如何在C#中将InterLocked.Exchange应用于枚举类型?

问题描述：

public enum MyEnum{Value1, Value2}  
class MyClass 
{ 
    private MyEnum _field;   
    public MyEnum Field  // added for convenience
    {
        get { return _field; }  
        set { Interlocked.Exchange(ref _field, value); // ERROR CS0452  }
    }  
}

可以通过以下方式解决:

could be solved with:

 public enum MyEnum{Value1, Value2}  
 public class MyClass2  
 {  
   private int _field;  //change to int
   public MyEnum Field  // added for convenience
   { 
    get { return (MyEnum)_field; }
    set { System.Threading.Interlocked.Exchange(ref _field, (int)value); }
   }  
 }

有没有更好的方法来解决这个问题?

Is there any better way for this problem?

答

有没有更好的方法来解决这个问题?

Is there any better way for this problem?

如果您需要使用 Interlocked.Exchange ，那么这是最好的方法，实际上，我认为这是交换枚举的唯一方法.

If you need to use Interlocked.Exchange then this is the best way, in fact I think it is the only way to Exchange an enum.

出现编译器错误的原因是，编译器认为您想使用 Exchange< T> ，但是T必须是此类型的引用类型，因为您没有使用引用类型失败.因此，最好的解决方法是像完成操作一样将其强制转换为 int ，从而强制编译器使用非通用的 Exchange(int，int).

The reason you get the compiler error is that the compiler thinks you want to use Exchange<T>, but T needs to be a reference type for this to work, since you are not using a reference type it fails. So, the best work around is to cast to an int as you have done, and thus force the compiler to use the non-generic Exchange(int, int).

如何在C#中将InterLocked.Exchange应用于枚举类型?

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