Enabe and Disable ActionsCommandBar Items

[katie1348]

Hi,

This is a feature request, as I don't think this is currently possible.

I would like to be able to programmatically enable and disable items in the ActionsCommandBar, so that items can be made available from the ViewModel as the model changes.

Thanks

K

[javitosanchez]

Right now you can control your ActionsCommandBar items visibility with the canExecute delegate of the action item Command.

if (button.Command?.CanExecute(button?.CommandParameter) == true)
{
    button.Visibility = Visibility.Visible;
}
else
{
    button.Visibility = Visibility.Collapsed;
}

For example, all of our actions, handle the canExecute determining if the parameter is null or not:

public static ICommand Mailto
{
    get
    {
        return new RelayCommand<string>(async mail =>
        {
            if (!string.IsNullOrEmpty(mail))
            {
                await Launcher.LaunchUriAsync(new Uri(string.Format("mailto:{0}", mail)));
            }
        }, **(mail => !string.IsNullOrEmpty(mail)));**
    }
}

We did this because it's easier to hide a button than disabling and applying styles to it.

Works for you?