求助~用sqlquery往数据库插入二进制出现内存错误

Delphi(Pascal) code

function TServerMethods1.UploadPic(uName: string; uPortrait: TStream): Boolean;//上传图片const  BufSize = 51200;var  Stream: TStream;  MS: TMemoryStream;  Buffer: TBytes;  ReadCount: Integer;begin  Result := False;  Stream := uPortrait;  try    MS := TMemoryStream.Create;    if Stream.Size < -1 then    begin      SetLength(Buffer, BufSize);      repeat        ReadCount := Stream.Read(Buffer[0], BufSize);        if ReadCount > 0 then          MS.Write(Buffer[0], ReadCount);      until ReadCount < BufSize;    end    else      MS.CopyFrom(Stream, 0);      MS.Position := 0;      MS.SaveToFile('c:\users\fky\desktop\123.bmp');     // 上面的都ok    try      with sqlqry_Pic do      begin        Close;        SQL.Clear;        SQL.Add('update t_User set u_Portrait = :p_Portrait where u_Name = :p_Name');        TBlobField(Params.ParamByName('p_Portrait')).LoadFromStream(MS);       //  就是到上面这行,出现内存错误了        Params.ParamByName('p_Name').Value := uName;        ExecSQL(False);        Result := True;      end;    except      Result := False;    end;  finally    MS.Free;  end;end;

Delphi(Pascal) code

  SQL.Clear;  SQL.Add('update t_User set u_Portrait =:p_Portrait where u_Name = :p_Name');  // 加一行，刷新一下参数，好像是Paramters还是Params自己试  Params.Refresh;  TBlobField(Params.ParamByName('p_Portrait')).LoadFromStream(MS);  //  就是到上面这行,出现内存错误了  Params.ParamByName('p_Name').Value := uName;