Sitefinity CMS API exposes several overloaded methods, which you can use to trigger a restart of your Sitefinity CMS application. To do a restart, you can use the following code:
In the code above you initiate an application restart by calling the RestartApplication() method of the SystemManager class. You can specify the restart reason, the type of restart you want to perform, and whether or not to send the restart application system message.
Using SystemRestartFlags enumeration, you specify the type of restart. It has the following values:
Cleans the application cache and reinitializes the system.
Unloads the application from the application domain.
Resets the database model by forcing the metadata containers for each opened connection to be recreated.