如何确定是否一种类型是一个类型的集合? [英] How to determine if a type is a type of collection?
问题描述
我想,以确定是否运行时类型是某种集合类型。我下面的作品,但它似乎很奇怪,我要的名字,我认为是在一个数组像我这样做集合类型的类型。
I am trying to determine if a runtime type is some sort of collection type. What I have below works, but it seems strange that I have to name the types that I believe to be collection types in an array like I have done.
在代码下面,为通用逻辑的原因是因为,在我的应用程序,我希望所有的集合是通用的。
In the code below, the reason for the generic logic is because, in my app, I expect all collections to be generic.
bool IsCollectionType(Type type)
{
if (!type.GetGenericArguments().Any())
return false;
Type genericTypeDefinition = type.GetGenericTypeDefinition();
var collectionTypes = new[] { typeof(IEnumerable<>), typeof(ICollection<>), typeof(IList<>), typeof(List<>) };
return collectionTypes.Any(x => x.IsAssignableFrom(genericTypeDefinition));
}
我将如何重构这个代码更聪明或者更简单呢?
How would I refactor this code to be smarter or simpler?
推荐答案
真的所有这些类型的继承的 的IEnumerable
。您只能检查它:
Really all of these types inherit IEnumerable
. You can check only for it:
bool IsEnumerableType(Type type)
{
return (type.GetInterface("IEnumerable") != null);
}
如果你真的需要检查ICollection的:
or if you really need to check for ICollection:
bool IsCollectionType(Type type)
{
return (type.GetInterface("ICollection") != null);
}
看语法部分:
Look at "Syntax" part:
的 的IList
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