#### [Pf2e\.WPF](index.md 'index') ### [Pf2e\.WPF\.EntityViewer\.ViewModel](Pf2e.WPF.EntityViewer.ViewModel.md 'Pf2e\.WPF\.EntityViewer\.ViewModel').[PageNavigationCommand](PageNavigationCommand.md 'Pf2e\.WPF\.EntityViewer\.ViewModel\.PageNavigationCommand') ## PageNavigationCommand\.CanExecuteChanged Event Событие, вызываемое при изменении возможности выполнения команды\. ```csharp public event EventHandler? CanExecuteChanged; ``` Implements [CanExecuteChanged](https://learn.microsoft.com/en-us/dotnet/api/system.windows.input.icommand.canexecutechanged 'System\.Windows\.Input\.ICommand\.CanExecuteChanged') #### Event Type [System\.EventHandler](https://learn.microsoft.com/en-us/dotnet/api/system.eventhandler 'System\.EventHandler')