相关疑难解决方法(0)

如何将列表转换为数据表

[Serializable]
public class Item
{
    public string Name { get; set; }
    public double Price { get; set; }
    public string @URL { get; set; }

    public Item(string Name, string Price, string @URL)
    {
        this.Name = Name;
        this.Price = Convert.ToDouble(Price);
        this.@URL = @URL;
    }

    public override string ToString()
    {
        return this.Name;
    }
}

我试过用:

static DataTable ConvertToDatatable(List<Item> list)
{
    DataTable dt = new DataTable();

    dt.Columns.Add("Name");
    dt.Columns.Add("Price");
    dt.Columns.Add("URL");
    foreach (var item in list)
    {
        dt.Rows.Add(item.Name, Convert.ToString(item.Price), item.URL);
    }

    return dt; …

我的webapi方法是：

public JsonResult<List<MyClass>> PullData()
{
    List<MyClass> data = new List<MyClass>();
    data = db.TableName.Select(x => new MyClass
    {
        Id = x.Id,
        IsActive = x.IsActive,
        //other attribute..
    }).ToList();

    return Json(data);
}

我将此 webapi 用作：

public async Task<string> Index()
{
    string apiUrl = "http://localhost:90/api/Scheduler/pulldata";

    using (HttpClient client = new HttpClient())
    {
        client.BaseAddress = new Uri(apiUrl);
        client.DefaultRequestHeaders.Accept.Clear();
        client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));

        HttpResponseMessage response = await client.GetAsync(apiUrl);
        if (response.IsSuccessStatusCode)
        {
            var data = await response.Content.ReadAsStringAsync();

            JsonConvert.DeserializeXmlNode(data, "root"); //exception: XmlNodeConverter can only convert JSON that begins with an …