Answer by Liyun Zhang - MSFT for how to handle keyboard event in maui with CommunityToolkit

There is no api can detect keyup event in the .net maui. So you can use the platform native api to do that.

• For the Windows

Put the following code in the ContenPage.cs:

        protected override void OnHandlerChanged()        {            base.OnHandlerChanged();#if WINDOWS            var winview = this.Handler.PlatformView as Microsoft.Maui.Platform.ContentPanel;            winview.PreviewKeyUp += (s, e) =>            {                if(e.Key == Windows.System.VirtualKey.Enter)                {                    (((BindingContext as TargetViewModel).EnterCommand) as RelayCommand).Execute(null);                    //excute the command                }            };#endif        }

• For the MacCatalyst

Put the following code in the \Platforms\MacCatalyst\AppDelegate.cs

public override void PressesBegan(NSSet<UIPress> presses, UIPressesEvent evt) {     if(App.Current.MainPage == TargetPage)     {         foreach (UIPress p in presses)         {             var key = p.Key;             if (key.Characters == "\r")             {                 ((((App.Current.MainPage as TargetPage).BindingContext as TargetViewModel).EnterCommand) as RelayCommand).Execute(null);             }         }     }     base.PressesBegan(presses, evt); }