Question

I have an DateTime property field in a struct. I’m trying to validate the inputdate to make sure the value entered is not in the future.

i’m using the following code:

public struct Car
{
    public DateTime Year
    {
        get
        {
            return Year;
        }

        set
        {
            if (value > DateTime.Now)
                throw new InvalidOperationException("Date cannot be in the futrure");
            else
                Year = value;
        }
    }
}

When i now try to run this code i keep getting a StackOverflowException with the message “Cannot evaluate expression because the current thread is in a stack overflow state.”

any ideas on why this is, or how to fix this?

-Thanks.

Answer 1

You’re calling a property called Year, whose get accessor calls Year, whose get accessor calls Year… and so on, and so forth, until your stack overflows.

You should create a private field, private DateTime _year, to store the actual value.