Sorting generic List<>

You can use System.IComparable interface to sort a genric list

class Employee : IComparable {
  private string _firstname;
  private decimal _salary;

  public Employee(string _firstname, decimal _salary) {
    this._firstname = _firstname;
    this._salary = _salary;
  }

  public string FirstName {
    get {
      return _firstname;
    }
    set {
      _firstname = value;
    }
  }

  public decimal Salary {
    get {
      return _salary;
    }
    set {
      _salary = value;
    }
  }

  // Compares the current instance with another object of the same type. (sorts in ascending order)
  public int CompareTo(object obj) {
    Employee Employee = (Employee)obj;
    return
        this.FirstName.CompareTo(Employee);
  }
}

Sorting using IComparable interface:

List<Employee> emp = new List<Employee>();
    emp.Add(new Employee("Bill",80000.1m));
    emp.Add(new Employee("Jeff", 90000.99m));
    emp.Add(new Employee("Kelly", 100000));

    // sort in ascending order
    emp.Sort(delegate(Employee emp0, Employee emp1) {
      return
          emp0.FirstName.CompareTo(emp1.FirstName);
    });


    // sort in descending  order
    emp.Sort(delegate(Employee emp0, Employee emp1) {
      return
          emp1.FirstName.CompareTo(emp0.FirstName);
    });