public class WebServiceHelper{//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, string methodname, object[] args){string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";if ((classname == null) || (classname == "")){classname = WebServiceHelper.GetWsClassName(url);}try{//获取WSDLWebClient 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];}}