在 C# 中为来自 Salesforce REST API 的嵌套 JSON 数据设置 DataContract

Question

我需要帮助弄清楚如何将 JSON 数据导入我的 C# 应用程序，该应用程序从 Salesforce REST API.

获取数据

首先，我有一些 JSON 数据如下所示：

{
  "attributes" : {
    "type" : "Object__c",
    "url" : "/services/data/v34.0/sobjects/Object__c/a0FF000000CaEggEMA"
  },
  "Id" : "a0FF000000CaEggEMA",
  "Advertising__c" : 1720.0
}

而且我能够创建一个 class 和 DataContract 如下：

using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;

namespace MyNamespace

{
    [DataContract]
    public class Response
    {
        [DataMember(Name = "Advertising__c")]
        public decimal decAdvertising { get; set; }
    }

}

而且，我能够使用以下代码将数据导入我的程序并访问数据...

public static Response MakeRequest(string requestUrl)
{
    try
    {
        HttpWebRequest request = WebRequest.Create(requestUrl) as HttpWebRequest;
        request.Headers["X-PrettyPrint"] = "1";
        request.Headers["Authorization"] = "OAuth [OAuthKeyGoesHere]";
        using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
        {
            if (response.StatusCode != HttpStatusCode.OK)
                throw new Exception(String.Format(
                "Server error (HTTP {0}: {1}).",
                response.StatusCode,
                response.StatusDescription));
            DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(typeof(Response));
            object objResponse = jsonSerializer.ReadObject(response.GetResponseStream());
            Response jsonResponse = objResponse as Response;
            return jsonResponse;
        }
    }
    catch (Exception e)
    {
        System.Windows.Forms.MessageBox.Show(e.Message);
        return null;
    }
}

但是，在上面的示例中，每个 JSON 响应只有一个 Id 和一个 Advertising__c。所以 DataContract 似乎工作正常。

现在我想做的是从以下 JSON:

中获取 collection/list/array（我可以迭代的任何内容）项目

{
  "totalSize" : 4,
  "done" : true,
  "nextRecordsUrl" : "/services/data/v34.0/query/a1gF000003uAsG6IaO-2000",
  "records" : [ {
    "attributes" : {
      "type" : "Object__c",
      "url" : "/services/data/v34.0/sobjects/Object__c/a0FF000000FdAc6MAD"
    },
    "Id" : "a0FF000000FdAc6MAD",
    "Name" : "Name 1"
  }, {
    "attributes" : {
      "type" : "Object__c",
      "url" : "/services/data/v34.0/sobjects/Object__c/a0FF000000lkUJMATg"
    },
    "Id" : "a0FF000000lkUJMATg",
    "Name" : "Name 2"
  }, {
    "attributes" : {
      "type" : "Object__c",
      "url" : "/services/data/v34.0/sobjects/Object__c/a0FF000000CHaPkkMA"
    },
    "Id" : "a0FF000000CHaPkkMA",
    "Name" : "Name 3"
  }, {
    "attributes" : {
      "type" : "Object__c",
      "url" : "/services/data/v34.0/sobjects/Object__c/a0FF000000CIoiUZMA"
    },
    "Id" : "a0FF000000CIoiUZMA",
    "Name" : "Name 4"
  } ]
}

我尝试将以下代码添加到 DataContract class:

[DataContract]
public class Response2
{
    [DataMember(Name = "records")]
    public Response3 r3entry;
}
[DataContract]
public class Response3
{
    [DataMember(Name = "Id")]
    public string strId { get; set; }
    [DataMember(Name = "Name")]
    public string strName { get; set; }
}

现在我只得到两个字段的 NULLs。事实上，我实际上需要 done 字段，所以我知道是否返回并获取另一批数据。

在一个完美的世界中，我想要某种 collection/list/array 来遍历并获取 strId，然后将 strId 返回到代码中顶部以获取每个条目的详细信息。

这里有什么帮助吗？

Answer 1

您的 Response2 class 应如下所示：

public class Response2
{
    [DataMember(Name = "done")]
    public bool done;
    [DataMember(Name = "records")]
    public List<Response3> r3entry;
}

在 C# 中为来自 Salesforce REST API 的嵌套 JSON 数据设置 DataContract

Setting up DataContract in C# for nested JSON data from Salesforce REST API

c#

rest

json

salesforce