EF Data Annotations NEW

https://msdn.microsoft.com/en-in/data/jj591583

https://msdn.microsoft.com/ru-ru/data/gg193958.aspx

EF Data Annotations NEW

https://msdn.microsoft.com/en-in/data/jj591583

https://msdn.microsoft.com/ru-ru/data/gg193958.aspx

EF Data Annotations NEW

https://msdn.microsoft.com/en-in/data/jj591583

Data Annotations

https://msdn.microsoft.com/en-us/data/jj591583.aspx

https://msdn.microsoft.com/ru-ru/data/gg193958.aspx

http://www.entityframeworktutorial.net/code-first/dataannotation-in-code-first.aspx

EntityFramework DateTime Data Annotation

        [DataType(DataType.Date)]
        [DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]
        public DateTime EnrollmentDate { get; set; }

http://www.asp.net/mvc/overview/older-versions/getting-started-with-ef-5-using-mvc-4/creating-a-more-complex-data-model-for-an-asp-net-mvc-application

http://stackoverflow.com/questions/5252979/assign-format-of-datetime-with-data-annotations

http://stackoverflow.com/questions/23413625/entity-framework-default-datetime-annotation-does-not-migrate

EntityFramework [DatabaseGenerated(DatabaseGeneratedOption.Computed)]

http://stackoverflow.com/questions/23413625/entity-framework-default-datetime-annotation-does-not-migrate

 AddColumn("dbo.Specialty", 
                  "CreatedDate", 
                  c => c.DateTime(defaultValueSql: "GETDATE()"));

Отменить Migration и включить автоматическую Migration

http://stackoverflow.com/questions/11679385/reset-entity-framework-migrations

You need to delete the state:

Delete the migrations folder in your project
Delete the __MigrationHistory table in your database (may be under system tables)


Then run the following command in the Package Manager Console:
Enable-Migrations -EnableAutomaticMigrations -Force

And finally, you can run:
Add-Migration Initial

Data Annotation

http://dataannotationsextensions.org/

http://msdn.microsoft.com/en-us/data/jj591583.aspx

http://andrey.moveax.ru/mvc3-in-depth/entity-framework/04-code-first-attributes/