Gui angefangen

GuiWPF_ViewModel/GuiWPF_ViewModel.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>

GuiWPF_ViewModel/MainViewModel.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace GuiWPF_ViewModel
+{
+    public class MainViewModel : NotificationObject
+    {
+        public string Titel { get; set; }
+
+        public MainViewModel()
+        {
+            Titel = "Dichtheitsprüfung by Damian";
+            //Initialisieren();
+        }
+    }
+}

GuiWPF_ViewModel/NotificationObject.cs

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+using System;
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+
+namespace GuiWPF_ViewModel
+{
+    public class NotificationObject : INotifyPropertyChanged
+    {
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        protected virtual void OnPropertyChanged([CallerMemberName]string propertyName="")
+        {
+            if(PropertyChanged != null)
+            {
+                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
+            }
+        }
+    }
+}

GuiWPF_ViewModel/ViewModelBase.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace GuiWPF_ViewModel
+{
+    public class ViewModelBase : NotificationObject
+    {
+        private bool valIsBusy;
+        private string valBusyMessage;
+
+        public bool IsBusy
+        {
+            get => valIsBusy;
+            set
+            {
+                if(valIsBusy != value)
+                {
+                    valIsBusy = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+        public string BusyMessage
+        {
+            get => valBusyMessage;
+            set
+            {
+                if(valBusyMessage != value)
+                {
+                    valBusyMessage = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
+    }
+}