C# : How to create a constructor with DateTime as parameter? and how to create an object with this constructor?

Question

I have created a constructor as follows :

public Animal(string regNum, DateTime brought, string name)
{
    this.RegNumber = regNum;
    this.DateBrought = brought;
    this.Name = name;
    this.NameNewOwner = null;
}

And based on the constructor above, I created an object called pet , as follows:

Animal pet = new Animal("a12344", Convert.ToDateTime(23/01/2013), "Fluffy");

However, when I run my program it gives me error saying: Invalid cast from Int32 to DateTime Can anyone help me with this?

Answer 1

Constructor is not a problem. Convert.ToDateTime call is:

Convert.ToDateTime(23 / 01 / 2013);

It's equivalent to Convert.ToDateTime(0) (because 23/1/2013 as integer division returns 0 ), which is not possible.

Use new DateTime(2013, 1, 23) instead.

Animal pet = new Animal("a12344", new DateTime(2013, 1, 23), "Fluffy");

You could also use Convert.ToDateTime("23/01/2013") , which would be equivalent to DateTime.Parse("21/01/2013") parsing, but if you know the date at compile time, you should definitely use DateTime constructor.