initial load

YouTubeViewers.WPF/Commands/LoadYouTubeViewersCommand.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using YouTubeViewers.WPF.Stores;
+using YouTubeViewers.WPF.ViewModels;
+
+namespace YouTubeViewers.WPF.Commands
+{
+    public class LoadYouTubeViewersCommand : AsyncCommandBase
+    {
+        private readonly YouTubeViewersViewModel _youTubeViewersViewModel;
+        private readonly YouTubeViewersStore _youTubeViewersStore;
+
+        public LoadYouTubeViewersCommand(YouTubeViewersViewModel youTubeViewersViewModel, YouTubeViewersStore youTubeViewersStore)
+        {
+            _youTubeViewersViewModel = youTubeViewersViewModel;
+            _youTubeViewersStore = youTubeViewersStore;
+        }
+
+        public override async Task ExecuteAsync(object? parameter)
+        {
+            _youTubeViewersViewModel.IsLoading = true;
+            
+            try
+            {
+                await _youTubeViewersStore.Load();
+            }
+            catch (Exception)
+            {
+                throw;
+            }
+            finally
+            {
+                _youTubeViewersViewModel.IsLoading = false;
+            }
+        }
+    }
+}