Skip to main content
A newer version of this page is available. .

WindowsUIView.QueryStartupContentContainer Event

Fires at the WindowsUIView application start-up.

Namespace: DevExpress.XtraBars.Docking2010.Views.WindowsUI

Assembly: DevExpress.XtraBars.v19.1.dll


public event QueryContentContainerEventHandler QueryStartupContentContainer

Event Data

The QueryStartupContentContainer event's data class is DevExpress.XtraBars.Docking2010.Views.WindowsUI.QueryContentContainerEventArgs.


WindowsUIView applications’ hierarchy can consist of multiple Content Containers. By default, on the application start-up, the topmost container (a container whose Parent property is null) is displayed. If there are multiple topmost containers in a single application (like ‘tileContainer1’ and ‘page1’ in the figure below), the first container will be initially shown.

Metro Getting Started - AppTree Hierarchy 3

Handle the QueryStartupContentContainer event, which is fired whenever a WindowsUIView application starts, to manually set the initially displayed Content Container. To do so, assign a required container to the QueryContentContainerEventArgs.ContentContainer property as shown below:

private void WindowsUIView1_QueryStartupContentContainer(object sender, DevExpress.XtraBars.Docking2010.Views.WindowsUI.QueryContentContainerEventArgs e) {
    if (. . .) e.ContentContainer = tileContainer1;
    else e.ContentContainer = pageGroup1;
See Also