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  • WCF Data Services实例:ASP.net AJAX访问

    本文参考 Code.msdn的例子,在此基础上实现了一个参考例子,代码放在了:

    http://dskit.codeplex.com

    如果想在Asp.net MVC应用以JavaScript中访问WCF Data Service服务,以下是使用Microsoft AJAX Library库进行处理的例子

    var dataContext;
    var queryObject, queryObject1;
    Sys.require([Sys.components.dataView, Sys.components.adoNetDataContext]);
    //DOM加载完成后执行
    Sys.onReady(function () {
    dataContext = Sys.create.adoNetDataContext(
            {
    serviceUri: "/Services/NorthwindService.svc",
    mergeOption: Sys.Data.MergeOption.appendOnly
            });
    dataContext.initialize();
    queryObject = new Sys.Data.AdoNetQueryBuilder("Customers");
    queryObject.set_orderby("ContactName");            //$orderby
    queryObject.set_filter("City eq " + "'London'");   // $filter
    queryObject.set_expand("Orders");                  //$expand
    queryObject1 = new Sys.Data.AdoNetQueryBuilder("Customers");
    queryObject1.set_filter("startswith(CompanyName, 'A')");

    });
    <body  xmlns:dataview="javascript:Sys.UI.DataView" xmlns:sys="javascript:Sys">
                  <table>
                        <tr class="tableHeader">
                              <td>
                                      ID
                              </td>
                               <td>
                                      Name
                               </td>
                               <td>
                                      Contact
                               </td>
                               <td>
                                      # Orders
                               </td>
                        </tr>
                  <tbody sys:attach="dataview" class="sys-template" dataview:dataprovider="{{ dataContext }}"
                          dataview:fetchoperation="{{ queryObject.toString() }}" dataview:autofetch="true">
                               <tr>
                                      <td>
                                             {{ CustomerID }}
                                      </td>
                                      <td>
                                             {{ CompanyName }}
                                      </td>
                                      <td>
                                             {{ ContactName }}
                                      </td>
                                      <td>
                                             {{ Orders.length }}
                                      </td>
                               </tr>
                        </tbody>
                  </table>

    以上的代码效果在下图的上部分。

    clip_image002

    上图是包含:表格显示、查询、主从表三种场景的演示,可见MS AJAX的客户端脚本库功能很强大。

    当面的表格显示如果定制可以使用CSS控制,当然也有很多的框架库,如Jquery中的jqGrid

    clip_image004

    如果和Asp.net集成,可以使用jqMvcGrid

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  • 原文地址:https://www.cnblogs.com/2018/p/1860095.html
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