原來做專案的時候使用webservice大部分都是用的靜態連線方式獲取資料，可是缺點就是部能實施的更新webservice，總是得重新生成才行，如果專案一旦部署webservice再有修改那麼靜態的引用也得相應的修改和更新，很不爽。

所以就想到了用動態的webservice來實現，不過缺點就是效率低了，響應速度真是讓人著急。

網上有很多例子動態webservice的例子如：

//http://blog.csdn.net/lzy_1515 public class link_webservice { public link_webservice() { // //TODO: 在此處新增建構函式邏輯 // } /// <summary> /// 動態呼叫WebService /// </summary> /// <param name="url">WebService地址</param> /// <param name="methodname">方法名(模組名)</param> /// <param name="args">引數列表</param> /// <returns>object</returns> public static object InvokeWebService(string url, string methodname, object[] args) { return InvokeWebService(url, null, methodname, args); } //http://blog.csdn.net/lzy_1515 /// <summary> /// 動態呼叫WebService /// </summary> /// <param name="url">WebService地址</param> /// <param name="classname">類名</param> /// <param name="methodname">方法名(模組名)</param> /// <param name="args">引數列表</param> /// <returns>object</returns> public static object InvokeWebService(string url, string classname, string methodname, object[] args) { string @namespace = "ServiceBase.WebService.DynamicWebLoad"; if (classname == null || classname == "") { classname = GetClassName(url); } //獲取服務描述語言(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); //生成客戶端代理類程式碼 CodeCompileUnit ccu = new CodeCompileUnit(); ccu.Namespaces.Add(cn); sdi.Import(cn, ccu); CSharpCodeProvider csc = new CSharpCodeProvider(); ICodeCompiler icc = csc.CreateCompiler(); //設定編譯器的引數 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"); //編譯代理類 CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu); if (true == cr.Errors.HasErrors) { System.Text.StringBuilder sb = new StringBuilder(); foreach (CompilerError ce in cr.Errors) { sb.Append(ce.ToString()); sb.Append(System.Environment.NewLine); } throw new Exception(sb.ToString()); } //生成代理例項,並呼叫方法 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); } private static string GetClassName(string url) { string[] parts = url.Split('/'); string[] pps = parts[parts.Length - 1].Split('.'); return pps[0]; } //http://blog.csdn.net/lzy_1515

這個例子可以實現動態連線可是效率不是很高，因為每次請求的時候都重新生成，所以慢。

後來想了想要是加了快取會不會提高一些速度，經過改進成功了，第一次的時候他會進行生成，以後在進來

就去快取裡去取了，響應時間0秒。

修改後的程式碼如下：

// http://blog.csdn.net/lzy_1515 //string url = "http://url.asmx"; //string[] args = new string[2]; //args[0] = 0; //args[1] = "12"; //object result = DynamicWebServices.InvokeWebService(url, "Getcc", args); //this.label_Result.Text = result.ToString(); public class DynamicWebServices { static SortedList<string, Type> _typeList = new SortedList<string, Type>(); #region InvokeWebService static string GetCacheKey(string url, string className) { return url.ToLower() + className; } static Type GetTypeFromCache(string url, string className) { string key = GetCacheKey(url, className); foreach (KeyValuePair<string, Type> pair in _typeList) { if (key == pair.Key) { return pair.Value; } } return null; } static Type GetTypeFromWebService(string url, string className) { string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling"; if ((className == null) || (className == "")) { className = GetWsClassName(url); } //http://blog.csdn.net/lzy_1515 //獲取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); //生成客戶端代理類程式碼 CodeCompileUnit ccu = new CodeCompileUnit(); ccu.Namespaces.Add(cn); sdi.Import(cn, ccu); CSharpCodeProvider csc = new CSharpCodeProvider(); ICodeCompiler icc = csc.CreateCompiler(); //設定編譯引數 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"); //編譯代理類 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()); } //生成代理例項，並呼叫方法 System.Reflection.Assembly assembly = cr.CompiledAssembly; Type t = assembly.GetType(@namespace + "." + className, true, true); return t; } //動態呼叫web服務 public static object InvokeWebService(string url, string methodName, object[] args) { return InvokeWebService(url, null, methodName, args); } public static object InvokeWebService(string url, string className, string methodName, object[] args) { try { Type t = GetTypeFromCache(url, className); if (t == null) { t = GetTypeFromWebService(url, className); //新增到緩衝中 string key = GetCacheKey(url, className); _typeList.Add(key, t); } object obj = Activator.CreateInstance(t); 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]; } #endregion // http://blog.csdn.net/lzy_1515

個人的想法就是這樣，如果有更好的方法請多多交流。