为什么我看不到这个枚举扩展方法?(我觉得我要疯了)。
File1.cs
namespace Ns1
{
public enum Website : int
{
Website1 = 0,
Website2
}
}
File2.cs
using Ns1;
namespace Ns2
{
public class MyType : RequestHandler<Request, Response>
{
public override Response Handle(Request request, CRequest cRequest)
{
//does not compile, cannot "see" ToDictionary
var websites = Website.ToDictionary<int>();
return null;
}
}
//converts enum to dictionary of values
public static class EnumExtensions
{
public static IDictionary ToDictionary<TEnumValueType>(this Enum e)
{
if(typeof(TEnumValueType).FullName != Enum.GetUnderlyingType(e.GetType()).FullName) throw new ArgumentException("Invalid type specified.");
return Enum.GetValues(e.GetType())
.Cast<object>()
.ToDictionary(key => Enum.GetName(e.GetType(), key),
value => (TEnumValueType) value);
}
}
}
new Website()
与Website.Website1
给出相同的结果,因为它都返回默认值,即底层值为0的默认值。但我并不推荐这种语法 :-) - Hans Kesting