public async void SaveCost() { CostingModel costingModel = new CostingModel() { Density = this.Density, Length = this.Length, Weight = this.Weight, Width = this.Width, Thickness = this.Thickness }; string requestUrl = "http://10.6.0.133/api/Test"; ServiceHandler serviceHandler = new ServiceHandler(); string jsonContent = JsonConvert.SerializeObject(costingModel); string result = await serviceHandler.PostRequest(requestUrl, jsonContent); //BaseResponse addGroupResponse = (BaseResponse)JsonConvert.DeserializeObject(result, typeof(BaseResponse)); }