打印WebBrowser控件内容

private void button1_Click(object sender, EventArgs e)
{
    webBrowser1.Print();
}

private void button1_Click(object sender, EventArgs e)
{
    PrintDocument printDocument = new PrintDocument();
    printDocument.PrintPage += new PrintPageEventHandler(printDocument_PrintPage);
    PrintPreviewDialog printPreviewDialog = new PrintPreviewDialog();
    printPreviewDialog.Document = printDocument;
    printPreviewDialog.ShowDialog();
}

void printDocument_PrintPage(object sender, PrintPageEventArgs e)
{
    int marginLeft = e.MarginBounds.Left;
    int marginTop = e.MarginBounds.Top;
    int marginRight = e.MarginBounds.Right;
    int marginBottom = e.MarginBounds.Bottom;

    HtmlElement body = webBrowser1.Document.Body;
    HtmlElementCollection elements = body.All;

    foreach (HtmlElement element in elements)
    {
        if (element.OffsetRectangle.Left< marginRight &&
            element.OffsetRectangle.Top< marginBottom)
        {
            Point point = new Point(
                element.OffsetRectangle.Left - marginLeft,
                element.OffsetRectangle.Top - marginTop);
            Size size = new Size(
                element.OffsetRectangle.Width,
                element.OffsetRectangle.Height);
            Rectangle rect = new Rectangle(point, size);
            element.DrawToBitmap(e.Graphics, rect);
        }
    }
}