I have installed the ODAC 11 and I would like to use it with EF Database First but it doesn't appear in the "Choose Data Source" dialog just the SQL Server providers.
I don't know how to go further.
I need a little help, please.
I'm not sure what you installed, but this has support for Entity Framework. I've used it before with no issue.
Related
I'm trying to use Entity Data Source Control to access my database first Entity Framework model but I can't get it to work with Entity framework 6. It gives me an error saying its not compatible with Entity Framework 6 and instead directed me to install Microsoft.AspNet.EntityDataSource from Nuget which I've done. but for some reason I can't configure it using the wizard. In design view, it doesn't show the little arrow to open the smart tasks panel.
I'm new to ASP.NET and don't know how to configure it in markup view
which data source (or perhaps another technique) should I use to access data objects in Entity Framework 6?
I don't think you can use the wizard to configure EF6 EntiyDataSourceControl. The wizard only works with EF5. You need to configure the EF6 EntityDataSourceControl in code. Here is a corresponding ticket.
I have gone through same situation as yours.Finally this solved the issue,
Uninstalled EF6 and installed version 5 of Entity Framework through Nuget Package Manager Console, then it worked fine
I am using Sqlserver 2008 . I want to generate or update edmx. it take 8-15 minute to generate edmx. is there is any tool to create edmx fast?
I have a tool that works with VS2008, VS2010, VS2012, and VS2013, that can do both full and incremental updates of EDMX files. It doesn't work with VS2015 though, as development has been on ice for a while, and VS2015 don't support the same integration interfaces as previous versions of Visual Studio.
You can download it from https://huagati.com/edmxtools/ (free nowadays), and there's a screencast showing the functionality I think you are looking for at https://www.youtube.com/watch?v=doqYOlcEAZM
I don't know any way to generate EDMX model besides the "Update Model from database" approach. However, from my own experience, if your model is too big, you have 2 options:
Split your current model into several parts (Microsoft recommends 50 entities per model); or
Use Code-First instead of EDMX
Hope it helps!
I have some trouble using the EF Power Tools and I searched now for several days but I didn't find any solution for my problem.
Maybe someone has a new idea or hint for me. My problem is that when I want to create a Preview Data Model VS says that it couldn't find the required ADO.NET driver. I'm working with Postgres and EF 6.
It worked several days before but, as far as I can see within my source control nothing important changed. So I started to search for a solution and tried several things. I guess it has something to do with my app.config but I have no idea what I'm exactly missing there.
The app it self runs great and also the connection to the db works fine, only the EF power tools seems to have a problem.
It would be great if anyone could help me.
Regards Alex
hey I know it's an old question but I'm a little stuck trying to even get Npgsql to work with EF4 at all! I can't seem to register the provider wherever it needs to go in order for it to show up in the the Entity Data Model Wizard.
When trying to create a new model, I try and create the connection to the Postgres database in the "Change Data Source" dialog. But the only providers in here are differing flavours of MSSQL and "". The data provider combo on this form doesn't show Npgsql or anything postgres related.
I have already done the usual of registering npgsql and the mono security assemblies in the GAC. I've modified machine.config (32 and 64bit) to have the provider factory entry required.
I'm using VS2010 SP1 on Windows 7 64bit & Npgsql 2.0.11.92. I'm developing for .NET4.
Any ideas of how to get this working would be much appreciated.
Unfortunately Npgsql doesn't have support for VS Wizards.
We have a very early work in progress which you can give a try.
Checkout our downloads page and look for the Npgsql.Provider.zip file.
Follow the install instructions there and let me know if it works ok for you.
Again, sorry for the lack of support.
I hope it helps.
I am trying to use MVC3 with the Entity framework with Code First, but the code Template generation process in MS Visual Web Developer 2010 - is not detecting my Model in the models folder - giving a message - "No Model classes are available" - although I do have model classes for which I want to create controllers.
The templating option I've selected is "Controller with read/write actions and views using the Entity Framework".
I've uninstalled and reinstalled Web Developer 2010, but still having the same error.
Anyone know how I can get around this error?
xixonia's response worked for me. All I needed to do was build/rebuild the project and then everything worked as expected.
Rebuild all did not fix this issue for me... until I closed Studio, reopened and rebuilt all. Then it worked like a charm.
After create models must be build your project.
http://www.asp.net/mvc/tutorials/hands-on-labs/aspnet-mvc-4-entity-framework-scaffolding-and-migrations
I had this same issue and for me I had to go to the properties of the entity model in the entity model designer and change Code Generation Strategy to Default. It had been set to None because I had experimented with a DbContext generator.
I had this same issue.
While digging through my references, just before throwing the computer against the wall, I found that I had EntityFramework version 4.1 installed in the web project (by VS 2010 when the MVC 3 project was created).
I had 4.3.1 installed in the domain project (from nuget).
I uninstalled both of them and reinstalled from nuget.
Now everything is working again.
Hope this helps.
If you still have this problem then follow these steps to fix the problem:
1. Right click on your project and select [Manage NuGet Packages]
2. On the opened popup window, on the left hand pane, select Updates
3. On the right hand pane, at the very top right click on the Update All
During this process, it will ask you whether you want to overwrite the existing references (not sure about the exact phrase). So, say "Yes" to overwrite...
Now try to add the controller to your project and everything will be fine.
Good Luck!