public bool isContentExisted()
{
var obj = new { };
Dictionary <String, dynamic> param = new Dictionary <string, dynamic>();
param.Add(SachManager.Properties.TenSach, this.TenSach);
param.Add(SachManager.Properties.TenTacGia, this.TenTacGia);
param.Add(SachManager.Properties.LinhVucSach, this.LinhVucSach.MaSoLinhVuc);
param.Add(SachManager.Properties.NXB, this.NXB.MaSoNXB);
List <Sach> result = SachManager.findBy(param);
if (result.Count > 0)
{
return(true);
}
return(false);
}