private void Button1_Click(object sender, EventArgs e)
    {
        var FullResponse = Newtonsoft.Json.JsonConvert.DeserializeObject <Dictionary <string, object> >(WebResult);

        Newtonsoft.Json.Linq.JObject lv2 = FullResponse.Item("ModelState");
        Newtonsoft.Json.Linq.JObject lv3 = lv2.Item("");
        string DisplayResponse           = FullResponse.Item("Message") + " " + lv3.Item("$values").First;

        MessageBox.Show(DisplayResponse);
    }