RAD Studio VCL Reference
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TAggregateField Class
TAggregateField Methods | TAggregateField Properties | TAggregateField Members | DB | Description | See Also
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TAggregate field represents a maintained aggregate in a client dataset.

Class Hierarchy
Pascal
TAggregateField = class(TField);
C++
class TAggregateField : public TField;
File

DB

Description

TAggregateField represents an aggregate value from a client dataset in a form that can be used by data-aware controls. Use the Fields Editor on a ClientDataSet to create a persistent aggregate field to which a TDBText control can bind. 

As with TAggregate, TAggregateField has an Expression property that represents a calculation summarizing the data in a set of records. When using aggregate fields, you do not need to explicitly create the corresponding aggregate object in the client dataset: the Fields editor creates that object when you create a persistent aggregate field. 

 

See Also
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