The DataAggregateFunction type exposes the following members.

Methods

  Name Description
Protected method Static member AsNumber
Converts an object to a double number.
Public method Finish
This method is called when iteration over data scope is finished.

Should be overridden in derived classes.
Public method GetEmptyValue
This method is called when the list of aggregates values is empty.
Protected method Static member IsNull
Tests whether an object represents a null value.
Protected method Static member IsNumber
Tests whether an object represents a number.
Public method Iterate
This method is called for each value in the data scope.

Should be overridden in derived classes.
Public method Reset
This method is called when aggregate calculation starts.

Should be overridden in derived classes.

See Also