Error using ExpandALL / CollapseALL

[Patrick.O.Ige]

Hi All
i'm getting error with my TreeView Menu(I want to have a button with
ExpandALL and CollapseALL):-
I'M USING TREEVIEW WEB CONTROL POPULATING TREENODES WITH XML FILE!
Error:-
'AddressOf' operand must be the name of a method; no parentheses are needed.

I use VB.Net and i changed the C# code from:-
private void ExpandAll()
{
for(int i=0; i < yourTree.Nodes.Count; i++)
{
yourTree.Nodes.Expanded = true;
}
}
TO

Public Sub ExpandAll()
Dim i As Integer
For i = 0 To tvFamilyTree.Nodes.Count - 1 Step i + 1
tvFamilyTree.Nodes(i).Expanded = True
Next
End Sub

And called ExapndAll in page load
And on my ASP.NET page called it like this:-
<asp:Button BorderColor=#009966 Runat=server
OnClick="ExpandAll()"></asp:Button>

Can u telling me what 'm doing wrong!!
Thx