ASP.NET Core list of objects returns "empty" list

Question

My method returns an empty list:

Here is my code:

[HttpGet]
[Route("GetDomoticzDevices")]
public async Task<List<DomoticzDeviceStatus>> GetAsync() {
    KlevebrandContext dbContext = new KlevebrandContext();
    List<DomoticzDeviceStatus> domoticzDeviceStatuses = new List<DomoticzDeviceStatus>();

    foreach(var domoticzDevice in dbContext.TblDomoticzDevices.ToList())
    {
        var response = await client.GetAsync("http://10.0.0.11:8080/json.htm?type=devices&rid=" + domoticzDevice.Idx.ToString());

        domoticzDeviceStatuses.Add(new DomoticzDeviceStatus(domoticzDevice, ((JObject)JsonConvert.DeserializeObject(response.Content.ReadAsStringAsync().Result))["result"][0]["Data"].ToString(), ((JObject)JsonConvert.DeserializeObject(response.Content.ReadAsStringAsync().Result))["result"][0]["LastUpdate"].ToString()));
    }

    return domoticzDeviceStatuses;
}

In my debugger the domoticzDeviceStatuses has 15 objects with set values, but in my browser it is empty.

Heres the result in the debugger:

There are proper values in the list.

The DomoticzDeviceStatus class looks like this:

public class DomoticzDeviceStatus
{
    TblDomoticzDevice _tblDomoticzDevice;
    string _device_status;
    string _timestamp;

    public DomoticzDeviceStatus(TblDomoticzDevice tblDomoticzDevice, string device_status, string timestamp) { 
        _tblDomoticzDevice = tblDomoticzDevice;
        _device_status = device_status;
        _timestamp = timestamp;
    }
}

If theres any more information you need just tell me :)

Change fields to properties

lujcon
– lujcon

2022-11-25 21:19:35 +00:00
Commented Nov 25, 2022 at 21:19 — lujcon
– lujcon, Commented Nov 25, 2022 at 21:19
How do you mean?

MaxK123
– MaxK123

2022-11-25 21:19:59 +00:00
Commented Nov 25, 2022 at 21:19 — MaxK123
– MaxK123, Commented Nov 25, 2022 at 21:19

lujcon · Accepted Answer · 2022-11-25 21:31:51Z

4

Try to change fields in your model to properties.

public class DomoticzDeviceStatus
{
    public TblDomoticzDevice TblDomoticzDevice {get; set;}
    public string Device_status {get; set;}
    public string Timestamp {get; set;}

    public DomoticzDeviceStatus(TblDomoticzDevice tblDomoticzDevice, string 
device_status, string timestamp) { 
        TblDomoticzDevice = tblDomoticzDevice;
        Device_status = device_status;
        Timestamp = timestamp;
    }
}

edited Nov 25, 2022 at 21:31

answered Nov 25, 2022 at 21:25

lujcon

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