/// <summary>
/// 分页控件回调函数
/// </summary>
/// <param name="pageNo">页码，由分页控件传入</param>
/// <param name="pageSize">每页记录数</param>
/// <returns></returns>
private void LoadPageData(int pageNo, int pageSize)
{
List <MyTreeNode> treeRootNodes = MyTrees.GetTreeRootNodes(pageNo, pageSize);
TreeViewItem rootItem = memberTreeView.Items[0] as TreeViewItem;
rootItem.Items.Clear();
if (rootItem != null && treeRootNodes.Count > 0)
{
for (int i = 0; i < treeRootNodes.Count; i++)
{
TreeViewItem subItem = NewTreeViewItem(treeRootNodes[i]);
rootItem.Items.Add(subItem);
//如果还有子节点，则添加一个节点，使该节点具有折叠的"+"
subItem.Items.Add(NewTreeViewItem(null));
}
}
}
