From documentation: EF Core allows you to model entity types that can only ever appear on navigation properties of other entity types. These are called owned entity types. The entity containing an owned entity type is its owner. Owned entities are essentially a part of the owner and cannot exist without it, they are conceptually … Read more
Craig Stuntz does a good job of explaining that it is the designer related xml (the positions of entities and associations etc on the design surface) that causes most of the problems here. Conflict resolution within the edmx:Runtime element however, is very achievable. The best strategy for dealing with conflicts in the designer related xml … Read more
No, you can’t get a IQueryable from SqlQuery*, this is because what IQueryable is doing is building a SQL string dynamically based on what select and where filters you put in. Because in SqlQuery you are providing the string Entity Framework can not generate that dynamic string. Your options are either dynamically build the string … Read more
Now with pictures (as it took me about an hour of trial and fail) Get DotPeek from Jetbrains (Standalone version) Open DotPeek -> File -> Open -> browse to your project bin folder and open EntityFramework.dll Right mouse button on EntityFramework then choose Generate Pdb… Go to folder where you exported it and open EntityFramework.pdb … Read more
Sounds like your SQL date column is non-nullable, but you haven’t initialized the date on your entity before saving?
For EF Code First you can use ordinary connection string if you are using SQL Server. <add name=”DataContext” connectionString=”Data Source=myserver.com;Initial Catalog=MyDataBase;Persist Security Info=True;User ID=username;Password=password” providerName=”System.Data.SqlClient” />
You can right click on the design surface and select Diagram -> Export as Image and you get the entire edmx model generated as bmp
Here is how I did it: [DatabaseGenerated(DatabaseGeneratedOption.Computed)] public DateTime CreatedDate{ get; set; } in my migration’s Up() method: AddColumn(“Agents”, “CreatedDate”, n => n.DateTime(nullable: false, defaultValueSql: “GETUTCDATE()”));
This may be in two reasons: There is some other DbContext in code, that’s why automatic migrations could not decide, which context to use. There is some new change, which loops a comparison of schema and code model, so EF simply could not find the difference. In general, automatic migrations are simple and fast to … Read more
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