C＃如何获取字典中对象的属性？ [英] C# How to get the properties of an object in a dictionary?

问题描述

我有问题，我不知道如何获取字典中列出的对象的属性。



例如

I have the problem, that I don't know how to get the properties of an object that is listed in a dictionary.

E.g.

public class Person
{
   private string _name;

   public string Name
   {
      get { return _name; }
      set { _name = value; }
   }
}

在另一个类中，我创建了一些名为Peter，Paul和Marie的Person对象，并将它们保存在这样的字典：



字典<字符串，> persons = new Dictionary< string，>（）;

In another class I created some objects from "Person" with the names Peter, Paul and Marie and saved them in a dictionary like this:

Dictionary<string,> persons = new Dictionary<string,>();

persons.Add("Person1", new Person{ Name = Peter });
persons.Add("Person2", new Person{ Name = Paul });
persons.Add("Person3", new Person{ Name = marie });

现在我想获取属性Name的值与Person1键配对的对象。



如何解决这个问题？



编辑：



它只是在我脑海中点击，我找到了适用于我的情况的解决方案：

Now I want to get the value of the property "Name" from the object which is paired with the key "Person1".

How to solve this problem??

EDIT:

It just made "click" in my head and I found the solution which will work for my situation:

Person personName;

persons.TryGetVale("Person1", out personName);

string wantedName = personName.Name;

很抱歉，我打开了这个问题......我不认为我在问这个问题几分钟后就得到了解决方案......

Sorry that I opened this question... I did not think that I get the solution just a few minutes later than I asked this question...

推荐答案

从字典中读取的常用方法是

The usual way to read from a dictionary would be

string watsername = persons["Person3"].Name;

正如您已经通过使用 TryGetValue（）来暗示，你应该正确处理字典中可能存在 Person3 的可能性。

As you already hinting by your use of TryGetValue(), You should properly handle the possibility that Person3 may or may not exist in the dictionary.

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