转：利用jquery+repeater实现AJAX化的DataList

虽然说微软的DataList相当强大 但是由于需要使用VIEWSTATE 并且一个简单的操作就必须刷新页面 所以决定在项目中使用JQUERY来达到ajax化的DataList

当然数据绑定控件还是需要有的 此处仅需要repeater来做到数据绑定 其余部分均使用html控件来完成

主要思路：通过对DataList的观察 发现他也只是给各个控件加一个具体的ID 比如说第一行的INPUT ID即为DataList的ID+自增的ID 如此一来我们的repeater改造成AJAX化的DataList便有了思路 只要给TABLE中每一行加一个独有的ID便可以取到该行内的任何控件

以下为代码：

js部分（使用的jquery版本为1.4.2）：

<script>
        $(document).ready(function() {
            $("table tr:odd").css("background-color", "#99ccff");
            $(".edit").click(function() {
                var id = $(this).attr("id");
                if ($(this).val() == "修改") {
                    $(this).attr("value", "提交");
                    $(this).next().removeClass();
                    $("." + id).find("input").removeClass().addClass("textbox");
                }
                else {
                    if (confirm("你确信要提交吗？")) {
                        var lv = $("#LV" + id).find("input").val();
                        var location = $("#LOCATION_NO" + id).find("input").val();
                        var amount = $("#AMOUNT" + id).find("input").val();
                        var inventory = $("#INVENTORY" + id).find("input").val();
                        var head_length = $("#HEAD_LENGTH" + id).find("input").val();
                        var uniformity = $("#UNIFORMITY" + id).find("input").val();
                        var strength = $("#STRENGTH" + id).find("input").val();
                        var macronaire = $("#MACRONAIRE" + id).find("input").val();
                        var reflectivity = $("#REFLECTIVITY" + id).find("input").val();
                        var yellowness = $("#YELLOWNESS" + id).find("input").val();
                        var price = $("#PRICE" + id).find("input").val();
                        $.ajax({
                            url: "ajaxmethod.asmx/AJAXEditCottonInfo",
                            type: "POST",
                            contentType: "application/json; charset=utf-8",
                            dataType: "json",
                            data: "{id:" + id + ",lv:'" + lv + "',location_no:'" + location + "',bag_amount:" + amount + ",inventory:" + inventory + ",head_length:" + head_length +
                 ",uniformity:" + uniformity + ",strength:" + strength + ",macronaire:" + macronaire + ",reflectivity:" + reflectivity + ",yellowness:" + yellowness + ",price:" + price + "}",
                            success: done
                        });
                        $(this).attr("value", "修改");
                        $(this).next().addClass("cancel");
                        $("." + id).find("input").removeClass().addClass("cancel");
                    }
                }
            })
            function done(data) {
                var result = eval('(' + data.d + ')');
                if (result.data == "F") {
                    alert("您无权进行此操作");
                }
                else {
                    var id = result.id;
                    $("#LastEdit" + id).find("b").text(result.date);
                    $("#LV" + id).find("b").text(result.lv);
                    $("#LOCATION_NO" + id).find("b").text(result.location);
                    $("#AMOUNT" + id).find("b").text(result.amount);
                    $("#INVENTORY" + id).find("b").text(result.inventory);
                    $("#HEAD_LENGTH" + id).find("b").text(result.head_length);
                    $("#UNIFORMITY" + id).find("b").text(result.uniformity);
                    $("#STRENGTH" + id).find("b").text(result.strength);
                    $("#MACRONAIRE" + id).find("b").text(result.macronaire);
                    $("#REFLECTIVITY" + id).find("b").text(result.reflectivity);
                    $("#YELLOWNESS" + id).find("b").text(result.yellowness);
                    $("#PRICE" + id).find("b").text(result.price);
                }
            }
            $(".edit").next().click(function() {
                $(this).addClass("cancel");
                $(this).prev().attr("value", "修改");
                var id = $(this).prev().attr("id");
                $("." + id).find("input").removeClass().addClass("cancel");
            })
        });
    </script>

css部分：

<style>
     .cancel
     {
      display:none;
      0;
     }
     .textbox
     {
      70px;
     }
    </style>

html部分（数据源为自己写的分页用户控件 有一个属性为CommandText 设定该属性便可执行相应的SQL语句并将返回的DataTable作为控件的数据源）：

