●创建silverlight+wcf

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
using SilverlightWCF.DAL;

namespace SilverlightWCFServices
{
    // 注意: 使用“重构”菜单上的“重命名”命令，可以同时更改代码和配置文件中的接口名“IWorkerInfoService”。
    [ServiceContract]
    public interface IWorkerInfoService
    {
        [OperationContract]
        [ServiceKnownType(typeof(WorkerInfo))]
        List<WorkerInfo> getWorkerInfo();
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
using sil.DAL;
using sil.BLL;
using System.ServiceModel.Activation;

namespace sil.Services
{
    // 注意: 使用“重构”菜单上的“重命名”命令，可以同时更改代码、svc 和配置文件中的类名“WorkerService”。
    // 注意: 为了启动 WCF 测试客户端以测试此服务，请在解决方案资源管理器中选择 WorkerService.svc 或 WorkerService.svc.cs，然后开始调试。
    //[ServiceBehavior(IncludeExceptionDetailInFaults = true)]
    //[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
    public class WorkerService : IWorkerService
    {
        public List<WorkerInfo> getAllWorker()
        {
            return new BLL_Worker().getAllWorker();
        }
    }
}

<?xml version="1.0" encoding="utf-8" ?>
<access-policy>
  <cross-domain-access>
    <policy>
      <allow-from http-request-headers="*">
        <domain uri="*"/>
      </allow-from>
      <grant-to>
        <resource path="/" include-subpaths="true"/>
      </grant-to>
    </policy>
  </cross-domain-access>
</access-policy>

using SilverlightWCFClient.WorkerInfoServiceReference;

        public void getWorkerInfo()
        {
            WorkerInfoServiceClient client = new WorkerInfoServiceClient();
            client.getWorkerInfoCompleted += client_getWorkerInfoCompleted;  //vs版本不同，这行代码会有所差异
            client.getWorkerInfoAsync();
        }

        void client_getWorkerInfoCompleted(object sender, getWorkerInfoCompletedEventArgs e)
        {
            if (e.Error != null)
                return;
            if (e.Result.Count > 0)
            {
                dgWorkerInfo.ItemsSource = e.Result.ToList();
            }
        }