使用包含另一个对象数组的对象的反射读取属性 [英] Using reflection read properties of an object containing array of another object

问题描述

如何在 c# 中使用反射读取包含数组类型元素的对象的属性.如果我有一个名为 GetMyProperties 的方法并且我确定该对象是自定义类型，那么我如何读取数组的属性和其中的值.IsCustomType 是判断类型是否为自定义类型的方法.

How can I read the properties of an object that contains an element of array type using reflection in c#. If I have a method called GetMyProperties and I determine that the object is a custom type then how can I read the properties of an array and the values within. IsCustomType is method to determine if the type is custom type or not.

public void GetMyProperties(object obj) 
{ 
    foreach (PropertyInfo pinfo in obj.GetType().GetProperties()) 
    { 
        if (!Helper.IsCustomType(pinfo.PropertyType)) 
        { 
            string s = pinfo.GetValue(obj, null).ToString(); 
            propArray.Add(s); 
        } 
        else 
        { 
            object o = pinfo.GetValue(obj, null); 
            GetMyProperties(o); 
        } 
    } 
}

场景是，我有一个 ArrayClass 对象，ArrayClass 有两个属性:

The scenario is, I have an object of ArrayClass and ArrayClass has two properties:

-string Id
-DeptArray[] depts

DeptArray 是另一个具有 2 个属性的类:

DeptArray is another class with 2 properties:

-string code 
-string value

所以，这个方法得到一个ArrayClass的对象.我想从上到下读取所有属性并将名称/值对存储在字典/列表项中.我可以针对值、自定义、枚举类型执行此操作.我被对象数组卡住了.不知道该怎么做.

So, this methods gets an object of ArrayClass. I want to read all the properties to top-to-bottom and store name/value pair in a dictionary/list item. I am able to do it for value, custom, enum type. I got stuck with array of objects. Not sure how to do it.

推荐答案

试试这个代码:

public static void GetMyProperties(object obj)
{
  foreach (PropertyInfo pinfo in obj.GetType().GetProperties())
  {
    var getMethod = pinfo.GetGetMethod();
    if (getMethod.ReturnType.IsArray)
    {
      var arrayObject = getMethod.Invoke(obj, null);
      foreach (object element in (Array) arrayObject)
      {
        foreach (PropertyInfo arrayObjPinfo in element.GetType().GetProperties())
        {
          Console.WriteLine(arrayObjPinfo.Name + ":" + arrayObjPinfo.GetGetMethod().Invoke(element, null).ToString());
        }
      }
    }
  }
}

我已经测试过这段代码，它通过反射正确解析数组.

I've tested this code and it resolves arrays through reflection correctly.

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