C# winform 动态操作webService

1.动态操作webService类

  public static class WebServiceHelper

    {

        #region InvokeWebService

        //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 = "bloodWeb";

            if ((classname == null) || (classname == ""))

            {

                classname = WebServiceHelper.GetWsClassName(url);

            }

            try

            {

                //使用 XmlTextReader 对象，创建和格式化 WSDL 文档

                XmlTextReader reader = new XmlTextReader(url + "?wsdl");

                ServiceDescription sd = ServiceDescription.Read(reader);

                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 - ].Split('.');

            return pps[];

        }

        #endregion

    }

2.以天天气预报为例 地址：http://www.webxml.com.cn/WebServices/WeatherWebService.asmx

3.取获得的省份 代码如下

  object obj = WebServiceHelper.InvokeWebService("http://www.webxml.com.cn/WebServices/WeatherWebService.asmx", "getSupportProvince", null);

  string[] ss = obj as string[];

4结果如下图：