返回如何从 Web API 中以 C# 返回动态对象列表。

huangapple
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英文:

How to return a dynamic object list from web api in c#

问题

I Have an object

  1. public class GeneralResponseClass
  2. {
  3.     public int ErrorCode { set; get; }
  4.     public string Date { set; get; }
  5.     public String ErrorMessage { set; get; }
  7.     public List<dynamic> Data = new List<dynamic>();
  8.     public bool Success { set; get; }
  9.     public GeneralResponseClass()
  10.     {
  11.         Date = DateTime.Now.ToString("dd/MM/yyyy HH:mm:ss");
  12.     }
  13. }

in my API Function i want to return the object

  1. [HttpGet]
  2. public GeneralResponseClass Get()
  3. {
  4.     GeneralResponseClass generalResponseClass = new GeneralResponseClass();
  6.     generalResponseClass.ErrorCode = 0;
  7.     generalResponseClass.ErrorMessage = "";
  9.     generalResponseClass.Success = false;
  11.     generalResponseClass.Data.Add(new
  12.     {
  13.         Name = "User 1",
  14.         Email = "User1@user.com"
  15.     });
  17.     generalResponseClass.Data.Add(new
  18.     {
  19.         Name = "User 2",
  20.         Email = "User2@user.com"
  21.     });
  23.     return generalResponseClass;
  24. }

in the response i get don't get the List

  1. {
  2.     "errorCode": 0,
  3.     "date": "06/01/2020 16:32:12",
  4.     "errorMessage": "",
  5.     "success": false
  6. }

Why doesn't the List<dynamic> Data return?

英文:

I Have an object

  1. public class GeneralResponseClass
  2. {
  3.     public int ErrorCode { set; get; }
  4.     public string Date { set; get; }
  5.     public String ErrorMessage { set; get; }
  7.     public List&lt;dynamic&gt; Data = new List&lt;dynamic&gt;();
  8.     public bool Success { set; get; }
  9.     public GeneralResponseClass()
  10.     {
  11.         Date = DateTime.Now.ToString(&quot;dd/MM/yyyy HH:mm:ss&quot;);
  12.     }
  13. }

in my API Function i want to return the object

  1. [HttpGet]
  2. public GeneralResponseClass Get()
  3.     {
  4.         GeneralResponseClass generalResponseClass = new GeneralResponseClass();
  6.         generalResponseClass.ErrorCode = 0;
  7.         generalResponseClass.ErrorMessage = &quot;&quot;;
  9.         
  10.         generalResponseClass.Success = false;
  14.         generalResponseClass.Data.Add(new
  15.         {
  16.             Name = &quot;User 1&quot;,
  17.             Email = &quot;User1@user.com&quot;
  18.         });
  20.         generalResponseClass.Data.Add(new
  21.         {
  22.             Name = &quot;User 2&quot;,
  23.             Email = &quot;User2@user.com&quot;
  24.         });
  26.         return generalResponseClass;
  27.     }

in the response i get don't get the List

  1.  {
  2.    errorCode: 0,
  3. date: &quot;06/01/2020 16:32:12&quot;,
  4. errorMessage: &quot;&quot;,
  5. success: false
  6. }

Why The List<dynamic> Data dont return?

答案1

得分: 2

你不能返回带有“anonymous”对象的集合。您可以使用类似于“anonymous”的“ExpandoObject”。您还可以为您的对象类型创建一个自定义类，因为它们在您的情况下具有相同的属性（至少在模板中是这样的）。

您可以在这里查看更多关于“ExpandoObject”的信息：https://stackoverflow.com/questions/1653046/what-are-the-true-benefits-of-expandoobject

英文:

You cannot return any collection with anonymous object. You can use ExpandoObject which is simillar to anonymous. You can also create a custom class for your type of object since they have the same properties in your case (at least in the template).

You can check for more on ExpandoObject here: https://stackoverflow.com/questions/1653046/what-are-the-true-benefits-of-expandoobject

huangapple
  • 本文由 发表于 2020年1月6日 22:34:48
  • 转载请务必保留本文链接：https://go.coder-hub.com/59613910.html
  • api
  • c#
  • json
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