public static StudentArray SearchBySurname(String surname, StudentArray studentArray)
{
var searched = new StudentArray();
if (studentArray.Students != null)
{
var studs = studentArray.Cast <Student>().Where(s => s.Surname.ToLower().Contains(surname.ToLower())).Select(s => s);
foreach (var st in studs)
{
searched.Add(st);
}
return(searched);
}
return(new StudentArray());
}
public static StudentArray Search(String predicate, StudentArray studentArray, int category)
{
var searched = new StudentArray();
if (studentArray.Students != null)
{
switch (category)
{
case 0:
{
var studs = from s in studentArray.Students where s.Group.ToLower().Contains(predicate.ToLower()) select s; //отложенное выполнение запроса
foreach (var st in studs)
{
searched.Add(st);
}
break;
}
case 1:
{
var studs = (from s in studentArray.Students where s.Specialty.ToLower().Contains(predicate.ToLower()) select s).ToList(); //принудительное выполнение запроса
foreach (var st in studs)
{
searched.Add(st);
}
break;
}
case 2:
{
var studs = studentArray.Cast <Student>().Where(s => s.Faculty.ToLower().Contains(predicate.ToLower())).Select(s => s); //lambda
foreach (var st in studs)
{
searched.Add(st);
}
break;
}
}
return(searched);
}
return(new StudentArray());
}
