注意两点：
1.要将gridview的AllowSorting属性置为true，同时设置OnSorting事件

2.在OnSorting事件中对排序的列设定SortExpression属性

            }
            //绑定信息
            BindNodeInfo();
        }

        public void BindNodeInfo()
        {
            NodeLogic log = new NodeLogic();
            DataSet myset = log.GetNodeInfo();     //获取数据源
            DataView myview = myset.Tables[0].DefaultView;
            myview.Sort = ViewState[\"sortExpression\"].ToString() +\" \"+ ViewState[\"sort\"].ToString();
            this.NodeGridView.DataSource = myview;
            NodeGridView.DataKeyNames = new string[] { \"node_id\" };               //设置主键字段
            NodeGridView.DataBind();                                                  //绑定GridView控件 
        }

        protected void NodeGridView_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            this.NodeGridView.PageIndex = e.NewPageIndex;
            BindNodeInfo();
        }

        protected void NodeGridView_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            // 自动给第一列编号
            if (e.Row.RowIndex > -1)
            {
                e.Row.Cells[0].Text = Convert.ToString(e.Row.RowIndex + 1);
            }
        }

        protected void NodeGridView_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            NodeLogic log = new NodeLogic();
            int id = int.Parse(this.NodeGridView.DataKeys[e.RowIndex].Values[0].ToString());
            if (log.DeleteNodeInfo(id))
            {
                this.Page.ClientScript.RegisterStartupScript(this.GetType(), \"\", \"alert(\'删除成功！\');\", true);
            }
            else
                this.Page.ClientScript.RegisterStartupScript(this.GetType(), \"\", \"alert(\'删除失败！\');\", true);
            //重新更新数据显示
            BindNodeInfo();
        }

        protected void NodemGridView_RowEditing(object sender, GridViewEditEventArgs e)
        {

        }

        protected void AddNode_Click(object sender, EventArgs e)
        {
            Response.Redirect(\"AddNode.aspx\");
        }

        protected void NodeGridView_Sorting(object sender, GridViewSortEventArgs e)
        {

            if (ViewState[\"sortExpression\"] != null)
            {
                if (ViewState[\"sort\"].ToString() == \"Asc\")
                {
                    ViewState[\"sort\"] = \"Desc\";
                }
                else
                {
                    ViewState[\"sort\"] = \"Asc\";

                }
            }
            BindNodeInfo();
        }