使用GenericTypeArgument在运行时更改类型

Question

这就是我想要的

(IList<Foo>)listPropertyInfo.GetValue(item)

这就是我获得Foo类型的方式

listPropertyInfo.GetValue(item).GetType().GenericTypeArguments[0]

这是我尝试但无法成功的原因

Convert.ChangeType(listPropertyInfo.GetValue(item), IList<listPropertyInfo.GetValue(item).GetType().GenericTypeArguments[0]>)

还有这个;

((typeof(IList<>).MakeGenericType(listPropertyInfo.GetValue(item).GetType().GenericTypeArguments.Single())))(listPropertyInfo.GetValue(item))

这是我试图实现的方法

public static void trigger(IList<T> result)
{
    foreach (var item in result)
    {
        foreach (var listPropertyInfo in typeof(T).GetProperties().ToList().FindAll(x => x.PropertyType.Name == typeof(IList<>).Name))
        {
             trigger((IList<Foo>)listPropertyInfo.GetValue(item));
        }
    }
}

Answer 1

我是这样解决的；

IList targetList = (IList)listPropertyInfo.GetValue(item);
Type foo = targetList.GetType().GenericTypeArguments.Single();
Type unboundGenericType = typeof(READ<>);
Type boundGenericType = unboundGenericType.MakeGenericType(foo);
MethodInfo doSomethingMethod = boundGenericType.GetMethod("trigger");
object instance = Activator.CreateInstance(boundGenericType);
doSomethingMethod.Invoke(instance, new object[] { targetList, f, properties });