Tab Selection in Windows Forms Tabbed Form (SfTabbedForm)

29 Apr 2021 / 2 minutes to read

Tab selection can be done programmatically using the TabbedFormControl.SelectedIndex or TabbedFormControl.SelectedTab properties.

this.tabbedFormControl.SelectedIndex = 1;


this.tabbedFormControl.SelectedTab = tabPageAdv2;
Me.tabbedFormControl.SelectedIndex = 1


Me.tabbedFormControl.SelectedTab = tabPageAdv2

Winforms showing applied the selection in  Tabbed form


SelectedIndexChanging event

The SelectedIndexChanging event occurs when changing the SelectedIndex or SelectedTab of the TabbedFormControl. The SelectedIndexChangingEventArgs properties provide information specific to this event. Tab selection can be restricted by setting args.Cancel to true.

this.tabbedFormControl.SelectedIndexChanging += TabbedFormControl_SelectedIndexChanging;

private void TabbedFormControl_SelectedIndexChanging(object sender, SelectedIndexChangingEventArgs args)
    if (this.tabbedFormControl.SelectedIndex == 2)
        args.Cancel = true;
Private Me.tabbedFormControl.SelectedIndexChanging += AddressOf TabbedFormControl_SelectedIndexChanging

Private Sub TabbedFormControl_SelectedIndexChanging(ByVal sender As Object, ByVal args As SelectedIndexChangingEventArgs)
	If Me.tabbedFormControl.SelectedIndex = 2 Then
		args.Cancel = True
	End If
End Sub

SelectedIndexChanged event

The SelectedIndexChanged event occurs when the SelectedIndex or SelectedTab of the TabbedFormControl is changed.

this.tabbedFormControl.SelectedIndexChanged += TabbedFormControl_SelectedIndexChanged;

private void TabbedFormControl_SelectedIndexChanged(object sender, EventArgs e)
    var tabs = tabbedFormControl.Tabs.OfType<TabPageAdv>();
    foreach (var tab in tabs)
        if (this.tabbedFormControl.SelectedTab == tab)
            Console.WriteLine("Selected Tab:" + tab.Text);
Private Me.tabbedFormControl.SelectedIndexChanged += AddressOf TabbedFormControl_SelectedIndexChanged

Private Sub TabbedFormControl_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs)
	Dim tabs = tabbedFormControl.Tabs.OfType(Of TabPageAdv)()
	For Each tab In tabs
		If Me.tabbedFormControl.SelectedTab Is tab Then
			Console.WriteLine("Selected Tab:" & tab.Text)
		End If
	Next tab
End Sub