Open ASCX files

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    Active Server Pages Web User Control Format
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Have you encountered a problem with a ASCX file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a ASCX file here. In the further part of this page we have added a list of programs that should open your ASCX file. It is enough you choose a proper application for your operating system, download and install it.

What is ASCX file?

The file extension ASCX identifies ASP.Net user controls. It is reusable code that can be accessed in ASP.Net web pages. Ascx files are simple text files that can contain ASP.Net code as well as functions in .Net languages like C # and Visual Basic.

More info

Alternatively, a C # or Visual Basic file is referenced in an ASCX file, which provides the functionalities, while the ASCX file contains only the ASP.Net code for the web page elements. The referenced files usually have a double ending like ascx.Cs or ascx.Vb.

By default, the .Net framework also provides ASCX files, such as a user login or an input field, which can be used with Visual Studio, for example.

Please note that for newer versions of Adobe Dreamweaver the extension 'ASPNet_Support.Mxp' found in the Dreamweaver program folder under 'configurationDisabledFeatures' has to be installed first.

Programs which can open a ASCX file

How to open file with ASCX extension?

In order to open a file with ASCX extension one of the following programs must be installed on user’s system. If a problem with opening ASCX file occurred, it is highly possible that none of the listed programs is present on user’s system. Even if one or more said programs are installed, there may be issues related with given programs. In order to solve a problem with ASCX files, follow the instructions below.
Install Adobe Dreamweaver or other program from the list

Most often resolving problems with opening ASCX files is very simple. Just install an appropriate program that supports such files. All of the listed programs support ASCX files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of ASCX files or offer file conversion options, but may not be capable of editing such files.

Set Adobe Dreamweaver as the default program for opening ASCX files

It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate ASCX files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the Adobe Dreamweaver applications is not on the list, select "Browse" option in order to manually locate the directory where Adobe Dreamweaver has been installed.


Check the section that lists most common problems with ASCX files

Sometimes problems with opening ASCX files may not lie with the application itself, but can arise due to other causes, such as:

  • File data is corrupted
  • ASCX files has been not been completely download from the internet (only a part of the data has been downloaded)
  • Currently used user account hasn’t been granted necessary privileges to open ASCX files (should that be the case, please contact your system administrator or IT specialist)
  • ASCX file was being copied from a corrupted storage device and is incomplete or data is corrupted. (Copying files from unknown or untrusted sources should be conducted with great care as such files may contain malicious software, which can damage your system)

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