You can avoid page breaks inside the <IMG> HTML elements if you set on true the PdfDocumentOptionsAvoidImageBreak flag of the converter. An object of PdfDocumentOptions type is exposed by the HtmlToPdfConverterPdfDocumentOptions property. Avoiding page break inside an image is possible only if the element height is smaller than the next PDF page height.
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 Avoid_Page_Breaks_Inside_Images_Using_API : 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;
// Set the option to avoid the page breaks inside the images in PDF
htmlToPdfConverter.PdfDocumentOptions.AvoidImageBreak = avoidImagesBreakCheckBox.Checked;
// Convert the HTML page to a PDF document in a memory buffer
byte[] outPdfBuffer = htmlToPdfConverter.ConvertUrl(urlTextBox.Text);
// 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=Avoid_Page_Breaks_Inside_Images_Using_API.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)
{
sampleCodeLiteral.Text = System.IO.File.ReadAllText(Server.MapPath("~/DemoAppFiles/Input/Code_Samples/CSharp/AspNet/HTML_to_PDF/Page_Breaks/Avoid_Images_Break.html"));
descriptionLiteral.Text = System.IO.File.ReadAllText(Server.MapPath("~/DemoAppFiles/Input/Descriptions/AspNet/HTML_to_PDF/Page_Breaks/Avoid_Images_Break.html"));
Master.CollapseAll();
Master.ExpandNode("HTML_to_PDF");
Master.ExpandNode("Page_Breaks_Control");
Master.SelectNode("Avoid_Page_Breaks_Inside_Images_Using_API");
}
}
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;
}
}
}
}