动态调用WebService

public static object InvokeWebService( string url,?? string methodname, object [] args)

???????? #region InvokeWebService
???????? // 动态调用web服务
???????? public static object InvokeWebService( string url, string methodname, object [] args)
???????? {
???????????? return WebServiceHelper.InvokeWebService(url, null ,methodname,args) ;
???????? }

???????? public static object InvokeWebService( string url,?? string classname, object [] args)
???????? {
???????????? string @namespace = " EnterpriseServerBase.WebService.DynamicWebCalling " ;
???????????? if ((classname == null ) || (classname == "" ))
???????????? {
???????????????? classname = WebServiceHelper.GetWsClassName(url) ;
???????????? }

???????????? try
???????????? {
???????????????? // 获取WSDL
???????????????? WebClient wc??????????????????? = new WebClient();
???????????????? Stream stream?????????????????? = wc.OpenRead(url + " ?WSDL " );
???????????????? ServiceDescription sd?????????? = ServiceDescription.Read(stream);
???????????????? ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();
???????????????? sdi.AddServiceDescription(sd, "" , "" );
???????????????? CodeNamespace cn???????????????? = new CodeNamespace(@namespace);
????????????????
???????????????? // 生成客户端代理类代码
???????????????? CodeCompileUnit ccu????????????? = new CodeCompileUnit();
???????????????? ccu.Namespaces.Add(cn);
???????????????? sdi.Import(cn,ccu);
???????????????? CSharpCodeProvider csc?????????? = new CSharpCodeProvider();
???????????????? ICodeCompiler icc??????????????? = csc.CreateCompiler();
????????????????
???????????????? // 设定编译参数
???????????????? CompilerParameters cplist??????? = new CompilerParameters();
???????????????? cplist.GenerateExecutable??????? = false ;
???????????????? cplist.GenerateInMemory????????? = true ;
???????????????? cplist.ReferencedAssemblies.Add( " System.dll " );
???????????????? cplist.ReferencedAssemblies.Add( " System.XML.dll " );
???????????????? cplist.ReferencedAssemblies.Add( " System.Web.Services.dll " );
???????????????? cplist.ReferencedAssemblies.Add( " System.Data.dll " );

???????????????? // 编译代理类
???????????????? CompilerResults cr = icc.CompileAssemblyFromDom(cplist,ccu);
???????????????? if ( true == cr.Errors.HasErrors)
???????????????? {
???????????????????? System.Text.StringBuilder sb = new System.Text.StringBuilder();
???????????????????? foreach (System.CodeDom.Compiler.CompilerError ce in cr.Errors)
???????????????????? {
???????????????????????? sb.Append(ce.ToString());
???????????????????????? sb.Append(System.Environment.NewLine);
???????????????????? }
???????????????????? throw new Exception(sb.ToString());
???????????????? }

???????????????? // 生成代理实例，并调用方法
???????????????? System.Reflection.Assembly assembly = cr.CompiledAssembly;
???????????????? Type t = assembly.GetType(@namespace + " . " + classname, true , true );
???????????????? object obj = Activator.CreateInstance(t);
???????????????? System.Reflection.MethodInfo mi = t.GetMethod(methodname);

???????????????? return mi.Invoke(obj,args);
???????????? }
???????????? catch (Exception ex)
???????????? {
???????????????? throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));
???????????? }
???????? }

???????? private static string GetWsClassName( string wsUrl)
???????? {
???????????? string [] parts = wsUrl.Split( ' / ' ) ;
???????????? string [] pps??? = parts[parts.Length - 1 ].Split( ' . ' ) ;

???????????? return pps[ 0 ] ;
???????? }
???????? #endregion

???????????? string url = " http://www.webservicex.net/globalweather.asmx " ;
???????????? string [] args = new string [ 2 ] ;
???????????? args[ 0 ] = this .textBox_CityName.Text ;
???????????? args[ 1 ] = " China " ;
???????????? object result = WebServiceHelper.InvokeWebService(url, " GetWeather " ,args) ;
???????????? this .label_Result.Text = result.ToString() ;