how to validate console input as date?

Question

1.00/5 (1 vote)

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Hi friends,
I want to validate console input for date. For example, if i write year = 1000, it give me a message.
I wrote code like this:
in Main
Birthdate b1 = new Birthdate();
b1.birth=b1.CheckDate( Convert.ToDateTime(Console.ReadLine()));

in Birthdate class

SQL

public DateTime CheckDate(DateTime d)
        {
            if (d.Year < 1990 && d.Month < 1 & d.Day < 1 )
            {
                Console.WriteLine("error");
                d  =DateTime.Parse("0-0-0000" );
                return d;
            }
            else
            {
                return d;
            }
        }

Posted 20-Oct-13 19:56pm

Elham.Deljooei

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Comments

TrushnaK 21-Oct-13 2:01am

if (d.Year < 1990 && d.Month < 1 & d.Day < 1 )
this is not enough condition for validate date.
you have to check year , month > 12 and day according to month.
also consideration for leap year.

Elham.Deljooei 21-Oct-13 2:14am

I've changed it like this:
public DateTime CheckDate(DateTime d)
{

if ((d.Year < 1990 && d.Year > DateTime.Today.Year) && (d.Month < 1 && d.Month > 12) && (d.Day < 1 && d.Day > 31))
{
Console.WriteLine("error");
d =DateTime.Parse("0-0-0000" );
return d;
}
else
{
return d;
}
}
But when i enter 1-1-1000 in console, it calculate birthdate and return answer.

Thanks,
Elham

Richard MacCutchan 21-Oct-13 4:25am

You are using the && operator instead of ||. The year cannot be less than 1990 AND greater than this year.

Elham.Deljooei 21-Oct-13 5:19am

Excuse me,
I've changed it like this:
if ((d.Year < 1990 || d.Year > DateTime.Today.Year) && (d.Month < 1 || d.Month > 12) && (d.Day < 1 || d.Day > 31))
But it don't work truly. :(

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