Listing 10

Public Class MultiLangDesginTime Inherits ControlDesigner
  Public Overloads Overrides Function GetDesignTimeHtml() As String
  Return "<span style='font-family:Verdana;font-size:10pt'>[ MultiLang Design-Time
  ]</span>"
  End Function
End Class

Multi-language custom control has as Design-Time class as you see in Figure 6. So nothing will be visible at design-time, which makes designing the page much easier. As you saw in Listing 1, we are assigning the Design-Time class by Designer(GetType(Class Name)) attribute typically over the CustomMultiLang class.

Figure 6