采用动态代理方式调用WEB服务（转载+整理）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using System.Net;
using System.IO;
using System.Web.Services.Description;
using System.CodeDom;
using Microsoft.CSharp;
using System.CodeDom.Compiler;
namespace DPC.Test.DynamicProxy
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
　　　　　　　　　 //以下代码展示了动态调用获取指定手机号归属地WEB服务例子，最后打印出手机号归属地。
                string url = "http://webservice.webxml.com.cn/WebServices/MobileCodeWS.asmx";
                string[] _args = new string[];
                _args[] = "";
                _args[] = ""; //对于可选参数如果调用时不准备提供，则传递空字符串即可，但参数是不可缺少的，否则调用失败。
                object result = WsCaller.InvokeWebService(url, "getMobileCodeInfo", _args);
                Console.WriteLine( result.ToString() );
                Console.ReadKey();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
    }

    #region 动态调用
    /// <summary>
    ///动态调用WebService
    /// </summary>
    public class WsCaller
    {
        /// <summary>
        /// 获取WebService类型
        /// </summary>
        /// <param name="wsUrl">WebService地址</param>
        /// <returns></returns>
        private static string GetWsClassName(string wsUrl)
        {
            string[] parts = wsUrl.Split('/');
            string[] pps = parts[parts.Length - ].Split('.');
            return pps[];
        }
        /// <summary>
        /// 调用WebService
        /// </summary>
        /// <param name="wsUrl">WebService地址</param>
        /// <param name="methodName">方法名称</param>
        /// <param name="args">参数列表</param>
        /// <returns></returns>
        public static object InvokeWebService(string wsUrl, string methodName, object[] args)
        {
            return InvokeWebService(wsUrl, null, methodName, args);
        }
        /// <summary>
        /// 调用WebService
        /// </summary>
        /// <param name="wsUrl">WebService地址</param>
        /// <param name="className">类名</param>
        /// <param name="methodName">方法名称</param>
        /// <param name="args">参数列表</param>
        /// <returns></returns>
        public static object InvokeWebService(string wsUrl, string className, string methodName, object[] args)
        {
            string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";
            if ((className == null) || (className == ""))
            {
                className = GetWsClassName(wsUrl);
            }
            try
            {
                //获取WSDL
                WebClient wc = new WebClient();
                Stream stream = wc.OpenRead(wsUrl + "?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));
            }
        }
    }
    #endregion
}