问首先将字段映射到EntityFramework 5代码中的枚举

EN

public class Message {

        public enum MessageType {
            Text = 0,
            Audio = 1,
            Image = 2
        }

        public int Uid { get; set; }
        public MessageType Type { get; set; }
        public String Text { get; set; }

}

public class MessagesMap : EntityTypeConfiguration<Message> {

    public MessagesMap() {

        // Primary Key
        this.HasKey(t => t.Uid);

        // Properties
        this.Property(t => t.Text)
            .HasMaxLength(1000);

        // Table & Column Mappings
        this.ToTable("wc_messages");
        this.Property(t => t.Uid).HasColumnName("UID");
        this.Property(t => t.Type).HasColumnName("Type");
        this.Property(t => t.Text).HasColumnName("Text");

    }
}