Daten werden nun geladen

GuiWPF/ViewModelBase.cs

@@ -1,37 +1,25 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
 using System.Text;
+using System.Threading.Tasks;
 
-namespace GuiWPF
+namespace WPF
 {
-    public class ViewModelBase : NotificationObject
+    public abstract class ViewModelBase : INotifyPropertyChanged
     {
-        private bool valIsBusy;
-        private string valBusyMessage;
-
-        public bool IsBusy
+        public event PropertyChangedEventHandler PropertyChanged;
+        protected void OnPropertyChanged(string propertyName)
         {
-            get => valIsBusy;
-            set
-            {
-                if(valIsBusy != value)
-                {
-                    valIsBusy = value;
-                    OnPropertyChanged();
-                }
-            }
+            this.OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
         }
-        public string BusyMessage
+
+        protected virtual void OnPropertyChanged(PropertyChangedEventArgs e)
         {
-            get => valBusyMessage;
-            set
-            {
-                if(valBusyMessage != value)
-                {
-                    valBusyMessage = value;
-                    OnPropertyChanged();
-                }
-            }
+            var handler = this.PropertyChanged;
+            if (handler != null)
+                handler(this, e);
         }
     }
 }