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How to find out if a control is in a tabbed dock group in WinForms Docking Manager?

Platform: WinForms |
Control: DockingManager

Dock group

There is no direct API to determine the tabbed state, but this can be easily accomplished by accessing some of the internal docking windows classes. The following code tests whether the dockable control ’listBox1’ is in a tabbed dock group, and if so, lists out all controls in that group.


Syncfusion.Windows.Forms.Tools.DockHost dhost = this.listBox1.Parent as Syncfusion.Windows.Forms.Tools.DockHost;
Syncfusion.Windows.Forms.Tools.DockHostController dhc = dhost.InternalController as
if(dhc.ParentController is Syncfusion.Windows.Forms.Tools.DockTabController)
   Trace.WriteLine("Control is docked as a tab");
   Syncfusion.Windows.Forms.Tools.DockTabControl docktab = (dhc.ParentController as
   foreach(DockTabPage tabpage in docktab.TabPages)
      Control siblingcontrol = tabpage.dhcClient.HostControl.Controls[0];



Dim dhost As Syncfusion.Windows.Forms.Tools.DockHost = Me.listBox1.Parent as
Dim dhc As Syncfusion.Windows.Forms.Tools.DockHostController = dhost.InternalController as
If TypeOf dhc.ParentController Is Syncfusion.Windows.Forms.Tools.DockTabController Then
   Trace.WriteLine("Control is docked as a tab")
   Dim docktab As Syncfusion.Windows.Forms.Tools.DockTabControl = (dhc.ParentController as
   Dim tabpage As DockTabPage
   For Each tabpage In docktab.TabPages
       Dim siblingcontrol As Control = tabpage.dhcClient.HostControl.Controls(0)
End If


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