Parent/Child Hierarchy Treeview Example - Parser error

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.NET2.0

C#

.NET

treeview

Hi,
When i download your code and added it to my page, i first get this error:
"the name 'treeView' does not exist in the current context", which is caused by this section of code. Is there a declaration missing in the code example?

private void CommonLoad()
{
  PopulateTree(treeView);
}

I tried fixing it by changing the code to this:

private void CommonLoad()
       {
           PopulateTree(new TreeView());
       }

Then i get the following error on the web. Any ideas?

Parser Error Message: The base class includes the field 'VTSTreeView1', but its type (VTS.Web.UI.ParentChildTreeView) is not compatible with the type of control (ASP.controls_parentchildtreeview_ascx).

Source Error:

Line 103:       <form id="form1" runat="server">
Line 104:            <div id="divNavigation" >
Line 105:               <ucl:VTSTreeView id="VTSTreeView1" runat="server" />
Line 106:
Line 107:            </div>