ASP.NET+ashx+jQuery动态添加删除表格

aspx:

<script src="../script/jquery-1.4.4.min.js" type="text/javascript" language="javascript"></script>
<script language="javascript" type="text/javascript">
        var proID = <%=id %>;
        var flag = 'True';

        $(function(){
            readStage();
        });

        function readStage(){
            $.get(
                'readstage.ashx?ajax=true&random=' + Math.random(),{'proID':proID},
                function(result){
//                var result = [
//                                {"StageName":"Brett","ProName":"McLaughlin","ID":"1"},
//                                {"StageName":"Jason","ProName":"Hunter","ID":"2"},
//                                {"StageName":"Elliotte","ProName":"Harold","ID":"3"}
//                             ];
                    addnewRow(eval(result));
                }
            );
        }

         function addnewRow(values){
            clearRow();
            if(values.length == ){
                var newTr = stageTable.insertRow();
                var newTd1 = newTr.insertCell();
                newTd1.setAttribute("colSpan",);
                newTd1.innerHTML = '暂无数据记录...';
            }

            if(flag == 'True'){
                for(var i = ; i < values.length; i++){
                    //新行
                    var newTr = stageTable.insertRow(i+);
                    //序号
                    var newTd1 = newTr.insertCell();
                    newTd1.innerHTML = i + ;
                    //阶段名称
                    var newTd2 = newTr.insertCell();
                    newTd2.innerHTML = '<label id=' + values[i].StageName + ' type="text" alt="' + values[i].StageName + '" >' + values[i].StageName + '</label>';
                    //所属项目
                    var newTd3 = newTr.insertCell();
                    newTd3.innerHTML = values[i].ProName;
                    //修改
                    var newTd4 = newTr.insertCell();
                    newTd4.innerHTML = "<a href='#' id='edit'" + values[i].ID + "' onclick=\"editStage('" + values[i].ID + "','" + values[i].StageName + "')\">修改</a>";
                    //删除
                    var newTd5 = newTr.insertCell();
                    newTd5.innerHTML = "<a href='#' id='del'" + values[i].ID + "' onclick=\"delStage('" + values[i].ID + "','" + values[i].StageName + "','Del')\">删除</a>";
                }
            }else{
                for(var i = ; i < values.length; i++){
                    //新行
                    var newTr = stageTable.insertRow(i+);
                    //序号
                    var newTd1 = newTr.insertCell();
                    newTd1.innerHTML = i + ;
                    //阶段名称
                    var newTd2 = newTr.insertCell();
                    newTd2.innerHTML = '<label id=' + values[i].StageName + ' type="text" alt="' + values[i].StageName + '" >' + values[i].StageName + '</label>';
                    //所属项目
                    var newTd3 = newTr.insertCell();
                    newTd3.innerHTML = values[i].ProName;
                    //修改
                    var newTd4 = newTr.insertCell();
                    newTd4.innerHTML = "<a href='#' id='edit'" + values[i].ID + "' disabled = 'true' onclick=\"editStage('" + values[i].ID + "','" + values[i].StageName + "')\">修改</a>";
                    //删除
                    var newTd5 = newTr.insertCell();
                    newTd5.innerHTML = "<a href='#' id='del'" + values[i].ID + "' disabled = 'true' onclick=\"delStage('" + values[i].ID + "','" + values[i].StageName + "','Del')\">删除</a>";
                    }

                //隐藏阶段操作条
                document.getElementById('searchtitle').className = 'hidediv';
            }
             $('#stageTable').show();
             //清空hidden
             document.getElementById('hidStageID').value = ;
        }

        //添加阶段
        function addStage(operate){
            var stageName = document.getElementById('txtStageName').value;
            var id = document.getElementById('hidStageID').value;
            if(stageName.length <= ){
                alert('阶段名称不能为空！');
                return;
            }
            $.get(
                'savestage.ashx?ajax=true&random=' + Math.random(),{'proID':proID,'stageName':stageName,'ID':id,'operate':operate},
                function(result){
                    if(result == 'S'){
                        alert('保存成功！');
                        readStage();
                    }
                    else if(result == 'E'){
                        alert('保存失败！');
                    }
                    else if(result == 'M')
                    {
                    alert('修改成功！');
                    readStage();
                    }
                    else
                    {
                    alert('修改失败！');
                    }
                }
            );
        }

        //清除多余的行
        function clearRow(){
            var signFrame = document.getElementById("stageTable");
            var rowscount = signFrame.rows.length;
            //循环删除行,从最后一行往前删除
            for(i=rowscount - ;i >; i--){
             signFrame.deleteRow(i);
            }
        }

        //修改
        function editStage(id,stagename){
            document.getElementById('hidStageID').value = id;
            document.getElementById('txtStageName').value = stagename;
        }

