EVO HTML to PDF Converter Client for .NET allows you to easily convert in just a few lines of code HTML pages and HTML strings to PDF. In this section you can learn about the basic settings of the converter.
The HTML to PDF Converter object of HtmlToPdfConverter type can be initialized with the TCP/IP address of the server or with the HTTP URL address of the server, function of the HTML to PDF Server type you have installed.
TCP/IP Server. If you installed the HTML to PDF Server in an Azure Cloud Service Worker Role, in an in an Azure Service Fabric Application or in a Windows Service on a remote Windows machine you can use the HtmlToPdfConverterHtmlToPdfConverter(String, UInt32) constructor which takes as parameters the server IP address and the TCP port.
HTTP Server. If you installed the HTML to PDF Server in an Azure Cloud Service Web Role or in an IIS ASP.NET Web Application you can use the HtmlToPdfConverterHtmlToPdfConverter(Boolean, String) constructor which takes as parameters a flag to be set on true to indicate the usage of a HTTP service and the HTTP Server URL string as the second parameter.
You can also choose the HTML document to convert which can be:
A HTML page from a given URL. The URL must be accessible from the computer where the converter runs. If the page requires authentication or if you are using a proxy server to access Internet then you have to set the converter properties accordingly as described in documentation. The method you can use in this case is HtmlToPdfConverterConvertUrl(String)
A HTML string. When you convert a HTML string you also have the option to specify a base URL that will be used by converter to resolve the relative URLs found in the HTML string to fully qualified URLs. If your HTML string uses only fully qualified URLs then this parameter is not necessary The method you can use in this case is HtmlToPdfConverterConvertHtml(String, String)
The basic options you can set are grouped in a few categories.
HTML Viewer Options
HTML Viewer Width. This option is the equivalent in converter of the browser window width. The property you can set in your code to control the browser window width is HtmlToPdfConverterHtmlViewerWidth. When the browser window width is changed the HTML content displayed inside the window can have a different layout and something similar happens when you change the HTML Viewer width of the converter. At a given viewer width, the converter will capture by default the whole height of the HTML content, but you can set the HTML Viewer height to capture only the top part of the HTML page
HTML Viewer Height. This option is the equivalent in converter of the browser window height and can be used to limit the conversion to the top part of the HTML page. If this property is not set the entire page will be converted. The property you can set in your code to control the browser window height is HtmlToPdfConverterHtmlViewerHeight
PDF Page Options
PDF Page Size. You can set the page size of the generated PDF document to a standard size like A4, Letter, Legal, etc. or you can set custom PDF page size giving the width and height in points. 1 point is 1/72 inches. By default the PDF page size is A4. The property you can set in your code to control the PDF page size is PdfDocumentOptionsPdfPageSize. An object of PdfDocumentOptions type is exposed by the HtmlToPdfConverterPdfDocumentOptions property
PDF Page Orientation. You can set the page orientation of the generated PDF document to Portrait or to Landscape. By default the page orientation is Portrait. The property you can set in your code to control the PDF page orientation is PdfDocumentOptionsPdfPageOrientation. An object of PdfDocumentOptions type is exposed by the HtmlToPdfConverterPdfDocumentOptions property
Navigation Options
Navigation Timeout. This option represents the maximum time to wait for a web page to be loaded by converter. If the web page cannot be loaded in this time interval the converter will throw an exception. The property you can set in your code for this option is HtmlToPdfConverterNavigationTimeout.
Delay Conversion. This option represents an additional time to wait after the HTML page was loaded to allow the asynchronous operations to finish before starting to capture the HTML content. If you cannot estimate the additional time to wait then you have the option to manually trigger the conversion. The property you can set in your code for this option is HtmlToPdfConverterConversionDelay.
protected void convertToPdf() { // 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 = "4W9+bn19bn5ue2B+bn1/YH98YHd3d3c="; // Set HTML Viewer width in pixels which is the equivalent in converter of the browser window width htmlToPdfConverter.HtmlViewerWidth = int.Parse(htmlViewerWidthTextBox.Text); // Set HTML viewer height in pixels to convert the top part of a HTML page // Leave it not set to convert the entire HTML if (htmlViewerHeightTextBox.Text.Length > 0) htmlToPdfConverter.HtmlViewerHeight = int.Parse(htmlViewerHeightTextBox.Text); // Set PDF page size which can be a predefined size like A4 or a custom size in points // Leave it not set to have a default A4 PDF page htmlToPdfConverter.PdfDocumentOptions.PdfPageSize = SelectedPdfPageSize(); // Set PDF page orientation to Portrait or Landscape // Leave it not set to have a default Portrait orientation for PDF page htmlToPdfConverter.PdfDocumentOptions.PdfPageOrientation = SelectedPdfPageOrientation(); // Set the maximum time in seconds to wait for HTML page to be loaded // Leave it not set for a default 60 seconds maximum wait time htmlToPdfConverter.NavigationTimeout = int.Parse(navigationTimeoutTextBox.Text); // 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 if (conversionDelayTextBox.Text.Length > 0) htmlToPdfConverter.ConversionDelay = int.Parse(conversionDelayTextBox.Text); // The buffer to receive the generated PDF document byte[] outPdfBuffer = null; if (convertUrlRadioButton.Checked) { string url = urlTextBox.Text; // Convert the HTML page given by an URL to a PDF document in a memory buffer outPdfBuffer = htmlToPdfConverter.ConvertUrl(url); } else { string htmlString = htmlStringTextBox.Text; string baseUrl = baseUrlTextBox.Text; // Convert a HTML string with a base URL to a PDF document in a memory buffer outPdfBuffer = htmlToPdfConverter.ConvertHtml(htmlString, baseUrl); } }