This override initializes the Connection property if it has not already been initialized, and calls the base class implementation of OnLoad. The Connection property may not have been initialized already if the data provider is added dynamically to the page, since the preferred time to initialize the Connection property was in the Init event of the Page (and when the data provider is dynamically added to the page late, that point in time may have already passed.)
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