c# - 将 JSON 字符串数组转换为 C# 列表对象，为列表中模型的每个字段返回 "null"值

Question

我有字符串格式的 JSON 数组列表，并尝试在 C# 模型列表中进行转换。

我正在使用下面的代码行，但它为模型的每个字段返回 null 值。它在“objectList.Count”行中显示正确的计数，但在调试列表数组时，它显示“null”模型每个字段的值。

using System;
using System.Collections.Generic;
using Newtonsoft.Json;
public partial class TestPage : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
         ProfileDetailViewModel viewModel = new ProfileDetailViewModel();
        viewModel.ProfileDetailModelList = new List<ProfileDetailModel>();
        string content = @"[{""AccountNumber"":""1"",""CompressedAddress"":""1,  TEST,  READING,  Postcode"",""MType"":""10"",""BillNotification"":""Y"",""NewBillAlert"":""N"",""AccountType"":""1234568""}]";
        List<ProfileDetailModel> objectList = JsonConvert.DeserializeObject<List<ProfileDetailModel>>(content);
        if (objectList.Count > 0)
        {
            viewModel.Success = true;
            viewModel.ProfileDetailModelList = objectList;
        }
    }

}
public class ProfileDetailViewModel
{
    public List<ProfileDetailModel> ProfileDetailModelList { get; set; }
    public bool Success { get; set; }
}
public class ProfileDetailModel
{
    string AccountNumber { get; set; }
    string CompressedAddress { get; set; }
    string MType { get; set; }
    string BillNotification { get; set; }
    string NewBillAlert { get; set; }
    string AccountType { get; set; }
}

Answer 1

ProfileDetailModel 上的所有属性都是私有(private)的。您可以在此处检查类、结构等的默认可见性:https://msdn.microsoft.com/en-us/library/ba0a1yw2.aspx

只需添加public

public class ProfileDetailModel
{
       public string AccountNumber { get; set; }
       public string CompressedAddress { get; set; }
       public string MType { get; set; }
       public string BillNotification { get; set; }
       public string NewBillAlert { get; set; }
       public string AccountType { get; set; }
}