The ColumnsFloatBarVisible property indicates whether the control displays a floating panel that shows the hidden columns, so the user can drag and drop columns on order to show or hide the columns from the control. Use the ColumnsFloatBarSortOrder property to sort the columns to be displayed in the columns floating panel. 

The floating panel displays the following columns:

• hidden columns, so the Visible property is False.
• drag able column, so the AllowDragging property is True.

In other words, the AllowDragging property may be used to choose if a hidden column is displayed in the floating bar. The control fires the LayoutChanged event as soon as a new column is drop on the control's header, sort or group-by bar. The Description(exColumnsFloatBar) property indicates the text to be displayed on the caption of the floating bar. The Background(exColumnsFloatAppearance) property specifies the visual appearance of the floating panel's frame.

The following screen shot shows the control's Columns float bar:

The following movies show how ColumnsFloatBarVisible works: 

• The ColumnsFloatBarVisible property is used to show or hide columns by drag and drop

• The movie shows how you can customize the visual appearance of the control's Columns floating bar