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 End-User Documentation

LayoutControl.GroupExpandChanging Event

Fires when a layout group is about to be expanded or collapsed.

Namespace:DevExpress.XtraLayout
Assembly:DevExpress.XtraLayout.v17.1.dll

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type DevExpress.XtraLayout.Utils.LayoutGroupCancelEventArgs containing data related to this event.

The following LayoutGroupCancelEventArgs properties provide information specific to this event.
Property Description
Cancel

Expanded Remarks

The GroupExpandChanging event is raised when a Layout Groups's expanded state is about to be changed. This occurs when an end-user attempts to expand/collapse the group or the value of its LayoutGroup.Expanded property is being changed in code.

The processed layout group is identified by the event's Group parameter. The Cancel parameter controls whether the operation is allowed. To prevent the layout group from being expanded/collapsed, set the Cancel parameter to true.

Expanded See Also

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