如何使用 WCF 服务通过客户端将数据绑定到 DropDownList

Question

我是 WCF 服务的新手。我想在 ASP.NET 中使用 WCF 服务通过 jQuery 将数据绑定到 DropDownList。

Answer 1

这是一个简单的$.ajax(..) 电话 http://api.jquery.com/jQuery.ajax/

在 WCF 中，您可以创建 Rest Service（返回 JSON）并在 jQuery 中使用此 JSON 响应

http://msdn.microsoft.com/en-us/netframework/dd547388

互联网上有很多例子。

c# 中的示例（Atom 提要）：

   [ServiceContract]
   public interface INewsFeed
   {
      [OperationContract]
      [WebGet]
      Atom10FeedFormatter GetFeeds();
   }

    public class NewsFeed : INewsFeed
    {
          public Atom10FeedFormatter GetFeeds()
          {
          SyndicationFeed feed = new SyndicationFeed("My Blog Feed", "This is a test feed", new Uri("http://SomeURI"));
           feed.Authors.Add(new SyndicationPerson("someone@microsoft.com"));
           feed.Categories.Add(new SyndicationCategory("How To Sample Code"));
           feed.Description = new TextSyndicationContent("This is a how to sample that demonstrates how to expose a feed using RSS with WCF");

          SyndicationItem item1 = new SyndicationItem(
             "Lorem ipsum",
             "Lorem ipsum",
             new Uri("http://localhost/Content/One"),
             "ItemOneID",
             DateTime.Now);

         List<SyndicationItem> items = new List<SyndicationItem>();  
         items.Add(item1); 
         feed.Items = items;   
         return new Atom10FeedFormatter(feed);
          }
    }

在 svc 中你只需要添加 (Factory 部分):

<%@ ServiceHost Language="C#" Debug="true" Service="RssReader.Wcf.NewsFeed" CodeBehind="NewsFeed.svc.cs" Factory=System.ServiceModel.Activation.WebServiceHostFactory%>

已编辑：

<system.serviceModel>
    <behaviors>
          <serviceBehaviors>
            <behavior>
              <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
              <serviceMetadata httpGetEnabled="true"/>
              <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
              <serviceDebug includeExceptionDetailInFaults="false"/>
            </behavior>
          </serviceBehaviors>
        </behaviors>
</system.serviceModel>

重要的部分是 <serviceMetadata httpGetEnabled="true"/> 在这种情况下您不需要定义任何端点