[英]Reflection - Getting the generic arguments from a System.Type instance
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 argument(s) "anInstance" was instantiated with, by looking at the type variable?如何通过查看类型变量找出实例化了哪个类型参数“anInstance”? Is it possible?
是否可以?
Use Type.GetGenericArguments .使用Type.GetGenericArguments 。 For example:
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
Use Type.GetGenericArguments().使用 Type.GetGenericArguments()。 For example:
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
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