动态调用webservice

? protected ? string ?TestService( string ?strurl, string ?methodname)?
{?
????System.Net.WebClient?client? = ? new ?System.Net.WebClient();?
????String?url? = ? "" + strurl + " ?WSDL " ;
????System.IO.Stream?stream? = ?client.OpenRead(url);?
????System.Web.Services.Description.ServiceDescription?description? = ?System.Web.Services.Description.ServiceDescription.Read(stream);?

????System.Web.Services.Description.ServiceDescriptionImporter?importer? = ? new ?System.Web.Services.Description.ServiceDescriptionImporter(); // 创建客户端代理代理类。?

????importer.ProtocolName? = ? " Soap " ;? // 指定访问协议。?
????importer.Style? = ?System.Web.Services.Description.ServiceDescriptionImportStyle.Client;? // 生成客户端代理。?
????importer.CodeGenerationOptions? = ?CodeGenerationOptions.GenerateProperties? | ?CodeGenerationOptions.GenerateNewAsync;?

????importer.AddServiceDescription(description,? null ,? null );? // 添加WSDL文档。?

????CodeNamespace?nmspace? = ? new ?CodeNamespace();? // 命名空间?
????nmspace.Name? = ? " TestWebService " ;?
????CodeCompileUnit?unit? = ? new ?CodeCompileUnit();?
????unit.Namespaces.Add(nmspace);?

????ServiceDescriptionImportWarnings?warning? = ?importer.Import(nmspace,?unit);?
????CodeDomProvider?provider? = ?CodeDomProvider.CreateProvider( " CSharp " );?

????CompilerParameters?parameter? = ? new ?CompilerParameters();?
????parameter.GenerateExecutable? = ? false ;?
????parameter.OutputAssembly? = ? " MyTest.dll " ; // 输出程序集的名称?
????parameter.ReferencedAssemblies.Add( " System.dll " );?
????parameter.ReferencedAssemblies.Add( " System.XML.dll " );?
????parameter.ReferencedAssemblies.Add( " System.Web.Services.dll " );?
????parameter.ReferencedAssemblies.Add( " System.Data.dll " );?

????CompilerResults?result? = ?provider.CompileAssemblyFromDom(parameter,?unit);?
???? if ?(result.Errors.HasErrors)?
????{?
???????? // ?显示编译错误信息?
????}?

????Assembly?asm? = ?Assembly.LoadFrom( " MyTest.dll " ); // 加载前面生成的程序集?
????Type?t? = ?asm.GetType( " TestWebService.Service " );?

???? object ?o? = ?Activator.CreateInstance(t);?
????MethodInfo?method? = ?t.GetMethod(methodname); // GetPersons是服务端的方法名称,你想调用服务端的什么方法都可以在这里改,最好封装一下?
???? // String[]?item?=?(String[])method.Invoke(o,?null);?
???? // 注：method.Invoke(o,?null)返回的是一个Object,如果你服务端返回的是DataSet,这里也是用(DataSet)method.Invoke(o,?null)转一下就行了?
???? // foreach?(string?str?in?item)?
???????? // Console.WriteLine(str);?

???? // 上面是根据WebService地址，模似生成一个代理类,如果你想看看生成的代码文件是什么样子，可以用以下代码保存下来，默认是保存在bin目录下面?
????TextWriter?writer? = ?File.CreateText( " MyTest.cs " );?
????provider.GenerateCodeFromCompileUnit(unit,?writer,? null );?
????writer.Flush();?
????writer.Close();?

???? return ?method.Invoke(o,? null ).ToString();? }