Assembly: System (in System.dll)
Property ValueType: System.ComponentModel.ISite
The ISite associated with the Component, or null if the Component is not encapsulated in an IContainer, the Component does not have an ISite associated with it, or the Component is removed from its IContainer.
A Component will have an ISite if it has been added to an IContainer and the IContainer assigns an ISite to it. The IContainer is responsible for assigning the ISite to the Component. Changing the value of the component's ISite does not necessarily change the name of the site the Component is assigned to. The property should be set only by an IContainer.
A Component might or might not have a name. If a Component is given a name, the name must be unique among other Component objects within its IContainer. The ISite stores the name of the Component; therefore, you can only name a Component if it has an ISite associated with it.