addInternalColumnSelectionChangingHandler Method

An pre column selection changing event, for use by the column resizing so that I can stop the selection behavior from removing my selected columns when doing a resize

Syntax

ASP.NET Ajax Javascript (Specification)
function addInternalColumnSelectionChangingHandler(    handler : Function ) : (Any);

ASP.NET Ajax Javascript (Usage)
var resultVar = instanceOfISelectionBehavior.addInternalColumnSelectionChangingHandler(Function);