???????????е?????????????洦????????????????Щ??????????????????????????Щ????????????????????????????????????????????????????ò???????????????????У???????????????????????

?????????о?????????????????????ο???

????1????????????????μ??????У??????????????????????????

//public void ExecuteSqlCommand(string sqlCommandText)
//{
       //this.ExecuteSqlCommand(sqlCommandText?? CommandType.Text?? null);
//}
......

????ExecuteSqlCommand???????????????μ????????SqlHelper?У????????????????????????????????п????????????????????????????????????????????2????????????μ?????

????2??????????????????????????????????????????????????

static ClientProxyFactory()
        {
            _managerTypeAssemblies = new List<string>();
            _managerTypesCache = new Dictionary<string?? Type>();
            _managerInstancesCache = new Dictionary<string?? IManagerBase>();
            EnableManagerInstanceCache = true;

            //if (Platform == CommunicationPlatform.Local)
            //{
            //    foreach (string file in ManagerAssembly)
            //    {
            //        if (File.Exists(String.Format("{0}.dll"?? file)))
            //        {
            //            Assembly assembly = Assembly.Load(file);
            //                _managerTypeAssemblies.Add(assembly);
            //        }
            //    }
            //}
        }
......

???????????????У?CommunicationPlatform?Local?????????????????????????????????????????????????????_managerTypeAssemblies?????С??????????????????????????Local??????????.net Remoting??????????δ????????

????3??????????????????′??????????????檔????????????????????￡?????????????

????????????????????????????壬??????????t????????????????????t??????????

 /// <summary>
/// ????????????
/// </summary>
/// <param name="file"></param>
/// <param name="typeName"></param>
/// <param name="methodName"></param>
/// <returns></returns>
public static object InvokeStaticMethod(Type typeName??string methodName??object [] args)
        {
            //Assembly  assembly = Assembly.LoadFile(file);
            //Type type = assembly.GetType(typeName);
            Assembly assembly = typeName.Assembly;

            //obj2 = Activator.CreateInstance(type?? args);

            System.Reflection.MethodInfo method = typeName.GetMethod(methodName??new Type[]{ typeof(object)});
           // object obj= assembly.CreateInstance(typeName);

           // object obj = Activator.CreateInstance(typeName?? args);
            return typeName.InvokeMember(methodName?? BindingFlags.Public | BindingFlags.Static?? null?? null?? args);
        }

        public static object GetStaticPropertyValue(Type type?? string propertyName)
        {
            object objec=CreateObjectInstance(type);
            PropertyInfo propertyInfo = type.GetProperty(propertyName??BindingFlags.Public | BindingFlags.Static | BindingFlags.DeclaredOnly);
            //type.GetProperty(propertyName).GetValue(null?? null);
            return propertyInfo.GetValue(objec?? null);
        }

?????????汻????????п???????????????????????????????????????????????????????????????????????У???????????????????￡???б???????????????С????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????е?????г???????????

??????????????????????????????ü????????????????????????????з???????е??????÷??????ReflectionHelper?????У???????????????????????????????????д????ɡ?

????4?????????????????′????в?????????????

?????????????????????????????????????

//bakup file
public static BackupFile(string sourceFileName?? string destFileName)
{
          try
           {
                System.IO.File.Copy(sourceFileName?? destFileName?? true);
                return true;
            }
            catch (Exception e)
            {
                throw e;
            }
}

public static void CopyDirectory(string oldDir?? string newDir)
        {
            try
            {
                DirectoryInfo dInfo = new DirectoryInfo(oldDir);
                CopyDirInfo(dInfo?? oldDir?? newDir);
            }
            catch (Exception exc)
            {
                throw new Exception(exc.ToString());
            }
        }

????????????????true/false?????????????г??????????????????????????????????????????????????б????????????????????????????CopyDirectory?У?????????????????????????????±???????????????WinForms??????????????????????

CustomExceptionHandler eh = new CustomExceptionHandler();
            AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CustomExceptionHandler.CurrentDomain_UnhandledException);
            Application.ThreadException += new ThreadExceptionEventHandler(eh.OnThreadException);

????????????????????UnhandledException ??ThreadException ?????????????????з???????????????????????????????????????????????????????????????????????

/// <summary>
        /// ??????????????????????????????
        /// </summary>
        /// <param name="oldFile">????</param>
        /// <param name="newFile">??????</param>
        public static void CopyFile(string oldFile?? string newFile)
        {
            try
            {
                File.Copy(oldFile?? newFile?? true);
            }
            catch (Exception exc)
            {
                throw new Exception(exc.ToString());
            }
        }