动态调用Web Service方法命名空间的问题

在网上找了段代码，实现动态调用Web Service方法，而不通过添加web引用的方法调用，代码是这样的
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());
这个@namespace命名空间变量，我传什么值，是远程web service类那边的命名空间吗，我从里可以知道这个值
如果远程web service类没有写命名空间，就像这样
/// <summary>
///DPersonService 的摘要说明/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class PersonService : System.Web.Services.WebService {
这时@namespace传什么值呢