Gets or sets the index of the tab currently selected in the Design Panel.
An integer value which represents the index of the currently selected tab.
Use the SelectedTabIndex property, to obtain the active tab, or switch tabs in an XRDesignPanel. By default, the Design Panel's tabs correspond to the following indexes.
0. Design tab. Displays the report's design surface.
1. Preview tab. Displays the report's Print Preview.
2. HTML View tab. Displays the report's HTML preview.
3. Scripts tab. Used to maintain the report's scripts.
After modifying the SelectedTabIndex property, the XRDesignPanel.SelectedTabIndexChanged event is raised.