---
title: "How to add an aspx page in ASP.NET with code-behind?"  
description: "How to add an aspx page in ASP.NET with code-behind?"  
author: "Allen Scott"  
published: 2014-11-03  
updated: 2014-11-03  
canonical: https://www.mindstick.com/forum/2496/how-to-add-an-aspx-page-in-asp-dot-net-with-code-behind  
category: "asp.net"  
tags: ["c#"]  
reading_time: 1 minute  

---

# How to add an aspx page in ASP.NET with code-behind?

We have an [ASP.Net](https://www.mindstick.com/articles/934/default-folders-available-inside-the-asp-dot-net-application-folder) [application](https://www.mindstick.com/articles/12824/calculator-application-in-android), done by a third-party, that uses third-party [controls](https://www.mindstick.com/articles/66/how-to-create-controls-at-run-time-in-csharp-dot-net). The [problem](https://yourviews.mindstick.com/view/81399/tackling-the-problem-of-unemployment-during-corona-pandemic) is that some of these controls don't work with anything higher than IE8. I have been asked to look into this and try to figure out a way to make them work again (the company is upgrading to IE11).

Unfortunately, the [source code](https://www.mindstick.com/forum/33476/pls-send-me-source-code-for-changing-passward-in-asp-dot-net-i-tried-so-much-from-google-but-its-not-workining) is not available; there are no code-behind that I can work on. And the controls are no longer supported.

One solution that I can think of is adding a new .aspx page and use [inline](https://www.mindstick.com/interview/1012/describe-the-difference-between-inline-and-code-behind) code/[javascript](https://www.mindstick.com/articles/874/how-to-create-watermark-text-for-textbox-by-using-javascript)/code-behind to return the functionalities that are not working.

This is my [question](https://www.mindstick.com/blog/23175/how-to-solve-neet-question-paper-in-less-time): is this feasible? Or are there any other ways that I can [resolve](https://www.mindstick.com/forum/159427/windows-app-dll-not-found-resolve-library-issue) this, short of replacing the application with a new one?

## Replies

### Reply by Anurag Sharma

I ran into a similar problem a while ago and resolved it by decompiling the controls via a decompiler tool like .NET Reflector, making the necessary changes, recompiling and uploading back to the server.


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Original Source: https://www.mindstick.com/forum/2496/how-to-add-an-aspx-page-in-asp-dot-net-with-code-behind

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