Показать json в datagridview

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Using the GET method to show banks from the DB in the DataGridview but it doesn't show anything. Why?

Что я уже пробовал:

<pre>namespace BankData
{
    [Newtonsoft.Json.JsonObject("ResultData")]
    public class ResultData
    {
        public string Name { get; set; }
        public List<Bank> RresultObject { get; set; }

        public string UUId { get; set; }

         [Newtonsoft.Json.JsonProperty("FirstName")]
        public string FirstName { get; set; }

        public string LastName { get; set; }

        public string address { get; set; }
       
        public string tel { get; set; }

        public string Marital_status { get; set; }

        public string Occupation { get; set; }

        public string PayIN { get; set; }
    }
}

вернуть все банки:

public ResultData getAllBank()
{
    ResultData resultData = new ResultData();
    resultData.Name = "AllBank";
    List<Bank> banks = new List<Bank>();
    banks.AddRange(DataBaseService.getBank());
    resultData.RresultObject = banks;
    return resultData;
}

мой запрос:

async Task<object> GetBanktAsync(string path)
{
    HttpClient client = new HttpClient();
    HttpResponseMessage response = await client.GetAsync(path);
    object result=null;
    if (response.IsSuccessStatusCode)
    {
        result = response.Content.ReadAsAsync<object>().Result;
    }
    return result;
}

Then Load Manager:
        private async void Manager_Load(object sender, EventArgs e)
        {

            try
            {
                var resultString = await GetBanktAsync("http://localhost:35799/bank");
            
                var deserializeObject = Newtonsoft.Json.JsonConvert.DeserializeObject<object>(resultString.ToString());
                dataGridViewBank.DataSource = deserializeObject;
            }
            catch (Exception ex)
            {

            }

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