抛出异常：System.dll

Question

在下面代码的按钮点击事件中，我现在可以将我的数据发送到API控制器的后期操作 按钮单击Windows窗体的事件

 private void button1_Click(object sender, EventArgs e)
    {
        WebClient client = new WebClient();
        client.Headers[HttpRequestHeader.ContentType] = "application/json";
        MyClass myClass = new MyClass();
        myClass.SearchText = textBox1.Text;
        myClass.CountryCode = textBox2.Text;
        string serialisedData = JsonConvert.SerializeObject(myClass);
        var response = client.UploadString("http://localhost:50232/api/Place/PostSimple", serialisedData);
        var x= JsonConvert.DeserializeObject(response);
    }
}
public class MyClass
{
    public string SearchText { get; set; }
    public string CountryCode { get; set; }
}

但是在调试时，我无法移动

GeocodingResponse geocode = GoogleMaps.Geocode.Query(geocodeRequest); 

这一行的PostSimple动作方法。并在

中获得例外

 var response = client.UploadString("http://localhost:50232/api/Place/PostSimple", serialisedData); of Windows form application as

抛出异常：System.dll中的“System.Net.WebException”

其他信息：操作已超时

ApiController代码

[HttpPost]
    public List<Place> PostSimple(MyClass value)
    {
        List<Place> list = new List<Place>();
        var geocodeRequest = new GeocodingRequest
        {
           Address = value.SearchText,
           Components = new GeocodingComponents()
            {                   
                Country = value.CountryCode
            }
        };
        try
        {
            GeocodingResponse geocode = GoogleMaps.Geocode.Query(geocodeRequest);
            if (geocode.Status == GoogleMapsApi.Entities.Geocoding.Response.Status.OK)
            {
                TimeZoneRequest request = new TimeZoneRequest();
                request.Location = new Location(geocode.Results.First().Geometry.Location.Latitude, geocode.Results.First().Geometry.Location.Longitude);
                request.Language = "en";
                request.TimeStamp = DateTime.Now.AddDays(-60);
                TimeZoneResponse result = GoogleMaps.TimeZone.Query(request);
                var x = System.TimeZoneInfo.FindSystemTimeZoneById(result.TimeZoneName);
            }
        }
        catch (Exception ex)
        {
            throw ex;
        }
       return list;
    }

MyClass代码

public class MyClass
{
    public string SearchText { get; set; }
    public string CountryCode { get; set; }
}

任何人都可以帮我解决这个问题。谢谢你提前