Entity Framework 7 Rollback method

Entity Framework 6 transaction rollback

As long as you will always be using SQL Server with EF, there is no need to explicitly use the catch to call the Rollback method. Allowing the using block to automatically rollback on any exceptions will always work....However, when you think about it from the Entity Framework point of view, you can see why all examples use the explicit call to Ro...

Rollback Entity Framework 7 database scheme in ASP.NET 5-beta8

Due to EntityFramework design meeting, they decided to modify some commands......Design Meeting Notes July 23, 2015...You could try to specify migration name during ...database update...dnx ef database update 0

Rollback on Entity Framework 6

Nothing will happen to the ...context....You can use it even after the rolled back.Only the database changes will be rolled back and the ...DbContextTransaction... is meant to be disposed once it has been committed or rolled back....You can use EF 6's latest transaction API as shown below....using (var context = new YourContext()) { ...

How the right way to rollback migration with Entity Framework

Your target migration should be the migration immediately previous to the one that you want to rollback:...update-database -SourceMigration MyLastMigration -TargetMigration MigrationPreviousToMyLastMigration ...The ...SourceMigration... parameter is optional in your case, as you have not applied any migration after ...MyLastMigration.......To check...

Entity Framework core : DbContextOptionsBuilder' does not contain a definition for 'usesqlserver' and no extension method 'usesqlserver'

This is a known issue in the project system. See ...dotnet/project-system#1741

Why does DbContext in EF Core return changed entity after Transaction Rollback

Because you are in the some context instance, the query in Assert will load from the same instance instead to have a direct query to your database. ...Try with other instance or reload it ...https://docs.microsoft.com/en-us/dotnet/api/microsoft.entityframeworkcore.changetracking.entityentry.reload?view=efcore-2.0

Rollback additions / removals to DBSets of the DbContext using a transaction in Entity Framework

Option #1 from ...https://code.msdn.microsoft.com/How-to-undo-the-changes-in-00aed3c4... is typically enough for most implementations where you want to roll-back changes in the DbContext without dropping and re-instantiating a Context. Generally the request would have failed and the call would have ended so the DbContext scope should end until a re...

No method to map entity to table in entity framework core

I looked into the Entity Framework Core repository on GitHub and searched for the method "Totable" inside the repository. It turns out it is defined as an extension method but it is in separate nuget package and library called Microsoft.EntityFrameworkCore.SqlServer...After I downloaded the package I got the Totable method that I need. Still it doe...

Entity framework - Conditionally query related entities with derived types methods

The expression...t.HasUser("something") ...cannot be translated to SQL, because it requires ...Conversation...object... and ...invoking... the ...HasUser... method. Only the well known methods which does not require materialized objects can be translated to SQL....Query translators process non translatable expressions differently. EF6 throws except...

Entity Framework Core: Update() method INSERTs instead of UPDATEs on dependent entity

So, I think I might have found the issue....As noted above, I first did a search to retrieve the Vehicle, like this:...Vehicle vehicle = dbContext.Vehicles.FirstOrDefault(v => v.Username.Equals(username));...In this case, the Vehicle.Session, if one existed, was ...not... populated. Later on, I did the update as the code above shows, and it failed ...