Joseph Michael Pesch
VP Programming

Restart IIS Web Site from C# Code

by 24. April 2016 04:58

In some cases I have setup caching on the website for items such as menus, header, footer, etc.  However, when there is a CMS in place on the site and a user changes any of that relevant content there needs to be a way to reset the web cache.  One easy way is to force the IIS web site to restart by making a benign change in the web.config file, which will automatically force the restart.  Below is a sample version of code to do this, where I update an otherwise unused entry in the web.config that just indicates the last date/time of restart request by the user.  In the case of an MVC application I put this into a controller with some specific route provided to the CMS users so they can navigate to that route after making CMS changes that need to be updated in the cache.  As a side note, using this method will require granting write access to the web.config file for the IIS application pool user (by default "IIS AppPool\WebSiteName" user).

    public static void RestartWeb()
    {
      var configuration = WebConfigurationManager.OpenWebConfiguration("~");
      var section = (AppSettingsSection)configuration.GetSection("appSettings");
      section.Settings["LastRestart"].Value = 
        DateTime.Now.ToShortDateString() + " " + DateTime.Now.ToLongTimeString();
      configuration.Save();
    }

Tags:

ASP.Net | C#

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