如何从 ASP.NET Core MVC 中的字典模型和列表模型中获取匹配的记录

Question

我在一个 JSON URL 中有 8 个键/值对。我在一列中只有 4 条匹配的记录。我只需要在视图中显示 4 个匹配的记录。我创建了一个 dict 模型和其他列表模型。 ModelList Compare

根据屏幕截图，我需要 dict 中的第一个值，例如列表中的值，以便我能够在视图页面中填充 json 记录。

字典1：

     public void GetList1Void()
        {

            string strAPIUrl = "https://raw.githubusercontent.com/wedeploy-examples/supermarket-web-example/master/products.json";
            string jsonUrlProducts;
            using (WebClient client = new WebClient())
            {
                jsonUrlProducts = client.DownloadString(strAPIUrl);
            }
            Dictionary<string, object> Jsondictresults = new Dictionary<string, object>();
            var objResponseB = JsonConvert.DeserializeObject<List<Dictionary<string, object>>>(jsonUrlProducts);
            foreach (Dictionary<string, object> DictMainKV in objResponseB)
            {
                foreach (KeyValuePair<string, object> item in DictMainKV)
                {
                    Jsondictresults.Add(item.Key, item.Key);
                }
                break;
            }
            ViewBag.VBList1Void = Jsondictresults.Keys;
            ViewData["VdataList1Void"] = Jsondictresults;
        }

列表2：

public List<K360mapMaster> GetList2()
{
    List<K360mapMaster> mappingListDb = new List<K360mapMaster>();
    var query = from K360mapMaster in _context.K360mapMasters
                select K360mapMaster;
    var mappings = query.ToList();

    foreach (var mappingData in mappings)
    {
        mappingListDb.Add(new K360mapMaster()
        {
            ClientCatalog = mappingData.ClientCatalog
        });
    }
    return mappingListDb;
}

插入表格设计

Insert Table

Answer 1

我根据你的代码做了一个简单的测试，你可以参考一下：

var jsonmodel = new List<ApiJsonModel>
{
    new ApiJsonModel
    {
        Title = "Brown eggs",
        Type = "dairy",
        Description = "Raw organic brown eggs in a basket",
        Filename = "0.jpg",
        Height = 600,
        Width = 400,
        Price = 28.1M,
        Rating = 4
    }
};
var json = JsonConvert.SerializeObject(jsonmodel);
var SampleList = JsonConvert.DeserializeObject<List<Dictionary<string, string>>>(json);
        
var SampleDBList = new List<K360mapMaster>
{
    new K360mapMaster{ ClientCatalog = "Description"},
    new K360mapMaster{ ClientCatalog = "Price"}
};

foreach (var dicItem in SampleList)
{
    foreach(var item in dicItem)
    {
        if (!SampleDBList.Select(s => s.ClientCatalog).ToList().Contains(item.Key))
        {
            dicItem.Remove(item.Key);
        }
    }
}

结果：

更新：

DataTable dt = new DataTable();

var columnNames = SampleList.SelectMany(dict => dict.Keys).Distinct();
dt.Columns.AddRange(columnNames.Select(c => new DataColumn(c)).ToArray());
foreach (Dictionary<string, string> item in SampleList)
{
    var row = dt.NewRow();
    foreach (var key in item.Keys)
    {
        row[key] = item[key];
    }

    dt.Rows.Add(row);
}

return View("Index", dt);

结果：

Answer 2

模型类：

 public class ApiJsonViewModel
{
    //[JsonPropertyName("title")]
    public string Title { get; set; }

    //[JsonPropertyName("type")]
    public string Type { get; set; }

    //[JsonPropertyName("description")]
    public string Description { get; set; }

    //[JsonPropertyName("filename")]
    public string Filename { get; set; }

    //[JsonPropertyName("height")]
    public string Height { get; set; }

    //[JsonPropertyName("width")]
    public string Width { get; set; }

    //[JsonPropertyName("price")]
    public string Price { get; set; }

    //[JsonPropertyName("rating")]
    public string Rating { get; set; }
}

查看：

@model System.Data.DataTable @using System.Data;

<table id="example" class="table table-bordered" style="width:100%">
    <thead>
        <tr>
            @foreach (DataColumn col in Model.Columns)
            {
                <th>@col.ColumnName</th>
            }
        </tr>
    </thead>
    <tbody>
        @foreach (DataRow row in Model.Rows)
        {
            <tr>
                @foreach (DataColumn col in Model.Columns)
                {
                    <td>@row[col.ColumnName]</td>
                }
            </tr>
        }
    </tbody>
</table>
<form method="post">
        <table class="table table-striped table-bordered" style="width:100%">
            <tr>
                <td align="center">
                    <button id="btnGetImportData" asp-action="GetImportData" class="btn btn-primary">Get ImportData</button>
                </td>
            </tr>
        </table>
    </form>

控制器：

 public class GetImportController : Controller
{
    private readonly K360ECommerceSContext _context;
    public GetImportController(K360ECommerceSContext context)
    {
        _context = context;
    }

    public IActionResult Index()
    {           
        var resultApiJsonProp = GetApiJsonProperties();
        DataTable dt = new DataTable();
        dt = JsonConvert.DeserializeObject<DataTable>(JsonConvert.SerializeObject(resultApiJsonProp));
        return View(dt);
    }

    public List<ApiJsonViewModel> GetApiJsonProperties()
    {
        string strjsonUrl;
        using (WebClient client = new WebClient())
        {
            strjsonUrl = client.DownloadString("https://raw.githubusercontent.com/wedeploy-examples/supermarket-web-example/master/products.json");
        }
        List<ApiJsonViewModel> ListApiJsonProp = JsonConvert.DeserializeObject<List<ApiJsonViewModel>>(strjsonUrl);
        return ListApiJsonProp;
    }

  
    [HttpPost]
    [ValidateAntiForgeryToken]
    public IActionResult GetImportData()
    {           
        var resultApiJsonProp = GetApiJsonProperties();
        var json = JsonConvert.SerializeObject(resultApiJsonProp);
        var SampleList = JsonConvert.DeserializeObject<List<Dictionary<string, string>>>(json);

        List<K360mapMaster> mappingListDb = new List<K360mapMaster>();
        var query = from K360mapMaster in _context.K360mapMasters
                    select K360mapMaster;
        var mappings = query.ToList();
        if (mappings != null)
        {
            foreach (var mappingData in mappings)
            {
                mappingListDb.Add(new K360mapMaster()
                {
                    ClientCatalog = mappingData.ClientCatalog
                });
            }
        }

        foreach (var dicItem in SampleList)
        {
            foreach (var item in dicItem)
            {
                if (!mappingListDb.Select(s => s.ClientCatalog).ToList().Contains(item.Key))
                {
                    dicItem.Remove(item.Key);
                }
            }
        }
            DataTable dataTabledt = new DataTable();
            dataTabledt = JsonConvert.DeserializeObject<DataTable>(JsonConvert.SerializeObject(SampleList));
            return View("Index",dataTabledt);
    }

    }