private async void cbCategoryItem_Loaded(object sender, RoutedEventArgs e)
{
List <MyHealthCheckService.Category> lstCategory = new List <MyHealthCheckService.Category>();
lstCategory = await objWCFservice.GetCategoriesAsync();
MyHealthCheckService.Category obj = new MyHealthCheckService.Category {
CategoryId = 0, Value = "Select a Category"
};
lstCategory.Insert(0, obj);
cbCategoryItem.ItemsSource = lstCategory.Select(l => l.Value).ToList();
cbCategoryItem.SelectedIndex = 0;
}
