/// <summary> /// 排序 /// </summary> /// <param name="ID"></param> /// <param name="IsUp"></param> public void Sort(int ID, bool IsUp) { using (var ct = new DS_AlbumDataContext(DbHelperSQL.Connection)) { var md = ct.DS_Album.Single(a => a.ID == ID); ct.ExecuteCommand("update DS_Album set px=(select RowNumber from (select (ROW_NUMBER() OVER (ORDER BY px)) AS RowNumber,id from DS_Album where memberid={0}) as p2 where id=DS_Album.id) where memberid={0}", md.MemberID); if (IsUp) { DS_Album p = ct.DS_Album.Single(a => a.ID == ID); DS_Album p1; if (p.Px > 1) { p1 = ct.DS_Album.Single(a => a.Px == (p.Px - 1) && a.MemberID == md.MemberID); p.Px--; p1.Px++; } } else { DS_Album p = ct.DS_Album.Single(a => a.ID == ID); DS_Album p1; if (p.Px < ct.DS_Album.Where(a => a.MemberID == md.MemberID).Count()) { p1 = ct.DS_Album.Single(a => a.Px == (p.Px + 1) && a.MemberID == md.MemberID); p.Px++; p1.Px--; } } ct.SubmitChanges(); } }
public void Update(DS_Album Album) { using (var ct = new DS_AlbumDataContext(DbHelperSQL.Connection)) { ct.DS_Album.Attach(Album, true); ct.SubmitChanges(); } }
public void Add(DS_Album Album) { using (var ct = new DS_AlbumDataContext(DbHelperSQL.Connection)) { ct.DS_Album.InsertOnSubmit(Album); ct.SubmitChanges(); } }