拉一个printDocument控件到界面。 
打印按钮的代码： 
C# code





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        private void button2_Click(object sender, EventArgs e)//执行打印

        {

            PrintDialog MyPrintDg = new PrintDialog();

            MyPrintDg.Document = printDocument1;

            if (MyPrintDg.ShowDialog() == DialogResult.OK)

            {

                try

                {

                    printDocument1.Print();

                }

                catch

                {   //停止打印

                    printDocument1.PrintController.OnEndPrint(printDocument1, new System.Drawing.Printing.PrintEventArgs());

                }

            }

        }


另外还要设置PrintPage事件：


C# code





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        private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)

        {

            e.Graphics.DrawImage(pictureBox1.Image, 20, 20);

        }

------解决方案--------------------

先在界面上拖入printDocument控件，然后打印事件中写：

byte[] input = new Byte[100000];

//读取图片
FileStream fs = new FileStream(@"图片路径", FileMode.Open, FileAccess.Read);
fs.Read(input, 0, 100000);

//设置打印页面
printDocument1.DefaultPageSettings.Landscape = true;

//向打印页绘制图片
Image image = Image.FromStream(fs);
e.Graphics.DrawImage(image, 20, 20);

//打印
printDocument1.Print();