        //删除
        function delStage(id,stageName,operate){
            if(confirm('确定要删除此信息？')){
                $.get(
                'delstage.ashx?ajax=true&random=' + Math.random(),{'proID':proID,'stageName':stageName,'ID':id,'operate':operate},
                function(result){
                    if(result == 'S'){
                        alert('删除成功！');
                        readStage();
                    }else{
                        alert('删除失败！');
                    }
                });
            }
        }

        function delMsg()
        {
            if(confirm('确定删除此项？'))
            {
                $.get("delproject.ashx?ajax=true&random="+Math.random(),{"proID":proID},
                function(result){
                if(result == 'S')
                {
                    alert('删除成功！');
                    window.location="projectlist.aspx";
                }
                else
                {
                    alert('删除失败！');
                }
                });
            }
        }  

    </script>

<div id="searchtitle">
<table width="66%"  style="margin-top:10px" border="" cellpadding="" cellspacing="">
  <tr>
       <td width="23%">阶段名称：<asp:TextBox ID="txtStageName" runat="server" class="input"></asp:TextBox></td>
       <td style="padding-left:10px" align="left"><input id="btnPost" type="button" value="保存" class="button" onclick="addStage('Add&Edit')"/></td>
  </tr>
</table>
</div>
    <asp:HiddenField ID="hidStageID" runat="server" />
<table border=""  id="stageTable" class="infolist" style="width:65%; margin-left:0" cellpadding="" cellspacing="">
      <thead>
          <tr>
              <th width="10%">序号</th>
              <th width="25%">阶段名称</th>
              <th>所属项目</th>
              <th style="border-right:1px solid #999999;" colspan="" width="20%">操作</th>
          </tr>
      </thead>
      <tbody>
      </tbody>
</table>

readstage.ashx:

public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            //context.Response.Write("Hello World");
            int projectID = Convert.ToInt32(context.Request["proID"]);
            //PM.BLL.tb_Stage stagebll = new PM.BLL.tb_Stage();
            //DataSet ds = stagebll.GetList(" ProjectID="+projectID);
            //context.Response.Write(ds);
            StringBuilder sb = new StringBuilder();
            string sql = "select * from tb_Stage where ProjectID="+projectID;
            DataSet ds = PM.DBUtility.DbHelperSQL.Query(sql);
            sb.Append("[");
            for (int i = ; i < ds.Tables[].Rows.Count; i++)
            {
                sb.Append("{");
                string stagename = ds.Tables[].Rows[i]["StageName"].ToString();
                sb.Append("\"StageName\":\"" + stagename + "\"");
                sb.Append(",");
                string proname = returnProName(ds.Tables[].Rows[i]["ProjectID"].ToString());
                sb.Append("\"ProName\":\"" + proname + "\"");
                sb.Append(",");
                string id = ds.Tables[].Rows[i]["StageID"].ToString();
                sb.Append("\"ID\":\"" + id + "\"");
                sb.Append("}");
                if (i != ds.Tables[].Rows.Count - )
                {
                    sb.Append(",");
                }
            }
            sb.Append("]");
            context.Response.Write(sb);
        }

        public string returnProName(string proid)
        {
            string str = new PM.BLL.tb_Project().GetModel(int.Parse(proid)).ProjectName;
            return str;
        }

savestage.ashx:

public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            //context.Response.Write("Hello World");
            string stageName = context.Request["stageName"];
            int projectId = Convert.ToInt32(context.Request["proID"]);
            string operate = context.Request["operate"];
            int id = Convert.ToInt32(context.Request["ID"]);
            PM.Model.tb_Stage stagemod = new PM.Model.tb_Stage();
            stagemod.StageName = stageName;
            stagemod.ProjectID = projectId;
            stagemod.StageID = id;

            PM.BLL.tb_Stage stagebll = new PM.BLL.tb_Stage();
            if (id == )
            {
                int i = stagebll.Add(stagemod);
                if (i > )
                {
                    context.Response.Write("S");//保存成功
                }
                else
                {
                    context.Response.Write("E");//保存失败
                }
            }
            else
            {
                bool j = stagebll.Update(stagemod);
                if (j == true)
                {
                    context.Response.Write("M");//修改成功
                }
                else
                {
                    context.Response.Write("ME");//修改失败
                }
            }
        }

delstage.ashx:

public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            //context.Response.Write("Hello World");
            int stageId = Convert.ToInt32(context.Request["ID"]);
                    PM.BLL.tb_Stage stagebll = new PM.BLL.tb_Stage();
                    bool res = stagebll.Delete(stageId);
                    if (res == true)
                    {
                        context.Response.Write("S");
                    }
                    else
                    {
                        context.Response.Write("E");
                    }
        }