Unit: dbisamtb

Inherits From TStream

Use the TDBISAMBlobStream object to access or modify the contents of a BLOB field in a dataset using a stream interface. BLOB fields include TBlobField objects and descendants of TBlobField such as TGraphicField and TMemoField objects. TBlobField objects use streams to implement many of their data access properties and methods via the standard CreateBlobStream method that is implemented by the DBISAM dataset components.

To use a TDBISAMBlobStream object, create an instance of TDBISAMBlobStream, use the methods of the TDBISAMBlobStream object to read or write the data, and then free the object. Do not use the same instance of a TDBISAMBlobStream object to access data from more than one record. Instead, create a new TDBISAMBlobStream object every time you need to read or write BLOB data for a record.