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Unable to open edmx file in designer

It opens only as an XML file. In MS VS 2010 Ultimate + SP1.

I need to open it in a fashion designer.

What can I do?

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3 answers

In a file in the solution explorer try

Right Click> Open s> ADO.NET Entity Model Modeler

enter image description here

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I encountered the same problem in Visual Studio 2015, I tried to open the file using

Right Click > Open With > ADO.NET Entity Data Model Designer

and there is no option. From this, I realized that my installation of Visual Studio 2015 should be without some components, so I returned to setting up and installing Microsoft SQL Server Data Tools and Microsoft Web Developer Tools. Finally it worked! Options are available when you open from the solution, and the file can be opened

Components i added

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Adds references to the System.Data, System.Data.Entity, System.Core, System.Security, and System.Runtime.Serialization assemblies into the project, if they do not already exist.

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Source: https://habr.com/ru/post/905619/

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