Assigning null/Nullable to DateTime in Ternary Operation

Question

I have a statement like

DateTime ? dt = (string1 == string2) ? null; (DateTime)(txtbox.Text);

which I cannot compile. Reason is : null

Answer 1

DateTime? dt = (string1 == string2) ? (DateTime?)null
                                    : DateTime.Parse(txtbox.Text);

Answer 2

you can do it like that:

DateTime ? dt = (string1 == string2) ? new Nullable <DateTime>(): (DateTime)(txtbox.Text);