initial load

YouTubeViewers.WPF/ViewModels/ViewModelBase.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace YouTubeViewers.WPF.ViewModels
+{
+    public class ViewModelBase : INotifyPropertyChanged
+    {
+        public event PropertyChangedEventHandler? PropertyChanged;
+
+        protected virtual void OnPropertyChanged(string propertyName = null)
+        {
+
+                PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+
+        protected virtual void Dispose() { }
+    }
+}