A boolean expression that specifies whether the control's header is enabled or
disabled.
By default, the HeaderEnabled property is True. The
HeaderEnabled property enables or disables the control's header (including the control's sort/groupby-bar).
If the header is disabled, the user can't resize, sort or drag and drop any column. Also,
if the header is disabled, the control's sort/groupby-bar is disabled as well.
The HeaderVisible property shows or
hides the control's header. The SortBarVisible
property shows or hides the control's sort/groupby-bar.