<form id="form1" runat="server">
      <asp:Repeater runat="server" ID="RCottonList">
        <HeaderTemplate>
          <table  cellpadding="0" cellspacing="0" border="1" width="1000">
            <thead>
              <tr>
                <td colspan="14"><center>原棉信息列表</center></td>
              </tr>
            </thead>
            <tbody>
              <tr>
                <td>库存批号</td>
                <td>最后修改时间</td>
                <td>等级代号</td>
                <td>产地与批号</td>
                <td>包数</td>
                <td>库存(吨)</td>
                <td>上半部长度</td>
                <td>整齐度</td>
                <td>断裂比强度</td>
                <td>马克隆值</td>
                <td>反射率</td>
                <td>黄度</td>
                <td>单价(万元/顿)</td>
                <td width="100">操作</td>
              </tr>
        </HeaderTemplate>
        <ItemTemplate>
           <tr>
             <td class="<%#DataBinder.Eval(Container.DataItem,"ID") %>"><%#DataBinder.Eval(Container.DataItem,"ID") %></td>
             <td class="<%#DataBinder.Eval(Container.DataItem,"ID") %>" id="LastEdit<%#DataBinder.Eval(Container.DataItem,"ID") %>"><b><%#DataBinder.Eval(Container.DataItem,"LastEdit") %></b></td>
             <td class="<%#DataBinder.Eval(Container.DataItem,"ID") %>" id="LV<%#DataBinder.Eval(Container.DataItem,"ID") %>">
               <b><%#DataBinder.Eval(Container.DataItem,"LV") %></b>
               <input type="text" class="cancel" value="<%#DataBinder.Eval(Container.DataItem,"LV" )%>"/>
             </td>
             <td class="<%#DataBinder.Eval(Container.DataItem,"ID") %>" id="LOCATION_NO<%#DataBinder.Eval(Container.DataItem,"ID") %>">
               <b><%#DataBinder.Eval(Container.DataItem,"LOCATION_NO") %></b>
               <input type="text" class="cancel" value="<%#DataBinder.Eval(Container.DataItem,"LOCATION_NO") %>" />
             </td>
             <td class="<%#DataBinder.Eval(Container.DataItem,"ID") %>" id="AMOUNT<%#DataBinder.Eval(Container.DataItem,"ID") %>">
               <b><%#DataBinder.Eval(Container.DataItem,"BAG_AMOUNT") %></b>
               <input type="text" class="cancel" value="<%#DataBinder.Eval(Container.DataItem,"BAG_AMOUNT") %>" />
             </td>
             <td class="<%#DataBinder.Eval(Container.DataItem,"ID") %>" id="INVENTORY<%#DataBinder.Eval(Container.DataItem,"ID") %>">
               <b><%#Convert.ToSingle( DataBinder.Eval(Container.DataItem,"INVENTORY")).ToString("F2") %></b>
               <input type="text" class="cancel" value="<%#Convert.ToSingle( DataBinder.Eval(Container.DataItem,"INVENTORY")).ToString("F2") %>" />
             </td>
             <td class="<%#DataBinder.Eval(Container.DataItem,"ID") %>" id="HEAD_LENGTH<%#DataBinder.Eval(Container.DataItem,"ID") %>">
               <b><%#Convert.ToSingle(DataBinder.Eval(Container.DataItem, "HEAD_LENGTH")).ToString("F2")%></b>
               <input type="text" class="cancel" value="<%#Convert.ToSingle( DataBinder.Eval(Container.DataItem,"HEAD_LENGTH")).ToString("F2") %>" />
             </td>
             <td class="<%#DataBinder.Eval(Container.DataItem,"ID") %>" id="UNIFORMITY<%#DataBinder.Eval(Container.DataItem,"ID") %>">
               <b><%#Convert.ToSingle(DataBinder.Eval(Container.DataItem, "UNIFORMITY")).ToString("F2")%></b>
               <input type="text" class="cancel" value="<%#Convert.ToSingle( DataBinder.Eval(Container.DataItem,"UNIFORMITY")).ToString("F2") %>" />
             </td>
             <td class="<%#DataBinder.Eval(Container.DataItem,"ID") %>" id="STRENGTH<%#DataBinder.Eval(Container.DataItem,"ID") %>">
               <b><%#Convert.ToSingle(DataBinder.Eval(Container.DataItem, "STRENGTH")).ToString("F2")%></b>
               <input type="text" class="cancel" value="<%#Convert.ToSingle(DataBinder.Eval(Container.DataItem, "STRENGTH")).ToString("F2")%>" />
             </td>
             <td class="<%#DataBinder.Eval(Container.DataItem,"ID") %>" id="MACRONAIRE<%#DataBinder.Eval(Container.DataItem,"ID") %>">
               <b><%#Convert.ToSingle(DataBinder.Eval(Container.DataItem, "MACRONAIRE")).ToString("F2")%></b>
               <input type="text" class="cancel" value="<%#Convert.ToSingle(DataBinder.Eval(Container.DataItem, "MACRONAIRE")).ToString("F2")%>" />
             </td>
             <td class="<%#DataBinder.Eval(Container.DataItem,"ID") %>" id="REFLECTIVITY<%#DataBinder.Eval(Container.DataItem,"ID") %>">
               <b><%#Convert.ToSingle(DataBinder.Eval(Container.DataItem, "REFLECTITVITY")).ToString("F2")%></b>
               <input type="text" class="cancel" value="<%#Convert.ToSingle(DataBinder.Eval(Container.DataItem, "REFLECTITVITY")).ToString("F2")%>" />
             </td>
             <td class="<%#DataBinder.Eval(Container.DataItem,"ID") %>" id="YELLOWNESS<%#DataBinder.Eval(Container.DataItem,"ID") %>">
               <b><%#Convert.ToSingle(DataBinder.Eval(Container.DataItem, "YELLOWNESS")).ToString("F2")%></b>
               <input type="text" class="cancel" value="<%#Convert.ToSingle(DataBinder.Eval(Container.DataItem, "YELLOWNESS")).ToString("F2")%>" />
             </td>
             <td class="<%#DataBinder.Eval(Container.DataItem,"ID") %>" id="PRICE<%#DataBinder.Eval(Container.DataItem,"ID") %>">
               <b><%#Convert.ToSingle(DataBinder.Eval(Container.DataItem, "PRICE")).ToString("F2")%></b>
               <input type="text" class="cancel" value="<%#Convert.ToSingle(DataBinder.Eval(Container.DataItem, "PRICE")).ToString("F2")%>" />
             </td>
             <td>
             <center>
               <input type="button" value="修改" id="<%#DataBinder.Eval(Container.DataItem,"ID") %>" class="edit"/>
               <input type="button" value="取消" class="cancel" />
             </center>
             </td>
           </tr>
        </ItemTemplate>
        <FooterTemplate>
           </tbody>
          </table>
        </FooterTemplate>
      </asp:Repeater>
    <center><uc1:pageddata ID="DataSource" runat="server" /></center>
      
