创建类WebServiceHelper：

public class WebServiceHelper    {        #region 动态调用WebService动态调用地址        /// < 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 WebServiceHelper.InvokeWebService(url, null, methodname, args);        }       /// 
       /// 动态调用web服务       /// 
        /// WSDL服务地址       /// 服务接口类名        /// 方法名       /// 参数值       /// 
               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WSDL                   WebClient wc = new WebClient();                Stream stream = wc.OpenRead(url + "?WSDL");                ServiceDescription sd = ServiceDescription.Read(stream);                //注意classname一定要赋值获取                  classname = sd.Services[0].Name;                               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);                           }            catch (Exception ex)            {                throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));               // return "Error:WebService调用错误！" + ex.Message;            }        }        private static string GetWsClassName(string wsUrl)        {            string[] parts = wsUrl.Split('/');            string[] pps = parts[parts.Length - 1].Split('.');            return pps[0];        }        #endregion    }}

 

1

 调用操作：

/// 
         /// 调用操作          /// 
        ///         ///         private void button1_Click(object sender, EventArgs e)        {
                #region 动态调用 webservices地址            try            {                               object[] args = new object[3];                args[0] = ("参数一");                args[1] = ("参数二");                args[2] = ("参数三");                object result = WebServiceHelper.InvokeWebService("http://112.160.100.110:8000/Service1.asmx", "服务方法：send_message", args);                string message = result.ToString();            }                         catch { }            #endregion        }

 原文地址:http://www.cnblogs.com/Warmsunshine/p/3813551.html