Name 

Description 

 

Capacity 

Provides access to the internal TList Capacity property. 

 

Count 

Returns the number of items in the collection. 

 

DataSet 

Indicates the dataset that uses the TDefCollection object to manage its definition objects. 

 

HiddenFields 

Determines whether to show the extra hidden columns that may be included to ensure unique records. 

 

ItemClass 

Indicates the class to which the collection's items belong. 

 

Items 

Lists the field definitions that describe each physical field in the dataset. 

 

ParentDef 

References the field definition of the parent field, if there is one. 

 

Updated 

Indicates whether the definition objects in the Items array match the corresponding instantiated objects in the dataset.