private void AddArea_Click(object sender, System.EventArgs e)
{
Area area = new Area( );
area.Parent = TestTreeView.GetNodeFromIndex(TestTreeView.SelectedNodeIndex).ID;
area.Name = AreaNameToAdd.Text;
dbConnection.AddArea(area);
PopulateTreeview( );
AreaInfoPanel.Visible = false;
TestEditPanel.Visible = false;
}