这是我用winform做的程序的画板，这些控件都是自己用GDI画的，黑色部分为picturebox控件，里面的图框是我自定义的控件类

有哪位高手帮帮忙？？？，我已经写出来了，但是不打印？？代码如下，只是显示正在打印，还出现选择文件的对话框，不需要这个。。。直接打印

  //打印按钮
        private void toolStripButton10_Click(object sender, EventArgs e)
        {
            PrintDialog myDialog = new PrintDialog();
            myDialog.Document = printDocument1;
            if (myDialog.ShowDialog() == DialogResult.OK)
            {
                try
                {
                    printDocument1.Print();
                }
                catch
                {
                    printDocument1.PrintController.OnEndPrint(printDocument1, new System.Drawing.Printing.PrintEventArgs());
                }
            }
        }

        private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            DrawForm df = (DrawForm)(dockPanel1.ActiveDocument);
            e.Graphics.DrawImage(df.pictureBox.Image,new Point(0,0));
        }