如何从泛型定义和泛型参数中获取泛型类型? [英] How to get generic type from generic definition and generic arguments?
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问题描述
在 C# 中,如何从泛型定义和泛型参数中构造泛型类型
In C#, how can I construct generic type from generic definition and generic arguments like
var genericDefinition = typeof(List);
var genericArgument = typeof(string);
// How can I get the Type instance representing List<string> from the 2 variables above?
在我的用例中,泛型参数是动态解析的.这在 C# 中可能吗?提前致谢.
In my usecase, the generic argument is dynamically resolved. Is this possible in C#? Thanks in advance.
推荐答案
没有 typeof(List)
这样的东西.但是, typeof(List<>)
工作正常,并且是开放的泛型类型.然后你只需使用:
There's no such thing as typeof(List)
. However, typeof(List<>)
works fine, and is the open generic type. Then you just use:
var genericDefinition = typeof(List<>);
var genericArgument = typeof(string);
var concreteListType = genericDefinition.MakeGenericType(new[] {genericArgument});
你应该发现concreteListType
是typeof(List
.
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