using IronPdf; // 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");

Published January 24, 2022

Convert ASPX to PDF

As developers, we often use ASP.NET (ASPX) websites to generate dynamic PDF files such as forms, receipts, or managerial reports for customers to download as a PDF. While this process can be a complicated string of code on its own, today we'll use the IronPDF library to show how to convert ASPX to PDF in just one line.

Convert ASPX File PDF

Install the IronPDF C# PDF Library
Convert ASPX to PDF with 1 line of code
Compare the website to PDF render output example

Step 1

1. Install the IronPDF C# Library

First, let's access the free for development C# Library for converting ASPX files to PDF. You can download directly or access via NuGet. Install as usual into your Visual Studio project.

Install-Package IronPdf

How to Tutorial

2. Convert ASPX to PDF

Convert

Now that you have IronPDF, you'll see that it has the functionality for HTML conversion as well as ASPX to PDF generation. We keep it simple, just one line of code, so engineers at any level are able to use it.

We can convert ASPX pages to either our own developed webpage, or any website which is developed on ASP.NET.

Let's see an example. We'll use the method “RenderThisPageasPdf()” to cleanly convert the current page to PDF without any issues.

/**
Convert ASPX to PDF
anchor-convert-aspx-to-pdf
**/
using System;
using System.Web.UI;
using IronPdf;

namespace aspxtopdf
{
    public partial class SiteMaster : MasterPage
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            AspxToPdf.RenderThisPageAsPdf();
        }
    }
}

/**
Convert ASPX to PDF
anchor-convert-aspx-to-pdf
**/
using System;
using System.Web.UI;
using IronPdf;

namespace aspxtopdf
{
    public partial class SiteMaster : MasterPage
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            AspxToPdf.RenderThisPageAsPdf();
        }
    }
}

'''
'''Convert ASPX to PDF
'''anchor-convert-aspx-to-pdf
'''*
Imports System
Imports System.Web.UI
Imports IronPdf

Namespace aspxtopdf
	Partial Public Class SiteMaster
		Inherits MasterPage

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

VB C#

3. View Rendered Output

Using C#, IronPDF gives us an option to automate and create PDF documents.

In our example, we used a dummy ASPX website to convert the ASPX file to PDF. You can directly compare the output file, how closely the PDF result matches the original website. This kind of high quality rendering is unique to IronPDF and especially valuable when working with clients.