public static void Encrypt(){

           Configuration objConfiguration = null;

           if(HttpContext.Current!=null)        //if we are in web application of some sort

               objConfiguration = WebConfigurationManager.OpenWebConfiguration (“~”);

           else       ///if not web

                objConfiguration = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

           ConfigurationSection objSection = “connectionStrings”;

           //if encrypted already don’t do it again

           if(objSection!=null && !objSection.SectionInformation.IsProtected){

                           objSection.SectionInformation.ProtectionSection(string.Empty);

                           objSection.SectionInformation.ForseSave = true;

                          objConfiguration.Save(ConfigurationSaveMode.Full);

           }     

}

 

public static void Encrypt(){

                     Configuration objConfiguration = null;

                       if(HttpContext.Current!=null) //if we are in web application of some sort

                                   objConfiguration = WebConfigurationManager.OpenWebConfiguration (“~”);

                       else ///if not web

                                    objConfiguration = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

                      ConfigurationSection objSection = “connectionStrings”;

                           //if encrypted then decrypt

                            if(objSection!=null && !objSection.SectionInformation.IsProtected){

         objSection.SectionInformation.UnprotectSection();

  //objConfiguration.Save();  – you can save the change but it will reset all the global data of your application in iis (relevant to comment it for web applications,can stay on in others)

}

}