Black, 9, 55);            e.Graphics.DrawString("联想A460", new Font(new FontFamily("黑体"), 8), System.Drawing.Brushes.Black, 160, 55);            e.Graphics.DrawString("100", new Font(new FontFamily("黑体"), 8), System.Drawing.Brushes.Black, 260, 55);            e.Graphics.DrawString("200.00", new Font(new FontFamily("黑体"), 8), System.Drawing.Brushes.Black, 330, 55);            e.Graphics.DrawString("20000.00", new Font(new FontFamily("黑体"), 8), System.Drawing.Brushes.Black, 400, 55);            e.Graphics.DrawLine(Pens.Black, 8, 200, 480, 200);            e.Graphics.DrawString("地址：新乡市河南科技学院信息工程学院", new Font(new FontFamily("黑体"), 8), System.Drawing.Brushes.Black, 9, 210);            e.Graphics.DrawString("经办人:任忌", new Font(new FontFamily("黑体"), 8), System.Drawing.Brushes.Black, 220, 210);            e.Graphics.DrawString("服务热线:15083128577", new Font(new FontFamily("黑体"), 8), System.Drawing.Brushes.Black, 320, 210);            e.Graphics.DrawString("入库时间:" + DateTime.Now.ToString(), new Font(new FontFamily("黑体"), 8), System.Drawing.Brushes.Black, 9, 230);        }