public bool tvKnowledgeNodeMove(int knowledgeId, string direction) { KnowledgeBLL knowledgeBLL = new KnowledgeBLL(); if (direction.ToUpper() == "UP") { return(knowledgeBLL.MoveUp(knowledgeId)); } else if (direction.ToUpper() == "DOWN") { return(knowledgeBLL.MoveDown(knowledgeId)); } else { SessionSet.PageMessage = "未知移动方向!"; } return(false); }