Version 94.4.20 
            Called prior to calling Cef.Shutdown, this disposes of any remaining
            ChromiumWebBrowser instances. In WPF this is used from Dispatcher.ShutdownStarted
            to release the unmanaged resources held by the ChromiumWebBrowser instances.
            Generally speaking you don't need to call this yourself.
            
 
    Namespace: 
   CefSharp
    Assembly:
   CefSharp.Core (in CefSharp.Core.dll) Version: 94.4.20.0
 Syntax
Syntaxpublic static void PreShutdown()
public:
static void PreShutdown()
 See Also
See Also