TypeMap

This attribute is used to map a property into its equivalent type from the database (via System.Data.DbType).

This attribute supercede the type-level mapping defined at the TypeMapper object.

Below is a a sample code on how to map an existing System.DateTime property to a System.Data.DbType.DateTime2 database type.

public class Person
{
    public int Id { get; set; }
    public string Name { get; set; }
    [TypeMap(DbType.DateTime2)] // Mapping this to 'DateTime2'
    public DateTime DateOfBirth { get; set; }
}

In some realistic scenario, we tend to force some byte[] type to become a binary.

public class Person
{
    public int Id { get; set; }
    public string Name { get; set; }
    [TypeMap(DbType.Binary)] // Mapping this to 'Binary'
    public byte[] Image { get; set; }
}