NGWS SDK Documentation  

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TreeView.AddOnBeforeSelect

Adds an event handler for the "beforeSelect" event notification. The onBeforeSelect event is fired when the user attempts to select a node. The event can be cancelled by the handler, in which case the node won't be selected.

[Visual Basic]
Public Sub AddOnBeforeSelect( _
   ByVal handler As TreeViewCancelEventHandler _
)
[C#]
public void AddOnBeforeSelect(
   TreeViewCancelEventHandler handler
);
[C++]
public: void AddOnBeforeSelect(
   TreeViewCancelEventHandler* handler
);
[JScript]
public function AddOnBeforeSelect(
   handler : TreeViewCancelEventHandler
);

Parameters

handler
The event handler to install.

See Also

TreeView Class | TreeView Members | System.WinForms Namespace