Increases the count of busy objects in the hosted environment by one.
Assembly: System.Web (in System.Web.dll)
Registered objects signal the HostingEnvironment object that it is running and to increase the count of busy objects by one.
If the busy count is greater than zero, the hosting application will not time out even if there are no pending requests.
There must be a call to the DecrementBusyCount method for each call to the method.