实体框架将多列映射到C＃复合类型 [英] Entity Framework map multiple columns to C# complex type

问题描述

我有一个表，我使用四列作为主键：Major，Minor，MajorRevision，MinorRevision。

我正在使用Entity Framework 6.1 Code-First懒惰加载，有人可以给我一个例子，我可以如何将这些列映射到ac＃System.Version类型？

解决方案

例如：

  public class TableV {
 public int Major {get;组; } 
 public int Minor {get;组; } 
 public int MajorRevision {get;组; } 
 public int MinorRevision {get;组; 
 
 [NotMapped] 
 System.Version Version {
 get {return new Version（Major，Minor，MajorRevision，MinorRevision} 
 set {Major = value.Major ; Minor = value.Minor; MajorRevision = value.MajorRevision; MinorRevision = value.MinorRevision;} 
} 
} 
  

，但您不能在查询中使用版本。

I have a table where I use four columns as the primary key: Major, Minor, MajorRevision, MinorRevision.

I'm using Entity Framework 6.1 Code-First lazy loading, can someone give me an example of how I can map those columns to a c# System.Version type?

解决方案

for example:

    public class TableV {
        public int Major { get; set; }
        public int Minor { get; set; }
        public int MajorRevision { get; set; }
        public int MinorRevision { get; set; }

        [NotMapped]
        System.Version Version {
            get { return new Version(Major, Minor, MajorRevision, MinorRevision}
            set {Major = value.Major; Minor = value.Minor; MajorRevision = value.MajorRevision; MinorRevision = value.MinorRevision; }
        }
    }

but you can't use Version in queries.

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