[2005] A element of a User Control as a Property

[sagoga69]

Hello everybody!

I am having some problems developing a user control.

The control I'm developing is a control that has 4 buttons and a treeview.

I want the developer who uses the control to be able to change de treeview properties. I have read in the internet, that I can set a "sub-control" of a user control as a property of the user control.

So, in my control, I have two properties:

<Description("Toma o establece el color de fondo de los botones del control")> _
    Property ColorBotones() As Color
        Get
            Return B_Arriba.BackColor
        End Get
        Set(ByVal value As Color)
            B_Arriba.BackColor = value
            B_Abajo.BackColor = value
            B_Izquierda.BackColor = value
            B_Derecha.BackColor = value
        End Set
    End Property

    <Description("Toma o establece el control TreeView")> _
    Property Arbol() As TreeView
        Get
            Return TV_Arbol
        End Get
        Set(ByVal value As TreeView)
            TV_Arbol = value
        End Set
    End Property

ColorBotones is used to change the backcolor of the four buttons (B_Arriba, B_Abajo, B_Izquierda, B_Derecha).
Arbol() should be used to change the properties of the treeview of the user control.

The ColorBotones proporty works perfectly, but Arbol() doesn't. In the designer view, I (the developer) can see the two properties correctly, but the changes I do in the Arbol property only changes the appearance in the designer view. When I execute the form that contains the usercontrol, all the changes I have done in the designer view disappear.

Does anybody know where's the problem?

Thanks in advance