Your approach looks ok, but while using the SaveChanges on top of ObjectContext instance, i would prefer you to use SaveChanges(false) than SaveChanges() -. The reason behind that is if one of the operation inside the transaction results in error, then your context wont loose the states of an entity if...
Dec 26, 2020 · In all versions of Entity Framework, whenever you execute SaveChanges() to insert, update or delete the database, the framework will wrap that operation in a transaction. Here's what happens when we switch back to Environment.SpecialFolder.Personal, having TestSqLite.db in its corresponding C:\Users\SomeUser\Documents folder..
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Entity Framework 6 assemblies. .NET Framework 4.5.1 (.NET Framework 4.5.2 for Connector/NET 8.0.22). MySQL Server 5.6. Entity Framework 6.4 assemblies. .NET Standard 2.1 (.NET Core SDK 3.1 and Visual Studio 2019 version 16.5). context.SaveChanges();} transaction.Commit();}catch{.

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  • Improved Transaction Support provides support for a transaction external to the framework as well as improved ways of creating a transaction within the Entity Framework. Starting with Entity Framework 6, Database.ExecuteSqlCommand() will wrap by default the command in a transaction if one was not already present. There are overloads of this ...
  • So I'm working on a program which is a service that loops through records and calculates averages and then saves the changes to the database. This should return a IEmerable<T>. When my code got to the SaveChanges in my for loop it threw an exception, something about an existing transaction.

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Transaction Logs. Write all inserted / updated / deleted entities (serialized to JSON) to the separete table named TransactionLog. To capture transaction logs an entity must inherit from empty ITransactionLoggable { } interface. And the DbContext should overload SaveChanges() method with SaveChangesWithTransactionLog() wrapper,

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  • There isn’t an explicit entity to map the User-Role relationship (UsersRole in this case). How to add a new relation in such cases. The simplest way I could determine is just to call . DetectChanges(). This method will determine that a new item was added to an associated collection, change its state, and then you just call .SaveChanges().
  • Feb 06, 2013 · In the past with EF if you wanted to update a record you would need to do something like this: public HttpResponseMessage PutCustomer(Customer customer) { using (var context = new ChinookContext()) { var request = context.Customers.Single(c => c.CustomerId == customer.CustomerId); // todo this has to have an easier way.

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There isn’t an explicit entity to map the User-Role relationship (UsersRole in this case). How to add a new relation in such cases. The simplest way I could determine is just to call . DetectChanges(). This method will determine that a new item was added to an associated collection, change its state, and then you just call .SaveChanges().

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Npgsql has an Entity Framework 6 provider. You can use it by installing the EntityFramework6.Npgsql nuget. Code-based. To use Entity Framework with Npgsql, define a class that inherits from DbConfiguration in the same assembly as your class inheriting DbContext.

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Dec 26, 2020 · Dapper is literally much faster than Entity Framework Core considering the fact that there are no bells and whistles in Dapper. It is a straight forward Micro ORM that has minimal features as well. It is always up to the developer to choose between these 2 Awesome Data Access Technologies. This does not mean that Entity Framework Core is any ...

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\$\begingroup\$ About edit 2: Tests of the RepositoryBase has to be "integrated" since DbContext isn't abstract or have any good interface, but a nice trick is to use Database.SetInitializer(new DropCreateDatabaseAlways<YourContext>()) in those tests.

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Jul 29, 2015 · Finally the SaveChanges method of Entity Framework is called which updates the changes to the database and the GridView is again populated with data by making call to the BindGrid method. C# protected void Insert( object sender, EventArgs e)

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Entity Framework Extensions Batch SaveChanges. Limited Time Offer. The Entity Framework BatchSaveChanges method is the fastest way to save a few or hundreds of entities. The same sql in the same order as SaveChanges is used but batched in fewer commands to increase the performance.

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