C# .Net动态调用webService (转载)

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using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Net;using System.IO;using System.Web.Services.Description;using System.CodeDom;using Microsoft.CSharp;using System.CodeDom.Compiler;using System.Reflection;namespace HTTPS{    public class WSHelper    {        /// < summary>                   /// 动态调用web服务                 /// < /summary>                  /// < param name="url">WSDL服务地址< /param>         /// < param name="methodname">方法名< /param>                   /// < param name="args">参数< /param>                   /// < returns>< /returns>                  public static object InvokeWebService(string url, string methodname, object[] args)        {            return WSHelper.InvokeWebService(url, null, methodname, args);        }        /// < summary>                  /// 动态调用web服务         /// < /summary>                  /// < param name="url">WSDL服务地址< /param>        /// < param name="classname">类名< /param>          /// < param name="methodname">方法名< /param>          /// < param name="args">参数< /param>         /// < returns>< /returns>        public static object InvokeWebService(string url, string classname, string methodname, object[] args)        {            string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";            if ((classname == null) || (classname == ""))            {                classname = WSHelper.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 icc = new CSharpCodeProvider();                //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);                // PropertyInfo propertyInfo = type.GetProperty(propertyname);                     //return propertyInfo.GetValue(obj, null);             }            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];        }    }}调用string url = "http://webservice.webxml.com.cn/WebServices/TrainTimeWebService.asmx";             string[] args = new string[2];             args[0] = "k123";             args[1] = "";             object result = WSHelper.InvokeWebService(url, "getDetailInfoByTrainCode", args);             DataSet ds = (DataSet)result;             this.GridView1.DataSource = ds;             this.GridView1.DataBind();
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