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public void isWriteable()
        {
            pathC = ConfigurationManager.AppSettings.Get("PathC");
            DirectoryInfo dInfo = new DirectoryInfo(pathC);

            if (Directory.Exists(pathC))
            {
                try
                {
                    DirectorySecurity dSecurity = dInfo.GetAccessControl();
                    Console.WriteLine("Rechte");
                }
                catch (Exception)
                {
                    //throw new UnauthorizedAccessException("Keine Rechte");
                    Console.WriteLine("Keine Rechte");                    
                }
            }
            else
            {
                throw new Exception("Verzeichnis existiert nicht");
            }
        }