Controlling the Visibility of Columns

The following mouse operations allow end-users to change the visibility of columns.

Action	Effect
Selecting the “ Runtime Column Customization “ item from the context menu.	Invokes the Customization Form.
Dragging a column header onto the Customization Form	Hides the corresponding column.
Dragging a column header from the Customization Form onto the column header panel	Makes the corresponding column visible.

Notes :

A column can only be moved to the Customization Form if its TreeListOptionsColumn.AllowMove option is enabled.
If a column’s TreeListOptionsColumn.ShowInCustomizationForm option is disabled, the column’s header is not displayed within the Customization Form when it is dropped onto it. Thus, end-users cannot make the column visible again.