Catel.LogAnalyzer.Behaviors.DropFileBehavior.CommandPropertyChangedCallBack C# (CSharp) Метод

        private static void CommandPropertyChangedCallBack(
            DependencyObject inDependencyObject, DependencyPropertyChangedEventArgs inEventArgs)
        {
            var uiElement = inDependencyObject as UIElement; // Remove the handler if it exist to avoid memory leaks
            if (uiElement != null)
            {
                uiElement.Drop -= UIElement_Drop;
            }

            var command = inEventArgs.NewValue as ICommand;
            if (command == null)
            {
                return;
            }
            // the property is attached so we attach the Drop event handler
            if (uiElement != null)
            {
                uiElement.Drop += UIElement_Drop;
            }
        }