Insert Page Breaks in PDF Using CSS in HTML

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

// Use Winnovative Namespace
using WinnovativeClient;

namespace WnvHtmlToPdfDemo.HTML_to_PDF.Page_Breaks
{
    public partial class Insert_Page_Breaks_Before_After_Using_CSS : System.Web.UI.Page
    {
        protected void convertToPdfButton_Click(object sender, EventArgs e)
        {
            // Get the server IP and port
            String serverIP = textBoxServerIP.Text;
            uint serverPort = uint.Parse(textBoxServerPort.Text);

            // Create a HTML to PDF converter object
            HtmlToPdfConverter htmlToPdfConverter = null;
            if (radioButtonUseTcpService.Checked)
                htmlToPdfConverter = new HtmlToPdfConverter(serverIP, serverPort);
            else
                htmlToPdfConverter = new HtmlToPdfConverter(true, textBoxWebServiceUrl.Text);

            // Set optional service password
            if (textBoxServicePassword.Text.Length > 0)
                htmlToPdfConverter.ServicePassword = textBoxServicePassword.Text;

            // Set license key received after purchase to use the converter in licensed mode
            // Leave it not set to use the converter in demo mode
            htmlToPdfConverter.LicenseKey = "fvDh8eDx4fHg4P/h8eLg/+Dj/+jo6Og=";

            // Set an adddional delay in seconds to wait for JavaScript or AJAX calls after page load completed
            // Set this property to 0 if you don't need to wait for such asynchcronous operations to finish
            htmlToPdfConverter.ConversionDelay = 2;

            byte[] outPdfBuffer = null;

            if (convertHtmlRadioButton.Checked)
            {
                string htmlWithForm = htmlStringTextBox.Text;
                string baseUrl = baseUrlTextBox.Text;

                // Convert the HTML string with page-break-before:always and page-break-after:always styles to a PDF document in a memory buffer
                outPdfBuffer = htmlToPdfConverter.ConvertHtml(htmlWithForm, baseUrl);
            }
            else
            {
                string url = urlTextBox.Text;

                // Convert the HTML page with page-break-before:always and page-break-after:always styles to a PDF document in a memory buffer
                outPdfBuffer = htmlToPdfConverter.ConvertUrl(url);
            }

            // Send the PDF as response to browser

            // Set response content type
            Response.AddHeader("Content-Type", "application/pdf");

            // Instruct the browser to open the PDF file as an attachment or inline
            Response.AddHeader("Content-Disposition", String.Format("attachment; filename=Insert_Page_Breaks_Before_After_HTML_Elements_Using_CSS.pdf; size={0}", outPdfBuffer.Length.ToString()));

            // Write the PDF document buffer to HTTP response
            Response.BinaryWrite(outPdfBuffer);

            // End the HTTP response and stop the current page processing
            Response.End();
        }

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                string currentPageUrl = HttpContext.Current.Request.Url.AbsoluteUri;
                string rootUrl = "http://www.winnovative-software.com/demo/";

                htmlStringTextBox.Text = System.IO.File.ReadAllText(Server.MapPath("~/DemoAppFiles/Input/HTML_Files/Page_Break_Before_and_After_Using_CSS.html"));
                baseUrlTextBox.Text = rootUrl + "DemoAppFiles/Input/HTML_Files/";

                urlTextBox.Text = rootUrl + "DemoAppFiles/Input/HTML_Files/Page_Break_Before_and_After_Using_CSS.html";

                sampleCodeLiteral.Text = System.IO.File.ReadAllText(Server.MapPath("~/DemoAppFiles/Input/Code_Samples/CSharp/AspNet/HTML_to_PDF/Page_Breaks/Insert_Page_Breaks_in_CSS.html"));
                descriptionLiteral.Text = System.IO.File.ReadAllText(Server.MapPath("~/DemoAppFiles/Input/Descriptions/AspNet/HTML_to_PDF/Page_Breaks/Insert_Page_Breaks_in_CSS.html"));

                Master.CollapseAll();
                Master.ExpandNode("HTML_to_PDF");
                Master.ExpandNode("Page_Breaks_Control");
                Master.SelectNode("Insert_Page_Breaks_Using_CSS");
            }
        }

        protected void convertHtmlRadioButton_CheckedChanged(object sender, EventArgs e)
        {
            urlPanel.Visible = convertUrlRadioButton.Checked;
            htmlStringPanel.Visible = !convertUrlRadioButton.Checked;
        }

        protected void convertUrlRadioButton_CheckedChanged(object sender, EventArgs e)
        {
            urlPanel.Visible = convertUrlRadioButton.Checked;
            htmlStringPanel.Visible = !convertUrlRadioButton.Checked;
        }

        protected void demoMenu_MenuItemClick(object sender, MenuEventArgs e)
        {
            switch (e.Item.Value)
            {
                case "Live_Demo":
                    demoMultiView.SetActiveView(liveDemoView);
                    break;
                case "Description":
                    demoMultiView.SetActiveView(descriptionView);
                    break;
                case "Sample_Code":
                    demoMultiView.SetActiveView(sampleCodeView);
                    break;
                default:
                    break;
            }
        }

        protected void viewHtmlLinkButton_Click(object sender, EventArgs e)
        {
            Response.Redirect(urlTextBox.Text);
        }
    }
}

<!DOCTYPE html>
<html>
<head>
    <title>Insert Page Breaks Before and After HTML Elements Using CSS</title>
</head>
<body style="width: 1010px; font-family: 'Times New Roman'; font-size: 20px; margin: 5px">
    <div style="width: 100%; height: 500px; background-color: aliceblue; border: 2px solid gray; text-align: center">
        <div style="width: 100%; height: 200px"></div>
        A block <b>without any page break</b> style<br />
        <br />
        [ Follows a block with <i>page-break-before : always</i> and <i>page-break-after : always</i> styles ]
    </div>
    <div style="page-break-before: always; page-break-after: always; width: 100%; height: 500px; background-color: gainsboro; border: 2px solid gray; text-align: center">
        <div style="width: 100%; height: 200px"></div>
        A block with <b>page-break-before : always</b> and <b>page-break-after : always</b> styles<br />
        <br />
        <b>This block will be always rendered alone in a PDF page</b><br />
        <br />
        [ Follows a block with <i>page-break-after : always</i> style ]
    </div>
    <div style="page-break-after: always; width: 100%; height: 500px; background-color: beige; border: 2px solid gray; text-align: center">
        <div style="width: 100%; height: 200px"></div>
        A block with <b>page-break-after : always</b> style<br />
        <br />
        <b>Nothing will be rendered after this block in PDF page</b>
        <br />
        <br />
        [ Follows a block <i>without any page break</i> style ]
    </div>
    <div style="width: 100%; height: 500px; background-color: aliceblue; border: 2px solid gray; text-align: center">
        <div style="width: 100%; height: 200px"></div>
        A block <b>without any page break</b> style<br />
        <br />
        [ Follows a block with <i>page-break-before : always</i> style ]
    </div>
    <div style="page-break-before: always; width: 100%; height: 500px; background-color: lightgray; border: 2px solid gray; text-align: center">
        <div style="width: 100%; height: 200px"></div>
        A block with <b>page-break-before : always</b> style<br />
        <br />
        <b>This block will always be rendered at the top of a PDF page</b>
    </div>
</body>
</html>