TADDataSet.SaveToStream Method

Saves a dataset's data to a stream.

Group

Links

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

Parameters	Description
AStream: TStream	A stream to write.
AFormat: TADStorageFormat = sfAuto	A file format.

Description

Call SaveToStream to save the dataset data to an external file.

AStream is the reference to the stream, to which the data to write. The dataset will start to write its data at current stream position.

AFormat is the file format:

sfXML - stream contains a well formed standalone XML data;
sfBinary - stream contains a binary data with custom AnyDAC format;
sfAuto - format is determined by ResourceOptions.DefaultStoreExt if it is specified, otherwise by ResourceOptions.DefaultStoreFormat.

SaveToStream stores into the stream the items specified by the ResourceOptions.StoreItems.

Syntax

procedure SaveToStream(AStream: TStream; AFormat: TADStorageFormat = sfAuto);

Example

var
  oStr: TStream;
  ....
  ADQuery1.Edit;
  oStr := ADQuery1.CreateBlobStream(ADQuery1.FieldByName('data'), bmWrite);
  try
    ADMemTable1.SaveToStream(oStr, sfBinary);
  finally
    oStr.Free;
    ADQuery1.Post;
  end;

What do you think about this topic? Send feedback!