Ищу пример, где я могу фильтровать коллекцию на основе некоторых критериев фильтрации.
Я искал пример, в котором, задав список / массив, я могу фильтровать коллекцию.
В примере ниже в моем методе find я пытаюсь фильтровать на основе 2 значений, ищу что-то вроде функции "IN", какие-нибудь предложения?
class Program
{
static void Main()
{
//Print all customres that belong to below deparments and match on surname
var criteria=new Criteria
{
Departments = new List<string> {"BusinessAnalyst", "Account"},
Surname = "Bloggs"
};
List<Customer> customers = Repository.Find(criteria);
customers.ForEach(x => Console.WriteLine(string.Format("Surname: {0} Department :{1}", x.Surname,x.Department)));
Console.Read();
}
}
public class Repository
{
public static List<Customer>GetCustomers()
{
return new List<Customer>
{
new Customer { Name = "Jon",Surname="Smith",Department = DepartmentType.Managers},
new Customer{Name = "Bill",Surname = "Gates",Department = DepartmentType.Managers},
new Customer { Name = "Mary",Surname = "Bug",Department = DepartmentType.Developers},
new Customer { Name = "Mark",Surname="Boo",Department = DepartmentType.Account},
new Customer{Name = "Ron",Surname = "Scott",Department = DepartmentType.Managers},
new Customer { Name = "Jonny",Surname = "Dip",Department = DepartmentType.Developers},
new Customer { Name = "Mary",Surname = "Bloggs",Department = DepartmentType.BusinessAnalyst},
new Customer { Name = "Mary",Surname = "Bug",Department = DepartmentType.Account},
new Customer { Name = "Jonny",Surname = "Dip",Department = DepartmentType.Account},
new Customer { Name = "Mary",Surname = "Bloggs",Department = DepartmentType.Managers}
};
}
public static List<Customer> Find(Criteria criteria)
{
List<Customer>customers=Repository.GetCustomers();
//Filter on departments
//ERROR HERE AS I cannot do this "IN" would be fantastic.
customers = customers.Contains(criteria.Departments);
//now filter on name
customers = customers.Where(x => x.Surname == criteria.Surname).ToList();
return customers;
}
}
public enum DepartmentType
{
Account,
Managers,
Developers,
BusinessAnalyst
}
public class Customer
{
public string Name { get; set; }
public string Surname { get; set; }
public DepartmentType Department { get; set; }
}
public class Criteria
{
public Criteria()
{
Departments=new List<string>();
}
public string Name { get; set; }
public string Surname { get; set; }
public List<string> Departments { get; set; }
}