The feature is probably not implemented because normally changes only affect the objects which are actually in the unit of work. Cascades are not scalable. And I also think soft deletes are better in most cases. Maybe thats something for you? You might also want to look into Domain Driven design. That also covers the … Read more
You can specify connection string via ConnectionString parameter: Update-Database -ConnectionString “data source=server_name;initial catalog=db_name;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework” -ConnectionProviderName “System.Data.SqlClient” -Verbose Also you need to use this parameter with the same value for Add-Migration command: Add-Migration Version_Name -ConnectionString “data source=server_name;initial catalog=db_name;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework” -ConnectionProviderName “System.Data.SqlClient” -Verbose
Update Feb 2021 Apparently EF Core now supports ulong — see @JimbobTheSailor’s answer below. Older Entity Framework versions: Turns out that Entity Framework does not support unsigned data types. For uint columns, one could just store the value in a signed data type with a larger range (that is, a long). What about ulong columns? … Read more
No, there’s not. And it’s actually DateTimeKind.Unspecified. However, if you are concerned about supporting multiple timezones, you should consider using DateTimeOffset. It’s like a regular DateTime, except that it does not represent a “perspective” of time, it represents an absolute view, in which 3PM (UTC – 3) equals 4PM (UTC – 2). DateTimeOffset contains both … Read more
I got the answer by myself, but I still don’t know the root cause, now it works. I changed webconfig, here is the webconfig that make my project to work. I added a provider that is “System.Data.Sqlite”, Please note its type that is same with System.Data.Sqlite.EF6 <provider invariantName=”System.Data.SQLite” type=”System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6″ /> <add name=”SQLite Data Provider” … Read more
This is a limitation of EF that I reported in 2012 https://entityframework.codeplex.com/workitem/483 that is still not implemented in 6.0.2. EF uses a flat internal architecture and does not recognize namespaces. Might be coming in EF7 but not before. For now the only solutions is to rename the two classes to unique class names irrespective of … Read more
You need to create a reference, so it will be copied in the debug folder. So later it can accessed in runtime. Don’t to copy any files, just create this reference: private volatile Type _dependency; public MyClass() { _dependency = typeof(System.Data.Entity.SqlServer.SqlProviderServices); }
Entity Framework 6 does support .NET 4.0. You should update your version of NuGet then try again. You can find the download at http://www.nuget.org/. I successfully downloaded EntityFramework 6.0.0-rc1 from the main nuget.org feed from an application targeting .NET 4.0
Your model is not a 1:1 association. You can still have many Class2 objects referring to the same one Class1 object. Also, your model doesn’t guarantee that a Class2 referring to a Class1 is also referred back by this Class1 object — Class1 can refer to any Class2 object. How to configure 1:1? The common … Read more