如何使用反射来设置属性与类型列表与LT的; CustomClass> [英] How do I use Reflection to set a Property with a type of List<CustomClass>

问题描述

有已经是一个类似问题，但它似乎没有询问的问题暗示的情况。

There is already a similar question but it didn't seem to ask about the situation that the question implies.

用户在列表中有关自定义类，但他的名单对象类型。字符串

The user asked about custom classes in a list but his list object is of type string.

我有了酒吧列表的类Foo：

I have a class Foo that has a list of Bars:

    public class Foo : FooBase
    { 
       public List<Bar> bars {get; set;} 
       public Foo() {}
    }

    public class Bar
    {
       public byte Id { get; set; } 
       public byte Status { get; set; } 
       public byte Type { get; set; } 
       public Bar(){} 
    }

我实例化美孚使用反射通过Activator.CreateInstance（）。现在，我需要填充的酒吧对象条该列表。

I instantiate Foo using reflection via Activator.CreateInstance(). Now I need to populate that list of bars with Bar objects.

使用获得的美孚

Assembly.GetAssembly(FooBase).GetTypes().Where(type => type.IsSubclassOf(FooBase));

酒吧是在同议会一个公共类。我需要在该类型得到莫名其妙。我似乎无法看到包含在富列表的类型。我知道这是一个名单，但。我看到名单财产List`1。

Bar is a public class in the same Assembly. I'll need to get at that type somehow. I can't seem to see what the type of the list contained in Foo is. I know it's a list though. I'm seeing the list property as List`1.

我需要看到列表中持有什么类型的对象并处理相应。

I'd need to see what type of object the list holds and handle that accordingly.

推荐答案

文本

List`1

是泛型是引擎盖下编写方式 - 意思是1泛型类型ARG名单，又名列表与LT;> 。如果你有一个的PropertyInfo ，您应该设置;这将是封闭的通用列表<酒吧GT; 。难道你想找到酒吧给出的只是吗？

is the way that generics are written under the bonnet - meaning "List with 1 generic type arg, aka List<>". If you have a PropertyInfo, you should be set; this will be the closed generic List<Bar>. Is it that you want to find the Bar given just this?

如果这样，这是在不同的问题，包括这个讨论;重复键位（我更喜欢代码对的IList< T> ，因为它处理了一些边缘的情况下，如的继承的列表< T> ）：

If so, this is discussed in various questions, including this one; to duplicate the key bit (I prefer to code against IList<T>, since it handles a few edge-cases such as inheriting from List<T>):

static Type GetListType(Type type) {
    foreach (Type intType in type.GetInterfaces()) {
        if (intType.IsGenericType
            && intType.GetGenericTypeDefinition() == typeof(IList<>)) {
            return intType.GetGenericArguments()[0];
        }
    }
    return null;
}

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