edmx-designer

The situation: Sometimes a database schema is not what you would consider an ideal representation of the system's information and you may not be able to change it. We have been using Entity Framework to create a nicer conceptual model to code against in situations like this. This means updating the model from the database and then changing it ourselves, either through the designer or through the .edmx file directly using a text editor. The problem: When you update the model from the database, all your carefully made changes are thrown out the window. This can make adding new entities a real

Does Visual Studio 2015 include .edmx support? I have a project that includes an .edmx data model and double-clicking it in VS2015 just opens the XML editor. There's no DbContext generator option in the file->new dialog. During setup of VS2015, go to the advanced options and select Web or Database Development tools. Now the Installers install the EF tools (Designer + templates). If you have VS already installed, to the Programs & features in control panel and modify the currently installed VS2015. You have to select the Microsoft SQL Server Data Tools in the VS2015 setup to get this editor

We're using the Entity Framework and we created our EDMX when our project was set to build .NET 4.5. Now we want to switch to .NET 4.0 but when we do, we get compilation errors for the EDMX file. It states the following error: Error 10027: The XML namespace for the conceptual model's schema element is not supported on this project's target framework version. Is there any solution other than recreating the EDMX file? Assuming you don't use features that shipped with .NET Framework 4.5 (enums, spatial types, stored procs with multiple result sets) you can do the following (be sure to back the

Hi everyone and thanks for taking the time to see my question. I'm running VS 2017 with Entity Framework 6 and asp.net MVC and have to add some field to one of my Entities. I added the corresponding fields in the database, but when I open the edmx file nothing shows apart the message "Entity Data Model Designer is unable to open this file." and it proposes me to open it in XML editor, but I have not the "Update model from Database" option when right clicking on the XML file. Is anyone knows what causes this ? I finally came accross my problem. I searched for like 5 hours how to make a new

I have an edmx file and I changed a table in my database. I know that there is an "Update Model from database" wizard, however in many cases this is useless. For example if I change a field from non null to nullable or if I remove fields the update model does not reflect the changes. I have had to remove the entity and add it back in to get the changes to appear in my model. Per the following question: How do I propagate database changes to my .edmx file? One of the answers seems to say the same thing, that you need to remove the entity and add it back in. Is this the definitive answer or is