protected override void OnCreate(Bundle savedInstanceState)
 {
     base.OnCreate(savedInstanceState);
     _courseCategoryManager = new CourseCategoryManager();
     ListAdapter = new CourseCategoryManagerAdapter(this,
         global::Android.Resource.Layout.SimpleListItem1,
         _courseCategoryManager);
 }
        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            // Create your application here

            //List<string> categoryTitles = new List<string>() { "Category a", "Category b", "Category c" };
            //ListAdapter= new ArrayAdapter<String>(this,Android.Resource.Layout.SimpleListItem1 , categoryTitles);

            courseCategoryManager = new CourseCategoryManager();
            ListAdapter = new CourseCategoryManagerAdapter(this, Android.Resource.Layout.SimpleListItem1, courseCategoryManager);
        }