entity-framework-core-2.1

I created an Inline Table-Valued Functions (ITVF) in SQL Server that returns a table of values (query simplified for discussion purposes): CREATE FUNCTION dbo.VehicleRepairStatus() RETURNS TABLE AS RETURN SELECT VehicleID, CurrentStatus FROM VehicleRepairHistory ... Which I can reference in a query: SELECT v.ID, v.Name, r.CurrentStatus FROM Vehicle v LEFT OUTER JOIN dbo.VehicleRepairStatus() r on v.ID = r.VehicleID I'd like to be able to use it in Linq query: var vehicles = await _databaseContext.Vehicles .Join() // join ITVF here? .Where(v => v.Type == 'Bus' ) .OrderBy(v => v.Name)

I am attempting to reference an Inline Table-Valued Function (ITVF) in a Linq query: var results = await ( from v in _context.Vehicles from r in _context.UnitRepairStatus(v.VehicleNumber) <-- ITVF reference orderby v.VehicleNumber select new FooViewModel { ID = v.ID, VehicleNumber = v.VehicleNumber, InRepair = Convert.ToBoolean(r.InRepair) <-- ITFV field } ).ToListAsync(); When the query runs, it generates an error: InvalidOperationException: A second operation started on this context before a previous operation completed. Any instance members are not guaranteed to be thread safe. with a

Using Entity Framework Core 2.1 and an SQLite database, I get different behaviour from a LINQ GroupJoin if I use it after another Join. It is not clear if this is a bug or if there is something I am overlooking. I have created a minimal VS2017 project to reproduce this, which can be found here: https://gitlab.com/haddoncd/EntityFrameworkGroupJoinIssue In this example, I get one object for each row in the Blog table, each containing multiple PostTitles: db.Blogs .GroupJoin( db.Posts, s => s.BlogId, p => p.BlogId, (s, ps) => new { s.BlogId, s.BlogTitle, PostTitles = ps.Select(p => p.PostTitle),

I've been researching a lot online but did not find a proper solution. I was trying to use Entity Framework Core with MySQL by using database-first scaffold method to mapping table model while always received this error when applied the command Unable to retrieve project metadata. Ensure it's an MSBuild-based .NET Core project. If you're using custom BaseIntermediateOutputPath or MSBuildProjectExtensionsPath values, Use the --msbuildprojectextensionspath option. This is the command I am using to scaffold the database model: Scaffold-DbContext "server=localhost;port=3306;user=root;password=1234

I'm developing web app and near it small command line application that install ef core tables in the DB. Last can be done calling dbContext.Database.Migrate(); and this works. Now I want to provide unistall option (with this app). But how to remove migrations (means call functionality of dotnet ef database update 0 from my code) ? It could be not one command call (as it was in case with dbContext.Database.Migrate(); ). But snippet with loop through all migrations in migrations assembly and call of 'Downs'. EF Core provides publicly only the dbContext.Database.Migrate(); extension method used

Something rather scary is happening on my ASP.NET Core 2.1.0 MVC site. While I was browsing, all of a sudden it shows I am logged in as a different user (who also happens to be browsing the site at that time). I can't pinpoint whether there is a specific use case that triggers this, but this has happened twice now. Navigating to other pages still shows I am logged in as the other user. It even seems I take over the claims of the user I am incorrectly logged in as. My question is: what could make this happen? EDIT : I have since changed userManager and notificationService to 'scoped' and this