除$ P $如何用PTED EF code首先枚举类型 [英] How is interpreted an enum type with EF Code First

问题描述

下面是一个模型：

Public class Person
{
    [Key]
    Public int PersonId { get; set: }
    Public int Age { get; set; }
    Public ColorEnum FavoriteColor { get; set; }
}

Public Enum ColorEnum
{
    Red = 1,
    Green = 2,
    Blue = 3
}

是否有可能在实体框架code首先使用人模型来生成相应的表？怎么样ColorEnum类型？

Is it possible for Entity Framework Code First to use the Person model to generate the corresponding table? What about the ColorEnum type?

感谢

推荐答案

EF 4.3不支持枚举。但已经宣布 枚举支持与EF 5 ，这是由于一起出去.NET 4.5的到来。为了处理好与$ C $枚举C-目前首先你会做类似如下：

EF 4.3 doesn't support Enums. But is has been announced that Enum support is coming with EF 5, which is due out alongside .NET 4.5. To handle enums with Code-First currently you'll do something like the following:

Public class Person
{
    [Key]
    Public int PersonId { get; set: }
    Public int Age { get; set; }

    public int FavoriteColorValue{ get; set;}
    [NotMapped]
    Public ColorEnum FavoriteColor 
    { 
        get{ return (ColorEnum)FavoriteColorValue; } 
        set{ FavoriteColorValue = (int)value; } 
    }
}

Public Enum ColorEnum
{
    Red = 1,
    Green = 2,
    Blue = 3
}

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