具体代码套用

 //打印功能
        private void btnPrint_Click(object sender, EventArgs e)
        {
            PrintDocument printDocument1 = new PrintDocument();
            //printDocument1.DefaultPageSettings.PrinterSettings.PrinterName = "ZDesigner GX430t";//打印机名称设置
            //printDocument1.DefaultPageSettings.PaperSize = new ("Custum", label_biaoda1.Width, label_biaoda1.Height);//设置纸张大小
            printDocument1.PrintPage += new PrintPageEventHandler(this.PrintDocument_PrintPage);
            PrintPreviewDialog printPreviewDialog1 = new PrintPreviewDialog();
            printPreviewDialog1.Document = printDocument1;
            DialogResult result = printPreviewDialog1.ShowDialog();
            if (result == DialogResult.OK)
                printDocument1.Print();
        }

        //以下代码获取到一张用作打印内容的图片
        private void PrintDocument_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {

            Image image = Image.FromFile(@"D:\12140\Desktops\Picture\1.png");
            Bitmap _NewBitmap = (Bitmap)image;
            /* e.Graphics.DrawImage(_NewBitmap, 0, 0, _NewBitmap.Width, _NewBitmap.Height);//调整图片的大小
             e.Graphics.DrawImage(_NewBitmap, 0, 0, 570, 380);*/

            //各种调整，消除锯齿
            /*e.Graphics.SmoothingMode = SmoothingMode.HighQuality;
            e.Graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
            _NewBitmap.SetResolution(583, 390);*/

            e.Graphics.DrawImage(image, 0, 0, image.Width, image.Height);
            //_NewBitmap.Save("D:\\0000-临时文件\\1.png", System.Drawing.Imaging.ImageFormat.Png);//图片保存
        }

这样就能够实现一个简陋一点儿的打印功能啦~~

点击打印按钮：