默认选中TreeView某个节点的方法

    /**//// <summary>
    /// 选中treeview的某个节点，需要每个node的value不同
    /// </summary>
    /// <param name="sNodeValue"></param>
    private void checkNode(TreeView tv,string sNodeValue)
    {
        foreach (TreeNode tRoot in tv.Nodes)
        {
            if (tRoot.Value == sNodeValue)
            {
                tRoot.Select();
            }
            else
            {
                if (tRoot.ChildNodes != null)
                {
                    foreach (TreeNode tChild in tRoot.ChildNodes)
                    {
                        if (tChild.Value == sNodeValue)
                            tChild.Select();
                    }
                }
            }
        }
    }