动态调用webservice

Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> protected string TestService(string strurl,string methodname) 
{ 
    System.Net.WebClient client = new System.Net.WebClient(); 
    String url = ""+strurl+"?WSDL";
    System.IO.Stream stream = client.OpenRead(url); 
    System.Web.Services.Description.ServiceDescription description = System.Web.Services.Description.ServiceDescription.Read(stream); 

    System.Web.Services.Description.ServiceDescriptionImporter importer = new System.Web.Services.Description.ServiceDescriptionImporter();//创建客户端代理代理类。 

    importer.ProtocolName = "Soap"; //指定访问协议。 
    importer.Style = System.Web.Services.Description.ServiceDescriptionImportStyle.Client; //生成客户端代理。 
    importer.CodeGenerationOptions = CodeGenerationOptions.GenerateProperties | CodeGenerationOptions.GenerateNewAsync; 

    importer.AddServiceDescription(description, null, null); //添加WSDL文档。 

    CodeNamespace nmspace = new CodeNamespace(); //命名空间 
    nmspace.Name = "TestWebService"; 
    CodeCompileUnit unit = new CodeCompileUnit(); 
    unit.Namespaces.Add(nmspace); 

    ServiceDescriptionImportWarnings warning = importer.Import(nmspace, unit); 
    CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp"); 

    CompilerParameters parameter = new CompilerParameters(); 
    parameter.GenerateExecutable = false; 
    parameter.OutputAssembly = "MyTest.dll";//输出程序集的名称 
    parameter.ReferencedAssemblies.Add("System.dll"); 
    parameter.ReferencedAssemblies.Add("System.XML.dll"); 
    parameter.ReferencedAssemblies.Add("System.Web.Services.dll"); 
    parameter.ReferencedAssemblies.Add("System.Data.dll"); 

    CompilerResults result = provider.CompileAssemblyFromDom(parameter, unit); 
    if (result.Errors.HasErrors) 
    { 
        // 显示编译错误信息 
    } 

    Assembly asm = Assembly.LoadFrom("MyTest.dll");//加载前面生成的程序集 
    Type t = asm.GetType("TestWebService.Service"); 

    object o = Activator.CreateInstance(t); 
    MethodInfo method = t.GetMethod(methodname);//GetPersons是服务端的方法名称,你想调用服务端的什么方法都可以在这里改,最好封装一下 
    //String[] item = (String[])method.Invoke(o, null); 
    //注：method.Invoke(o, null)返回的是一个Object,如果你服务端返回的是DataSet,这里也是用(DataSet)method.Invoke(o, null)转一下就行了 
    //foreach (string str in item) 
        //Console.WriteLine(str); 

    //上面是根据WebService地址，模似生成一个代理类,如果你想看看生成的代码文件是什么样子，可以用以下代码保存下来，默认是保存在bin目录下面 
    TextWriter writer = File.CreateText("MyTest.cs"); 
    provider.GenerateCodeFromCompileUnit(unit, writer, null); 
    writer.Flush(); 
    writer.Close(); 

    return method.Invoke(o, null).ToString(); 
}