#### [Pf2e\.Scrapper](index.md 'index')
### [Pf2e\.Scrapper\.WPF\.EntityViewer\.EntityViewStructure](Pf2e.Scrapper.WPF.EntityViewer.EntityViewStructure.md 'Pf2e\.Scrapper\.WPF\.EntityViewer\.EntityViewStructure').[CollapseCommand](CollapseCommand.md 'Pf2e\.Scrapper\.WPF\.EntityViewer\.EntityViewStructure\.CollapseCommand')

## CollapseCommand\.CanExecuteChanged Event

Событие, вызываемое при изменении возможности выполнения команды\.

```csharp
public event EventHandler? CanExecuteChanged;
```

Implements [CanExecuteChanged](https://docs.microsoft.com/en-us/dotnet/api/System.Windows.Input.ICommand.CanExecuteChanged 'System\.Windows\.Input\.ICommand\.CanExecuteChanged')

#### Event Type
[System\.EventHandler](https://docs.microsoft.com/en-us/dotnet/api/System.EventHandler 'System\.EventHandler')