C# 打印 无需自定义打印类

方法一：

 private void btnPrint_Click(object sender, EventArgs e)

        {
            //PrintPreviewDialog pd = new PrintPreviewDialog();
            //pd.ShowDialog(this);
            //PrintDialog pd = new PrintDialog();
            PrintDocument pd = new PrintDocument();
            pd.PrintPage += new PrintPageEventHandler(pd_PrintPage);
            PrintPreviewDialog cppd = new PrintPreviewDialog();
            cppd.Document = pd;
            cppd.ShowDialog();
        }


        void pd_PrintPage(object sender, PrintPageEventArgs e)
        {
            Bitmap bit = new Bitmap(this.Width, this.Height);

            this.panel2.DrawToBitmap(bit, new Rectangle(0, 0, this.panel2.Width, this.panel2.Height));         //*********

    //this.axWebBrowser1.DrawToBitmap(bit, new Rectangle(0, 0, this.panel2.Width, this.panel2.Height));

            e.Graphics.DrawImage(bit, 0, 0);
            bit.Dispose();

        }

方法二：（推荐）

打印：

object NullValue = null;
axWebBrowser1.ExecWB(SHDocVw.OLECMDID.OLECMDID_PRINT, SHDocVw.OLECMDEXECOPT.OLECMDEXECOPT_PROMPTUSER, ref NullValue, ref NullValue);

打印预览：

this.axWebBrowser1.ExecWB(SHDocVw.OLECMDID.OLECMDID_PRINTPREVIEW, SHDocVw.OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT);

页面设置：

 axWebBrowser1.ExecWB(SHDocVw.OLECMDID.OLECMDID_PAGESETUP, SHDocVw.OLECMDEXECOPT.OLECMDEXECOPT_PROMPTUSER);