asp.net调用web service不通过添加web引用的方式怎么调用

创建方法

//动态调用web服务

        public static object InvokeWebSer(string url,string @namespace, string classname, string methodname, object[] args)

        {

                System.Net.WebClient wc = new System.Net.WebClient();

                string URL=string.Empty;

                if ((url.Substring(url.Length - 5, 5) != null) && ((url.Substring(url.Length - 5, 5).ToLower() != "?wsdl")))

                    URL = url + "?WSDL";

                else

                    URL = url;

                System.IO.Stream stream = wc.OpenRead(URL);

                System.Web.Services.Description.ServiceDescription sd = System.Web.Services.Description.ServiceDescription.Read(stream);

                System.Web.Services.Description.ServiceDescriptionImporter sdi = new System.Web.Services.Description.ServiceDescriptionImporter();

                sdi.AddServiceDescription(sd, "", "");

                System.CodeDom.CodeNamespace cn = new System.CodeDom.CodeNamespace(@namespace);

                System.CodeDom.CodeCompileUnit ccu = new System.CodeDom.CodeCompileUnit();

                ccu.Namespaces.Add(cn);

                sdi.Import(cn, ccu);

Microsoft.CSharp.CSharpCodeProvider csc = new Microsoft.CSharp.CSharpCodeProvider();
System.CodeDom.Compiler.CompilerParameters cplist = new System.CodeDom.Compiler.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");
System.CodeDom.Compiler.CompilerResults cr = csc.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());

                }

                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);

        }    

调用

object obj = InvokeWebservice("http://localhost/GSP_WorkflowWebservice/common.asmx",

                              "YouNamespace",  // 欲调用的WebService的命名空间

                              "ServiceName",   // 欲调用的WebService的类名（不包括命名空间前缀）

                              "MethodName",    // 欲调用的WebService的方法名

                              new object[]{"1"}); //传入参数

原文：http://bbs.csdn.net/topics/360223969

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