Question

I am using .net 4.0. I have interface with date time fields like

 DateTime FromDate
    {
        get;
        set;
    }
    DateTime ToDate
    {
        get;
        set;
    }

I want to set the value to this to null in my user interface like

IUser m_user = new User();
  m_user.FromDate = DBNull.value;

In shows error , like cannot convert null to datetime.

How to assign null to datetime?

Thanks ,
pooja

Answer 1

You can’t do that, as DateTime can’t get null value because it’s value type.

One way is changing your code to use Nullable type instead:

DateTime? FromDate
{
    get;
    set;
}

Then it can be null:

m_user.FromDate = null;