如何在WPF 4应用程序中托管Silverlight 4应用程序？

我这样做的确如此.我在WPF主机中托管了一个Silverlight应用程序.我使用自托管WCF来提供双工网络tcp服务.要做到这一点,你还必须有一个http托管的clientaccesspolicy.xml,我也可以从同一个服务中自托管.

我希望我能解释得足以让球滚动.我将尽可能包含一些样本,但由于该项目,我无法分享所有内容.

首先,一些考虑因素：
1)netlight在Silverlight和WPF之间不安全,因为Silverlight(从版本4开始 – 仅测试版本5)无法进行安全连接,因此如果要使用此连接,则必须使用自己的加密.

2)有两种方法可以进行双工WCF,一种是使用http. http方法“轮询”服务以查看是否有任何命令来自客户端的主机.这固有地使它比net tcp慢得多.另一个是net tcp(如前所述).只有http方法支持开箱即用的加密.

3)当您在WPF主机中托管Silverlight应用程序时,当您开始调试时,您将无法调试Silverlight应用程序,因为调试器将无法连接到(如它所见)外部Silverlight应用程序,只有WPF.要解决此问题,您必须在启动WPF主机时“激活”Silverlight应用程序的附件.

现在@L_675_23@：

远程服务接口：

@H_874_43@using System.serviceModel; namespace Remoteservice { [serviceContract(CallBACkContract = typeof(IRemoteCallBACkservicE))] public interface IRemoteservice { [OperationContract] void TESTCallBACk(); // TODO: Add your service operations here } [serviceContract] public interface IRemoteCallBACkservice { [OperationContract(IsOneWay = truE)] void OnTESTCallBACkComplete(); // TODO: Add your service operations here } }

您的策略侦听器界面：

@H_874_43@using System.IO; using System.serviceModel; using System.serviceModel.Web; namespace Remoteservice { [serviceContract] public interface IPolicyRetriever { [OperationContract,WebGet(UriTemplate = "/clientaccesspolicy.xml")] Stream GetSilverlightPolicy(); [OperationContract,WebGet(UriTemplate = "/crossdomain.xml")] Stream GetFlashPolicy(); } }

实际的服务实现：

@H_874_43@using System.Text; namespace Remoteservice { public class Remoteservice : IRemoteservice,IPolicyRetriever { IRemoteCallBACkservice client = null; public void TESTCallBACk() { client = OperationContext.Current.GetCallBACkChAnnel<IRemoteCallBACkservice>(); client.onTESTCallBACkComplete(); } #region Cross Domain Policy Implementation private Stream StringToStream(String result) { WebOperationContext.Current.outgoingResponse.ContentType = "application/xml"; return new MemoryStream(Encoding.UTF8.GetBytes(result)); } //<grant-to> //<resource path="/" include-subpaths="true"/> //<socket-resource port="4502-4534" protocol="tcp" /> //</grant-to> Stream IPolicyRetriever.GetSilverlightPolicy() { String result = @"<?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""/><socket-resource port=""4502-4534"" protocol=""tcp"" /></grant-to></policy></cross-domain-access></access-policy>"; return StringToStream(result); } Stream IPolicyRetriever.GetFlashPolicy() { String result = @"<?xml version=""1.0""?><!DOCTYPE cross-domain-policy SYstem ""http://www.macromedia.com/xml/dtds/cross-domain-policy.dtd""><cross-domain-policy><allow-access-from domain=""*"" /></cross-domain-policy>"; return StringToStream(result); } #endregion Cross Domain Policy Implementation } }

上面应该在一个dll项目中的单独的类中,然后由WPF主机引用.

并在控制台应用程序中托管它(您需要将其转换为WPF)：

@H_874_43@using System; using System.serviceModel; using System.serviceModel.description; using Localservice; using Remoteservice; namespace Host { internal class Program { /// <sumMary> /// Main host entry point,this starts our listeners /// </sumMary> /// <param name="args">The args.</param> private static void Main(String[] args) { // Start our listeners StartListeners(80,4504,truE); } /// <sumMary> /// Starts the listeners. /// </sumMary> private static void StartListeners(int httpPort = 80,int netTcpPort = 4504,bool StartRemoteservice = truE) { Console.WriteLine("StarTing Policy Listener"); String policyaddress = "http://" + Environment.Machinename + ":" + httpPort.ToString(); String locallistener = "net.tcp://" + Environment.Machinename + ":" + NetTcpPort.ToString(); // Start our policy listener and (if required) our remote http service: using (System.serviceModel.serviceHost policyandremoteservicehost = new System.serviceModel.serviceHost(typeof(Remoteservice.RemoteservicE),new Uri(policyaddress))) { policyandremoteservicehost.AddserviceEndpoint(typeof(IPolicyRetriever),new System.serviceModel.WebhttpBinding(),"").behaviors.Add(new WebhttpBehavior()); // if we are to start our remote service here too,then add that endpoint in: if (StartRemoteservicE) { policyandremoteservicehost.AddserviceEndpoint(typeof(IRemoteservicE),new System.serviceModel.PollingDuplexhttpBinding(),"Remoteservice"); } serviceMetadataBehavior psmb = new serviceMetadataBehavior(); psmb.httpGetEnabled = true; psmb.MetadataExporter.PolicyVersion = PolicyVersion.Policy15; policyandremoteservicehost.Description.behaviors.Add(psmb); policyandremoteservicehost.open(); Console.WriteLine("WCF Host Running..."); Console.WriteLine("Press <enter> to shutdown"); Console.ReadLine(); Console.WriteLine("Closing connections,please wait"); policyandremoteservicehost.Close(); Console.WriteLine("Closed policy and remote services"); } } } }

哪个应该给你一些工作. startremoteservice bool可用于使其成为策略文件侦听器,然后允许您连接到远程服务,而远程服务不必托管策略文件.

请记住,Silverlight只能连接到http / httpS端口,以及4502-4534范围内的TCP端口.包含的clientaccesspolicy.xml非常不受限制.

我希望这对某人有用:).

如果你愿意,请随时问我问题,我会留意一下.

有几点需要注意：您可以从此解决方案中为托管的xap提供服务,因此不需要IIs.您还可以从浏览器中运行Silverlight xap并仍然使用这些服务.

调试答案如下：Debugging Silverlight hosted in WPF