.EDMX File

.edmx is ADO.NET Entity Data Model Designer File

Key Features: .EDMX File Extension

Features	Description
File Extension	.edmx
Format	N/A
Created by	Microsoft
Category	Developer

What's on this Page

How to open:
How to convert:

What is an .EDMX file?

The edmx file is an XML file that defines an Entity Data Model (EDM), describes the target database schema, and defines the mapping between the EDM and the database.

The edmx file also contains information that is used by the ADO.NET Entity Data Model Designer (Entity Designer) to render a model graphically.

Files with edmx file extension are commonly used by Microsoft Visual Studio for entity data models.

How to open:

Use Visual Studio to open *.edmx files.

How to convert:

There is no way how to convert *.edmx files to other formats.

ADO.NET Entity Data Model Designer File - File openers

Windows

Microsoft Visual Studio 2017

Microsoft

Developer

N/A

How to solve problems with EDMX files

Associate the EDMX file extension with the correct application. On :
Windows: Right click on any EDMX file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.EDMX files". Mac: Right click (or Ctrl-click) the EDMX file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
Update your software that should actually open .EDMX is ADO.NET Entity Data Model Designer File. Because only the current version supports the latest EDMX file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available .EDMX is ADO.NET Entity Data Model Designer File update.
To make sure that your EDMX file is not corrupted or virus-infected, get the file again and scan it with antivirus software.