在远程调用WebService时出现下面的情况：

              

这种情况一般是由于证书有问题时出现，如果在浏览器中打开是这种情况：

           

 

解决方法新建一个类，代码如下：

1     public static class CertificateTrust 2     { 3   4         public static void SetCertificatePolicy() 5         { 6             ServicePointManager.ServerCertificateValidationCallback 7                        += RemoteCertificateValidate; 8         }   9         private static bool RemoteCertificateValidate(10            object sender, X509Certificate cert,11             X509Chain chain, SslPolicyErrors error)12         {13             14             System.Console.WriteLine("Warning, trust any certificate");15             return true;16         }17     }

 

在动态编译WebService的代码中调用上面的类就可以了，注意调用的位置，一定要在打开前调用，下面代码的红色部分

动态编译WebSerivce的代码如下：

1     public class WSHelper 2     { 3         /// < summary>            4         /// 动态调用web服务          5         /// < /summary>           6         /// < param name="url">WSDL服务地址< /param>  7         /// < param name="methodname">方法名< /param>            8         /// < param name="args">参数< /param>            9         /// < returns>< /returns>          10         public static object InvokeWebService(string url, string methodname, object[] args)11         {12             return WSHelper.InvokeWebService(url, null, methodname, args);13         }14         /// < summary>          15         /// 动态调用web服务 16         /// < /summary>          17         /// < param name="url">WSDL服务地址< /param>18         /// < param name="classname">类名< /param>  19         /// < param name="methodname">方法名< /param>  20         /// < param name="args">参数< /param> 21         /// < returns>< /returns>22         public static object InvokeWebService(string url, string classname, string methodname, object[] args)23         {24             string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";25             if ((classname == null) || (classname == ""))26             {27                 classname = WSHelper.GetWsClassName(url);28             }29             try30             {   //获取WSDL   31                 WebClient wc = new WebClient();32 33                 CertificateTrust.SetCertificatePolicy();//证书出现问题时调用此代码34 35                 Stream stream = wc.OpenRead(url + "?WSDL");36                 ServiceDescription sd = ServiceDescription.Read(stream);37                 ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();38                 sdi.AddServiceDescription(sd, "", "");39                 CodeNamespace cn = new CodeNamespace(@namespace);40                 //生成客户端代理类代码          41                 CodeCompileUnit ccu = new CodeCompileUnit();42                 ccu.Namespaces.Add(cn);43                 sdi.Import(cn, ccu);44                 CSharpCodeProvider icc = new CSharpCodeProvider();45                 //设定编译参数添加所需要的DLL文件                 46                 CompilerParameters cplist = new CompilerParameters();47                 cplist.GenerateExecutable = false;48                 cplist.GenerateInMemory = true;49                 cplist.ReferencedAssemblies.Add("System.dll");50                 cplist.ReferencedAssemblies.Add("System.XML.dll");51                 cplist.ReferencedAssemblies.Add("System.Web.Services.dll");52                 cplist.ReferencedAssemblies.Add("System.Data.dll");53                 //编译代理类                 54                 CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu);55                 if (true == cr.Errors.HasErrors)56                 {57                     System.Text.StringBuilder sb = new System.Text.StringBuilder();58                     foreach (System.CodeDom.Compiler.CompilerError ce in cr.Errors)59                     {60                         sb.Append(ce.ToString());61                         sb.Append(System.Environment.NewLine);62                     }63                     throw new Exception(sb.ToString());64                 }65                 //生成代理实例，并调用方法   66                 System.Reflection.Assembly assembly = cr.CompiledAssembly;67                 Type t = assembly.GetType(@namespace + "." + classname, true, true);68                 object obj = Activator.CreateInstance(t);69                 System.Reflection.MethodInfo mi = t.GetMethod(methodname);70                 return mi.Invoke(obj, args); 71             }72             catch (Exception ex)73             {74                 throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));75             }76         }77         private static string GetWsClassName(string wsUrl)78         {79             string[] parts = wsUrl.Split('/');80             string[] pps = parts[parts.Length - 1].Split('.');81             return pps[0];82         }83     }

 

调用动态编译的代码如下：

1                 string url = "http://localhost:81/WebServiceLogin.asmx";2                 string[] args = new string[2];3                 args[0] = "参数1";4                 args[1] = "参数2";5                 object result = WSHelper.InvokeWebService(url, "HelloWorld", args);