When the TabIndex is set on the UltraWebToolbar element, it percolates down to individual Toolbar items and serves as the "base" tab index.
As the "base" tab index, setting this property to a non-negative value causes it to be added to all individual Toolbar item's tab order attribute when they are rendered. For instance, if a developer sets this TabIndex to 100, and they have three buttons with individual TabIndex settings of 1, 2, and 3, then at render-time the Toolbar's items will have tab orders of 101, 102, and 103. This property can be used to quickly move all toolbar items ahead of, or behind, other web form elements in the tab order with one setting.
Developers should still set the TabIndex on individual items to customize the order in which they are tabbed to when the end user presses the TAB key. Tab order by default will be from left-to-right as the Toolbar items are rendered in document order.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2