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How to find the control which is currently active in tabbed group?

Platform: WinForms |
Control: DockingManager |
Published Date: April 30, 2011 |
Last Revised Date: July 10, 2014


DockTabControl has an event which name is SelectedIndexChanged can give the details about the currently active control in the DockTabbedGroup. DockTabControl has the SelectedTab property which give the current active control in the group.

The following code snippet explain the above concept,


private void dockTabControl_SelectedindexChanging (object sender, EventArgs e)


if(sender is DockTabControl){

DockTabControl tabcontrol = sender as DockTabControl;

string str = (string)tabcontrol.Tag;

//Checks whether the DockTabControl.Tag is left or right.

if(tabcontrol.SelectedTab !=null)

if (str == "left")

Console.WriteLine("Selected Control on the left : " + tabcontrol.SelectedTab.Text);


Console.WriteLine("Selected Control on the right : " + tabcontrol.SelectedTab.Text);





Private Sub dockTabControl_SelectedindexChanging(ByVal sender As Object, ByVal e As EventArgs)

If TypeOf sender Is DockTabControl Then

Dim tabcontrol As DockTabControl = CType(IIf(TypeOf sender Is DockTabControl, sender, Nothing), DockTabControl)

Dim str As String = CStr(tabcontrol.Tag)

'Checks whether the DockTabControl.Tag is left or right.

If Not tabcontrol.SelectedTab is Nothing Then

If str = "left" Then

Console.WriteLine("Selected Control on the left : " & tabcontrol.SelectedTab.Text)


Console.WriteLine("Selected Control on the right : " & tabcontrol.SelectedTab.Text)

End If

End If

End If

End Sub

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