    </form>

CS部分：

public partial class viewcottoninfo : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {       

         DataSource.CommandText = "GetCottonInfo";
    }
    protected void Page_PreRender(object sender, EventArgs e)
    {
        RCottonList.DataSource = DataSource.Data;
        RCottonList.DataBind();
    }
}

webservice部分（ECottonInfo,EOperation分别为实体类 映射数据库，Ladmin为逻辑层 同时充当操作代理）：

    [WebMethod(EnableSession = true)]
    [ScriptMethod(ResponseFormat = ResponseFormat.Json)]
    public string AJAXEditCottonInfo(string id,string lv,string location_no,string bag_amount,
        string inventory,string head_length,string uniformity,string strength,string macronaire,
        string reflectivity,string yellowness,string price)
    {
        int iid = Convert.ToInt32(id);
        location_no = Server.UrlDecode(location_no);
        ECottonInfo myci = new ECottonInfo(iid, DateTime.Now.ToString(),lv, location_no, int.Parse(bag_amount),
            float.Parse(inventory), float.Parse(head_length), float.Parse(uniformity), float.Parse(strength), float.Parse(macronaire),
            float.Parse(reflectivity), float.Parse(yellowness));
        myci.ECIPrice = float.Parse(price);
        LAdmin myadmin = LAdmin.adminbuild();
        EOperation myope = new EOperation(DateTime.Now.ToString(), 4, myadmin.ID);
        if (myadmin.EditCottonInfo(myci, myope))
        {
            StringBuilder sb = new StringBuilder("{");
            sb.AppendFormat("'data':'T','lv':'{0}','date':'{1}','location':'{2}','amount':'{3}','inventory':'{4}','head_length':'{5}',",
                lv,DateTime.Now.ToString(), location_no,bag_amount,inventory,head_length);
            sb.AppendFormat("'uniformity':'{0}','strength':'{1}','macronaire':'{2}','reflectivity':'{3}','yellowness':'{4}','id':'{5}','price':'{6}'",
                uniformity,strength,macronaire,reflectivity,yellowness,id,price);
            sb.Append("}");
            return sb.ToString();
        }
        return "{'data':'F'}";
    }

当然我也知道此种功能网上必然有相应的第三方插件可以实现 而且更简单快捷 自己做完全是为了试试看有没有可以摆脱服务器控件的方法 同时也从某种角度上挖掘一下服务器控件的工作原理 虽然说如此开发效率比较低下 不过算是胜在用户体验了