entity-framework-core

I am posting this question just in case the solution I found would help someone else out. While working in Visual Studio 2017 rc4 each time I tried to run the Add-Migration command in the Package Manager console I get the following error: The term 'Add-migration' is not recognized... You just need to initialize the powershell module. I believe this is a bug, but it's pretty easy to work around. All you need to do is find the init.ps1 file and dot source it. Just type this into the package manager console: C:\Users\YourUserAccount\.nuget\packages\Microsoft.EntityFrameworkCore.Tools\1.1.0

For Asp.net Core apps, which one do we have to use? AddDbContext or AddDbContextPool ? According to EF Core documentation, AddDbContextPool provides high performance but the default Asp.net Core project templates use AddDbContext . The answer is here (under "DbContext pooling"): https://docs.microsoft.com/en-us/ef/core/what-is-new/ef-core-2.0#dbcontext-pooling DbContext is not thread-safe. So you cannot reuse the same DbContext object for multiple queries at the same time (weird things happen). The usual solution for this has been to just create a new DbContext object each time you need one.

I am trying to develop my first ASP.Net web application and in my solution I have two projects. A Web Application and Class Library (Package) . When I build the ASP.Net 4.5 version of this application I put my Entity Framework 6 entities into a class library, so I am doing that in the ASP.Net 5 version. The problem is when I install EntityFramework.Commands to the class library I get the error: The dependency EntityFramework.Command 7.0.0-rc1-final in Project DBEntities does not support framework .NetPlatform, Version = 5.4 My understanding from this SO question is that dotnet5.4 is the new

I am using Visual Studio 2015 and dotnet core and trying to develop an EF Core Code First project using Sqlite and this documentation / tutorial, which also uses Sqlite => NET Core - New Database When I try to add an initial migration from the command line ( I am CD-ed into the folder that my data model project is located in) by issuing the following command dotnet ef migrations add InitialMigration ...I get the following Error. No project was found. Change the current working directory or use the --project option. I even tried using the --project option like so. > dotnet --project "C:\Shiva

I have four custom fields on all of my entities. The four fields are CreatedBy , CreatedDate , UpdatedBy and UpdatedDate . Is there a way to hook into Entity Framework core events so that on an insert it will populate the CreatedDate with the current DateTime and CreatedBy with the current user? When there is an update to the database it would populate UpdatedDate with the current DateTime and UpdatedBy with the current user? Tseng Basically @Steve's approach is the way to go, but the current implementation of it makes it hard to unit test your project. With a little bit of refactoring, you

I'm trying to generate classes from a database (EntityFramework's database first approach). For convenience, I'm more or less walking along with this tutorial: https://docs.efproject.net/en/latest/platforms/full-dotnet/existing-db.html I'm at a point where I am running the equivalent of this line of code in the Visual Studio Package Manager Console: Scaffold-DbContext "Server=(localdb)\mssqllocaldb;Database=Blogging;Trusted_Connection=True;" Microsoft.EntityFrameworkCore.SqlServer -Verbose This line of code is generating the error (with -Verbose mode on): Using startup project 'EFSandbox'.