写时用这种方式:
ADOQuery1->Close();
ADOQuery1->SQL->Text="Insert into test values(:id,:mydoc)";
ADOQuery1->Parameters->Items[0]->Value=1;
ADOQuery1->Parameters->Items[1]->LoadFromFile("d:\\temp\\aaa.doc",ftBlob );
ADOQuery1->ExecSQL();
读出时用:
ADOQuery1->Close();
ADOQuery1->SQL->Text="select mydoc from test where id=1";
ADOQuery1->Open();
((TBlobField *)ADOQuery1->FieldByName("mydoc"))->SaveToFile("d:\\temp\\aaa1.doc");