Common data annotations for Entity framework

Namespaces: System.ComponentModel.DataAnnotations

Key

This column is the primary key

[Databasegenerated (Databasegeneratedoption.none)]

Specifies that the column is not generated from the database

[Required]

[Required (errormessage = "cannot be empty")]

The column cannot enter a null value

[MaxLength (errormessage= "Bloggername must be under 10 characters"), MinLength (5)]

Defines the field length for this column

[Notmapped]

The column does not map to the database

[ComplexType]

The class is a combined type

[Concurrencycheck]

Concurrency check for this column

[Table name]

Specify the name of the table

[Column ("Blogdescription", typename= "ntext")]

Specifying column names and types of columns

[Databasegenerated (databasegenerationoption.computed)]

Common data annotations for Entity framework