BLLCollectioncustomers = new BLLCollection (); customers.Add(new Customer{FirstName = "John", LastName = "Doe", Age = 25}); customers.Add(new Customer{FirstName = "Jane", LastName = "Doe", Age = 30}); // Retrieve all customers older than 27 var olderCustomers = customers.Where(c => c.Age > 27);
public class Employee { public int Id { get; set; } public string Name { get; set; } public int Age { get; set; } } public class EmployeeBLL : BaseBLLIn this example, we create a custom business logic layer for the Employee class by inheriting from the BaseBLL class provided by the BLLCollection package. We also add a custom method to validate employee data before adding it to the collection. Overall, the BLLCollection package provides a great set of tools for managing collections of objects in C#. It is suitable for use in a variety of projects, from simple data operations to more complex business logic implementations.{ public bool Validate(Employee employee) { if (employee.Age < 18) return false; return true; } } // Usage EmployeeBLL employeeBLL = new EmployeeBLL(); Employee employee = new Employee{ Name = "John", Age = 16 }; if (employeeBLL.Validate(employee)) { employeeBLL.Add(employee); }