2 writes to _onBeforeCollapse
System.Windows.Forms (2)
System\Windows\Forms\Controls\TreeView\TreeView.cs (2)
1379add => _onBeforeCollapse += value; 1380remove => _onBeforeCollapse -= value;
1 reference to _onBeforeCollapse
System.Windows.Forms (1)
System\Windows\Forms\Controls\TreeView\TreeView.cs (1)
2145_onBeforeCollapse?.Invoke(this, e);