C# 反射 - 从 System.Type 实例获取泛型参数
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/293905/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Reflection - Getting the generic parameters from a System.Type instance
提问by driis
If I have the following code:
如果我有以下代码：
MyType<int> anInstance = new MyType<int>();
Type type = anInstance.GetType();
How can I find out which type parameter(s) "anInstance" was instantiated with, by looking at the type variable ? Is it possible ?
如何通过查看类型变量找出实例化了哪个类型参数“anInstance”？是否可以 ？
采纳答案by Jon Skeet
Use Type.GetGenericArguments. For example:
使用Type.GetGenericArguments。例如：
using System;
using System.Collections.Generic;
public class Test
{
static void Main()
{
var dict = new Dictionary<string, int>();
Type type = dict.GetType();
Console.WriteLine("Type arguments:");
foreach (Type arg in type.GetGenericArguments())
{
Console.WriteLine(" {0}", arg);
}
}
}
Output:
输出：
Type arguments:
System.String
System.Int32
回答by Hans Passant
Use Type.GetGenericArguments(). For example:
使用 Type.GetGenericArguments()。例如：
using System;
using System.Reflection;
namespace ConsoleApplication1 {
class Program {
static void Main(string[] args) {
MyType<int> anInstance = new MyType<int>();
Type type = anInstance.GetType();
foreach (Type t in type.GetGenericArguments())
Console.WriteLine(t.Name);
Console.ReadLine();
}
}
public class MyType<T> { }
}
Output: Int32
输出：Int32
