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TADDataSet.Data Property
TADDataSet Class  TADDataSet Members  uADCompDataSet Namespace  Example  public  See Also  Send Feedback

Represents the data of the dataset, allowing to copy full data of one dataset into another.

Group

public

Links
TADDataSet Class, TADDataSet Members, uADCompDataSet Namespace, Example, public, See Also
Description

The Data property represents the dataset's internal in-memory data storage. Using this property application can copy current structure and data of one AnyDAC dataset to another AnyDAC dataset. 

The property value is reference to IADDataSet interface. It is reference counted and application does not need explicitly to free it. If application keeps the interface reference using a variable or a field, then reference must be released before dataset will be closed. 

The dataset must be inactive to set this property value, otherwise exception will be raised. After its setting, the Self dataset:

  • has a structure of an original dataset, excluding Indexes, IndexDefs, Filter, etc;
  • has a copy of an original dataset data, including all row versions and states (inserted, deleted, updated, unchanged);
  • has CachedUpdates = True, if an original dataset has unapplied changed;
  • is open.
Syntax
property Data: IADDataSetReference;
See Also
Example
ADQuery1.SQL.Text := 'select * from orders; select * from customers';

ADQuery1.Open;
ADQuery1.FetchAll;
// assign orders records to ADMemTable1
ADMemTable1.Data := ADQuery1.Data;

ADQuery1.NextRecordSet;
ADQuery1.FetchAll;
// assign customers records to ADMemTable2
ADMemTable2.Data := ADQuery1.Data;
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