Report report = new Report();
string path = Application.StartupPath + @"\Report\report.frx";
Report report = new Report();
string path = Application.StartupPath + @"\Report\report.frx";
var v = from r in dt.Rows.Cast<DataRow>()
where r["Stay_day"].ToString() != "" && Convert.ToInt32(r["Stay_day"].ToString()) > Stay_day