function CreateBlobStream(Field: TField; Mode: TBlobStreamMode): TStream; override;
Description
Use this method to obtain TStream reference which you can use to write to and read BLOB from Field argument. Current limit for MEMO values is 64KB.
The Mode parameter determines the access mode. It can be bmRead for reading the field’s value, bmWrite for writing the field’s value, or bmReadWrite for modifying the field’s value.
See TDataSet.CreateBlobStream for more information.