Displaying specific project's form in solution for selected treeview node in vb.net

Hello,

I've similar topic before and find a solution with help of friends in following topic.

Displayin specific UserControl for selected node in vb.net

https://www.experts-exchange.com/questions/29142992/Displayin-specific-UserControl-for-selected-node-in-vb-net.html

Dim controls = GetType(GUI).Assembly.GetTypes.Where(Function(t) t.BaseType.Equals(GetType(UserControl)))
For Each element in treToolNavigation.Nodes.Cast(Of TreeNode)
    element.Tag = controls.FirstOrDefault(Function(t) t.Name.StartsWith(element.Text))
Next

Select allOpen in new window

And this is after node sleect event to show selected user control.

    Private Sub ToolNavigationAfterSelect(sender As Object, e As TreeViewEventArgs) Handles treToolNavigation.AfterSelect

        For Each ctrl As Control In IndexModuleTools.Panel2.Controls.Cast(Of Control).Reverse()
            ctrl.Dispose()
            IndexModuleTools.Panel2.Controls.Remove(ctrl)
        Next
        Dim dynType As Type = CType(e.Node.Tag, Type)
        Dim instance As Control = CType(Activator.CreateInstance(dynType), Control)
        instance.Dock = DockStyle.Fill
        IndexModuleTools.Panel2.Controls.Add(instance)
        instance.Show()
    End Sub

--- NOW --- i'd like to show Windows.Forms of another project which is included my solution but i don't know how it would be possible?

Any helps would be grateful.