How to assign task for ToolStrip item when it is clicked in WinForms RibbonControlAdv?

private void toolStripEx1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
    switch (e.ClickedItem.Text as string)
    {
        case "toolStripLabel1":
                e.ClickedItem.ForeColor = Color.Red ;
                break;
        case "toolStripSplitButton1":
                e.ClickedItem.DisplayStyle = ToolStripItemDisplayStyle.ImageAndText;
                break;
    }
}

Private Sub toolStripEx1_ItemClicked(ByVal sender As Object, ByVal e As ToolStripItemClickedEventArgs)
    Select CType(ConversionHelpers.AsWorkaround(e.ClickedItem.Text, GetType(String)), String)
        Case "toolStripLabel1"
                 e.ClickedItem.ForeColor = Color.Red
                 break
        Case "toolStripSplitButton1"
                 e.ClickedItem.DisplayStyle = ToolStripItemDisplayStyle.ImageAndText
                 break
    End Select
End Sub