Convert String to Nullable DateTime

Question

Possible Duplicate:
How do I use DateTime.TryParse with a Nullable<DateTime>?

I have this line of code

DateTime? dt = Condition == true ? (DateTime?)Convert.ToDateTime(stringDate) : null;

Is this the correct way to convert string to Nullable DateTime, or is there a direct method to convert without converting it to DateTime and again casting it to Nullable DateTime?

Solution 1

You can try this:-

 DateTime? dt = string.IsNullOrEmpty(date) ? (DateTime?)null : DateTime.Parse(date);

Solution 2

You are able to build a method to do this:

public static DateTime? TryParse(string stringDate)
{
    DateTime date;
    return DateTime.TryParse(stringDate, out date) ? date : (DateTime?)null;
}

Solution 3

DateTime? dt = (String.IsNullOrEmpty(stringData) ? (DateTime?)null : DateTime.Parse(dateString));

Solution 4

Simply assigned without cast at all :)

DateTime? dt = Condition == true ? Convert.ToDateTime(stringDate) : null;

View more solutions

Comments

[moribvndvs]

I might suggest string.IsNullOrEmpty(date) rather than date == null.

[bret]

This won't work since date is not a nullable datetime.

[cuongle]

@bret: Did you try this?

[thelem]

That wouldn't work if a string that was neither empty nor a valid date was passed. For better solutions see stackoverflow.com/questions/192121/…