In WPF,the button command trigger normal is immediately;but sometime we need Prevent False Triggering by Unintentionally pressed;So how to Press and hold the button with some time,such as 1s,or 500ms,then trigger the binding command. I hope it will work like behavior,just in Xaml to config the The duration time of the button. Thank you very much, BionicCode! Inspired by you, I change a litte then it work well: public class DelayButton : Button { ///

/// Delay Milliseconds ///

public int DelayInMilliseconds { get => (int)GetValue(DelayInMillisecondsProperty); set => SetValue(DelayInMillisecondsProperty, value); } public static readonly DependencyProperty DelayInMillisecondsProperty = DependencyProperty.Register( nameof(DelayInMilliseconds), typeof(int), typeof(DelayButton), new PropertyMetadata(0)); ///

/// Delay Command ///

public ICommand DelayCommand { get { return (ICommand)GetValue(DelayCommandProperty); } set { SetValue(DelayCommandProperty, value); } } public static readonly DependencyProperty DelayCommandProperty = DependencyProperty.Register("DelayCommand", typeof(ICommand), typeof(DelayButton), new PropertyMetadata(null)); ///

/// cts ///

private CancellationTokenSource? delayCancellationTokenSource; ///

/// Trigger flag ///

private bool isClickValid = false; ///

/// Mouse Down Event ///

/// protected override async void OnMouseLeftButtonDown(MouseButtonEventArgs e) { if (DelayInMilliseconds <= 0) { //One press,one trigger this.isClickValid = true; //Execute DelayCommand DelayCommand?.Execute(this); return; } try { this.delayCancellationTokenSource = new CancellationTokenSource(); await Task.Delay(TimeSpan.FromMilliseconds(this.DelayInMilliseconds), this.delayCancellationTokenSource.Token); //cheack mouse and not triggr if (e.LeftButton is MouseButtonState.Pressed && !this.isClickValid) { //One press,one trigger this.isClickValid = true; //Execute DelayCommand DelayCommand?.Execute(this); } } catch (OperationCanceledException) { return; } finally { this.delayCancellationTokenSource?.Dispose(); this.delayCancellationTokenSource = null; } } ///

/// Mouse Up Event ///

/// protected override void OnMouseLeftButtonUp(MouseButtonEventArgs e) { if (!this.isClickValid) { //time not enough this.delayCancellationTokenSource?.Cancel(); } else { //time enough,For Next this.isClickValid = false; } } ///

/// Mouse Leave Event ///

/// protected override void OnMouseLeave(MouseEventArgs e) { this.delayCancellationTokenSource?.Cancel(); } }