Added in generic ViewModel

src/core/Microsoft.PowerToys.Settings.UI/Helpers/RelayCommand.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Windows.Input;
+
+namespace Microsoft.PowerToys.Settings.UI.Helpers
+{
+    public class RelayCommand : ICommand
+    {
+        private readonly Action _execute;
+
+        private readonly Func<bool> _canExecute;
+
+        public event EventHandler CanExecuteChanged;
+
+        public RelayCommand(Action execute)
+            : this(execute, null)
+        {
+        }
+
+        public RelayCommand(Action execute, Func<bool> canExecute)
+        {
+            _execute = execute ?? throw new ArgumentNullException(nameof(execute));
+            _canExecute = canExecute;
+        }
+
+        public bool CanExecute(object parameter) => _canExecute == null || _canExecute();
+
+        public void Execute(object parameter) => _execute();
+
+        public void OnCanExecuteChanged() => CanExecuteChanged?.Invoke(this, EventArgs.Empty);
+    }
+
+    public class RelayCommand<T> : ICommand
+    {
+        private readonly Action<T> _execute;
+
+        private readonly Func<T, bool> _canExecute;
+
+        public event EventHandler CanExecuteChanged;
+
+        public RelayCommand(Action<T> execute)
+            : this(execute, null)
+        {
+        }
+
+        public RelayCommand(Action<T> execute, Func<T, bool> canExecute)
+        {
+            _execute = execute ?? throw new ArgumentNullException(nameof(execute));
+            _canExecute = canExecute;
+        }
+
+        public bool CanExecute(object parameter) => _canExecute == null || _canExecute((T)parameter);
+
+        public void Execute(object parameter) => _execute((T)parameter);
+
+        public void OnCanExecuteChanged() => CanExecuteChanged?.Invoke(this, EventArgs.Empty);
+    }
+}