TreeView::OnBeforeSelect Method (TreeViewCancelEventArgs^)
.NET Framework (current version)
Raises the BeforeSelect event.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Parameters
- e
-
Type:
System.Windows.Forms::TreeViewCancelEventArgs^
A TreeViewCancelEventArgs that contains the event data.
Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.
The OnBeforeSelect method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to Inheritors:
When overriding OnBeforeSelect in a derived class, be sure to call the base class's OnBeforeSelect method so that registered delegates receive the event.
.NET Framework
Available since 1.1
Available since 1.1
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