public static double ToplamOgrenciKayit(string _kisit)
{
Database database = ((Database)HttpContext.Current.Session["database"]);
double Toplam = 0;
string sinifAdet = @"SELECT SUM(KayitBedeli) AS Toplam FROM dbo.TblOgrenciKayit WHERE 1=1 " + _kisit;
DataTable dtAdet = database.TableDataTable(sinifAdet);
Toplam = MavCore.MConvert.ToDoubleD(dtAdet.Rows[0][0]);
return Toplam;
}