using IronPdf; // Disable local disk access or cross-origin requests Installation.EnableWebSecurity = true; // Instantiate Renderer var renderer = new ChromePdfRenderer(); // Create a PDF from a HTML string using C# var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1>"); // Export to a file or Stream pdf.SaveAs("output.pdf"); // Advanced Example with HTML Assets // Load external html assets: Images, CSS and JavaScript. // An optional BasePath 'C:\site\assets\' is set as the file location to load assets from var myAdvancedPdf = renderer.RenderHtmlAsPdf("<img src='icons/iron.png'>", @"C:\site\assets\"); myAdvancedPdf.SaveAs("html-with-assets.pdf");

using IronPdf; using System; // Step 1. Creating a PDF with editable forms from HTML using form and input tags // Radio Button and Checkbox can also be implemented with input type 'radio' and 'checkbox' const string formHtml = @" <html> <body> <h2>Editable PDF Form</h2> <form> First name: <br> <input type='text' name='firstname' value=''> <br> Last name: <br> <input type='text' name='lastname' value=''> <br> <br> <p>Please specify your gender:</p> <input type='radio' id='female' name='gender' value= 'Female'> <label for='female'>Female</label> <br> <br> <input type='radio' id='male' name='gender' value='Male'> <label for='male'>Male</label> <br> <br> <input type='radio' id='non-binary/other' name='gender' value='Non-Binary / Other'> <label for='non-binary/other'>Non-Binary / Other</label> <br> <p>Please select all medical conditions that apply:</p> <input type='checkbox' id='condition1' name='Hypertension' value='Hypertension'> <label for='condition1'> Hypertension</label><br> <input type='checkbox' id='condition2' name='Heart Disease' value='Heart Disease'> <label for='condition2'> Heart Disease</label><br> <input type='checkbox' id='condition3' name='Stoke' value='Stoke'> <label for='condition3'> Stoke</label><br> <input type='checkbox' id='condition4' name='Diabetes' value='Diabetes'> <label for='condition4'> Diabetes</label><br> <input type='checkbox' id='condition5' name='Kidney Disease' value='Kidney Disease'> <label for='condition5'> Kidney Disease</label><br> </form> </body> </html>"; // Instantiate Renderer var renderer = new ChromePdfRenderer(); renderer.RenderingOptions.CreatePdfFormsFromHtml = true; renderer.RenderHtmlAsPdf(formHtml).SaveAs("BasicForm.pdf"); // Step 2. Reading and Writing PDF form values. var FormDocument = PdfDocument.FromFile("BasicForm.pdf"); // Set and Read the value of the "firstname" field var FirstNameField = FormDocument.Form.FindFormField("firstname"); FirstNameField.Value = "Minnie"; Console.WriteLine("FirstNameField value: {0}", FirstNameField.Value); // Set and Read the value of the "lastname" field var LastNameField = FormDocument.Form.FindFormField("lastname"); LastNameField.Value = "Mouse"; Console.WriteLine("LastNameField value: {0}", LastNameField.Value); FormDocument.SaveAs("FilledForm.pdf");

Updated December 4, 2023

.NET PDF Generator in 1 Click

With an extensive C# library, we can convert ASP.NET to PDF and HTML to PDF, and have full control over reading, editing, manipulating documents. Using IronPDF, we can convert an ASP.NET page to PDF document in just a single line of code. Here's how.

Step 1

1. Download IronPDF for C#

To get access to the full software library of C# PDF functionality, you can download IronPDF and use it free for development in your project and this tutorial.

There are two ways to download, whichever is easiest for you. Either install from a ZIP DLL Download or use the package via NuGet install.

Install-Package IronPdf

How to Tutorial

2. PDF .NET Generator

Convert

Once you install IronPDF into your Visual Studio project, it provides a vast number of methods to automate with PDF on ASP.NET such as replacing texts and images. You can even convert an ASP.NET webpage to PDF in just one line of code, as we've done below.

It provides a flexible and reliable framework for ASP.NET to develop a PDF using C#, which we know as developers is essential for our projects.

In the code below, we used a single click to generate a PDF from the whole ASP.NET webpage, thanks to the API method RenderThisPageAsPdf.

/**
ASP NET PDF Generator
anchor-pdf-net-generator
**/
using System;
using System.Web.UI;
using IronPdf;

namespace aspxtopdf
{
    public partial class _Default : Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            AspxToPdf.RenderThisPageAsPdf();
        }
    }
}

/**
ASP NET PDF Generator
anchor-pdf-net-generator
**/
using System;
using System.Web.UI;
using IronPdf;

namespace aspxtopdf
{
    public partial class _Default : Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            AspxToPdf.RenderThisPageAsPdf();
        }
    }
}

'''
'''ASP NET PDF Generator
'''anchor-pdf-net-generator
'''*
Imports System
Imports System.Web.UI
Imports IronPdf

Namespace aspxtopdf
	Partial Public Class _Default
		Inherits Page

		Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

		End Sub

		Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs)
			AspxToPdf.RenderThisPageAsPdf()
		End Sub
	End Class
End Namespace

VB C#

3. One-Click PDF Conversion

Here we have demonstrated an example of how to convert an ASPX Web Page to a PDF using an IronPDF function. As soon as you click on the button, the whole web page will be converted to a PDF. Without losing any quality, the whole webpage gets replicated into an editable document. It's as simple as that!