ordering a list in C#

I have a list of Employee objects .Employee Class can be as below:

Class Emplyoyee
{
开发者_如何学Go    public string name;
    public string DateOFJoining; //Please note here date is in string format
}

Now i want to display the list of employee with latest employee on top so am using below code for it :

List<Employee> lst = GetEmployes();          
lst = lst.OrderByDescending(x => x.DateOFJoining).ToList();

//Here binding to the repeater
rptEmp.DataSource = lst.Take(2);
rptEmp.DataBind();

Problem: Here its ordering treating date as string .But i want to order by date.Can anyone help me on this?

Thanks in advance.

---

You would need to convert x.DateOfJoining into a DateTime in the OrderByDescending expression. If you're confident in the quality of your dates, you could try:

lst = lst.OrderByDescending(x => DateTime.Parse(x.DateOfJoining)).ToList();

---

You can have Employee implement the System.IComparable interface. and then just use the List.Sort() method to order the employees.

for example:

Class Employee : IComparable
{
    public string name;
    public string DateOFJoining; //Please note here date is in string format

    public int CompareTo(object obj) {
        if(obj is Employee) {
            Employee= (Employee) obj;

            return Convert.ToDateTime(DateOfJoining).CompareTo(Convert.ToDateTime(e.DateOfJoining));
        }

        throw new ArgumentException("object is not an Employee");    
    }
}