cannot convert string to target type system nullable datetime

Question

public DateTime? SubscriptionStartDate { get; set; }

I want the datetime in string format after it has mapped a value:

SubscriptionStartDate = sheet.AUDIT_SHEET_SUBSCRIPTION_START_DATE

But i cant convert it to a string. I get the exception in my topic. I think i need to convert it to a non-nullable datetime object using the ?? operator, but im not sure how, since i never used it.

Answer 1

you need to check it has a value, then you can get the tostring from it. eg:-

if(SubscriptionStartDate.HasValue)
{
    String myValue = SubscriptionStartDate.Value.ToString();
}

Answer 2

It is easy to use + operator

public DateTime? SubscriptionStartDate { get; set; }

string result = "" + SubscriptionStartDate 

Answer 3

Not sure this is a nullable issue per say.

Try (making sure to check for null first):

SubscriptionStartDate.parse( sheet.AUDIT_SHEET_SUBSCRIPTION_START_DATE )

( assuming you are retrieving a string and trying to assign a DateTime.... )