DataSet当前行，不是当前选中的行

    int arow = 0;
    arow = cds1->RecNo;
    arow = cds1->RecordCount;
    arow = DBGridEh1->DataRowToRecNo(DBGridEh1->Row);//接近靠谱
    arow = DBGridEh1->TopRow;
    arow = DBGridEh1->TopRowOffset;
    arow = DBGridEh1->DataRowCount();
    arow = DBGridEh1->VisibleRowCount;
    arow = DBGridEh1->Row;//接近靠谱
    arow = DBGridEh1->RowCount;

当grid下拉滚动条时就不准确了