property Aggregate.Key as String
Indicates the key of the Aggregate object.

TypeDescription
String A String expression that specifies the unique key of the Aggregate object. The Key must contain alpha numeric characters. Any other character is not included in the key.
The Aggregates object holds a collection of Aggregate objects, each object must have an unique key that identifies the Aggregate object. The Name property of the Aggregate object defines the name to be displayed on the control's context menu. The Caption property indicates the HTML caption to be displayed on the column's header when the current Aggregate object is applied to the column. The Key parameter of the Add method can be used to assign a key at adding time.