C# Code:


using System;
using System.Web.Services.Description;
using System.IO;
using System.Net;
using System.Text;
using System.CodeDom;
using System.CodeDom.Compiler;
using Microsoft.CSharp;

/// <summary>
///  WebServiceHelper 的摘要说明
/// </summary>
public class WebServiceHelper
{
   private 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 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];
   }
}

//来源:C/S框架网(www.csframework.com) QQ:1980854898

C# Code:


using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;

public partial class Test3 : System.Web.UI.Page
{
   protected void Page_Load(object sender, EventArgs e)
   {
      string[] args = new string[1];
      args[0] = "202.102.224.68";
      
      object obj = WebServiceHelper.InvokeWebService(
"http://www.webxml.com.cn/WebServices/IpAddressSearchWebService.asmx",
"getCountryCityByIp", args);

      Response.Write(((string[])(obj))[1]);
   }
}

//来源:C/S框架网(www.csframework.com) QQ:1980854898