InvokeMember，其中成员是具有反射的数组属性 [英] InvokeMember where the member is an array property with reflection
问题描述
所以我上周问了类似的问题，但我认为这很令人困惑，所以我会尽量简化它.
So I asked something similar last week, but I think it was pretty confusing, so Ill try to simplify it.
比如说我有一个只包含这样的属性的类:
Say for instance I have a class that contains only properties like this:
public class MyPropertyClass
{
public int IntegerProperty { get; set; }
}
现在假设我已经创建了另一个具有 MyPropertyClass 数组的类，如下所示:
Now suppose I have created another class with an array of MyPropertyClass like this:
public class AnotherPropertyClass
{
public MyPropertyClass[] ArrayProperty { get; set; }
}
现在是复杂的部分.我需要以某种方式动态创建一个 MyPropertyClass[] .到目前为止，我一直在用 List 尝试它.然后，使用此数组调用 InvokeMember.像这样:
Now here is the complicated part.
I need to dynamically create a MyPropertyClass[] somehow. I've been trying it with a List<object> thus far. Then, make a call to InvokeMember with this array. Something like this:
//The list that I am adding elements to elsewhere in the code
List<object> objList = new List<object>();
//Adding a couple elements
objList.Add(new MyPropertyClass());
objList.Add(new MyPropertyClass());
//Create the parameter object array, has to be length one and contain an
//object array casted to MyPropertyClass or it will throw an exception.
object[] ob = new object[1] { objList.ToArray() };
//Instantiate the actual object I want to assign the array to.
object obj = new AnotherPropertyClass();
//The call to InvokeMember
obj.GetType().InvokeMember(
"ArrayProperty",
BindingFlags.Instance | BindingFlags.Public | BindingFlags.SetProperty,
Type.DefaultBinder,
obj,
ob);
此代码将引发异常.问题是，objList.ToArray() 创建了一个 object[] 并且当 InvokeMember 尝试将它分配给 MyPropertyClass[] 时，它会抱怨类型不匹配，即使所有元素都是 MyPropertyClass 类型.基本上我需要的是一种说法，嘿，objList.ToArray() 中的所有元素都将是 MyPropertyClass"，即 object{MyPropertyClass[]} 同时让实际类型是任意的，它可能不是 MyPropertyClass，它可能是其他类型，我在编译时不知道.
This code will throw an exception. The problem is, objList.ToArray() creates an object[] and when InvokeMember tries to assign it to the MyPropertyClass[], it complains about the type mismatch, even though all of the elements are MyPropertyClass types. Basically what I need is a way to say, "hey, all of the elements in objList.ToArray() are going to be MyPropertyClass" i.e object{MyPropertyClass[]} while letting the actual type be arbitrary, it might not be MyPropertyClass, it could be some other type, I don't know at compile time.
到目前为止，我所拥有的只是我的尝试，如果您知道不同的方法，我会全神贯注.如果您想了解更多信息，请在此处查看我的旧问题:
What I have here is only my attempt so far, if you know a different approach i'm all ears. If you want more information, see my old question here:
我只是认为那里没有太多与我遇到的实际问题无关的额外内容.
I just think there is little too much extra stuff in there that's not related to the actual problem i'm having.
推荐答案
你可以像这样创建一个未指定类型的数组:
You can create an array of an unspecified type like this:
Array array = Array.CreateInstance(someType, someSize);
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