C# winform 动态调用WebService

封装的通用方法：

     using System;
     using System.Collections.Generic;
     using System.Text;
     using System.Xml;
     using System.Net;
     using System.Web.Services.Description;
     using System.CodeDom;
     using System.CodeDom.Compiler;
     using System.Reflection;
     namespace WindowsServiceWebDefaultHotCity
     {
         /// <summary<
         /// WebService代理类
         /// </summary<
         public class WebServiceAgent
         {
             private object agent;
             private Type agentType;
             private const string CODE_NAMESPACE = "Beyondbit.WebServiceAgent.Dynamic";
             /// <summary<
             /// 构造函数
             /// </summary<
             /// <param name="url"<</param<
             public WebServiceAgent(string url)
             {
                 XmlTextReader reader = new XmlTextReader(url + "?wsdl");  

                 //创建和格式化 WSDL 文档
                 ServiceDescription sd = ServiceDescription.Read(reader);  

                 //创建客户端代理代理类
                 ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();
                 sdi.AddServiceDescription(sd, null, null);  

                 //使用 CodeDom 编译客户端代理类
                 CodeNamespace cn = new CodeNamespace(CODE_NAMESPACE);
                 CodeCompileUnit ccu = new CodeCompileUnit();
                 ccu.Namespaces.Add(cn);
                 sdi.Import(cn, ccu);
                 Microsoft.CSharp.CSharpCodeProvider icc = new Microsoft.CSharp.CSharpCodeProvider();
                 CompilerParameters cp = new CompilerParameters();
                 CompilerResults cr = icc.CompileAssemblyFromDom(cp, ccu);
                 agentType = cr.CompiledAssembly.GetTypes()[];
                 agent = Activator.CreateInstance(agentType);
             }  

             ///<summary<
             ///调用指定的方法
             ///</summary<
             ///<param name="methodName"<方法名，大小写敏感</param<
             ///<param name="args"<参数，按照参数顺序赋值</param<
             ///<returns<Web服务的返回值</returns<
             public object Invoke(string methodName, params object[] args)
             {
                 MethodInfo mi = agentType.GetMethod(methodName);
                 return this.Invoke(mi, args);
             }
             ///<summary<
             ///调用指定方法
             ///</summary<
             ///<param name="method"<方法信息</param<
             ///<param name="args"<参数，按照参数顺序赋值</param<
             ///<returns<Web服务的返回值</returns<
             public object Invoke(MethodInfo method, params object[] args)
             {
                 return method.Invoke(agent, args);
             }
             public MethodInfo[] Methods
             {
                 get
                 {
                     return agentType.GetMethods();
                 }
             }
         }
     }  

调用方法：

            string _url = "http://localhost:26711/Index.asmx";
            TCMDSS_DEMO.Common.WebServiceAgent agent = new TCMDSS_DEMO.Common.WebServiceAgent(_url);
            object[] args = new object[];
            args[] = "GetProductRegister";
            args[] = "";
            args[] = "";
            string text = agent.Invoke("CallCenter", args).ToString();
            MessageBox.Show(text);