Aufgabe Timer in Titel

FahzeugWPF/RelayCommand.cs

@@ -0,0 +1,44 @@
+namespace FahzeugWPF;
+
+using System.Diagnostics;
+using System.Windows.Input;
+
+public class RelayCommand : ICommand
+{
+    readonly Action<object> _execute = null;
+    readonly Predicate<object> _canExecute = null;
+
+    public RelayCommand(Action<object> execute)
+        : this(execute, null)
+    {
+        // Nothing to do
+    }
+
+    public RelayCommand(Action<object> execute, Predicate<object> canExecute)
+    {
+        if (execute == null)
+        {
+            throw new ArgumentNullException("execute");
+        }
+
+        this._execute = execute;
+        this._canExecute = canExecute;
+    }
+
+    [DebuggerStepThrough]
+    public bool CanExecute(object parameter)
+    {
+        return _canExecute == null ? true : _canExecute(parameter);
+    }
+
+    public event EventHandler CanExecuteChanged
+    {
+        add { CommandManager.RequerySuggested += value; }
+        remove { CommandManager.RequerySuggested -= value; }
+    }
+
+    public void Execute(object parameter)
+    {
+        _execute(parameter);
+    }
+}