Date Validation in ASP.NET C#

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hello everyone..i am doing one e-commerce project.In that i am having problem in one of the page where customer sign up with his personal details.In date of birth column it is taking the values for today and future date also.I want values to be taken if it is earlier to tat day otherwise error should be displayed.How to do this?Please help me in validating date of birth.
Thank You.

Posted 21-Aug-13 0:38am

Member 10194425

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OriginalGriff · Answer 1 · 2013-08-21T00:49:00

Solution 1

C#

DateTime dOB = ...
DateTime now = DateTime.Now;
if (dOB < now)
    {
    ...
    }

You might want to look at this as well, perticularly if you have a minimum age you can accept orders from: Working with Age: it's not the same as a TimeSpan![^]

Posted 21-Aug-13 0:49am

OriginalGriff

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Maciej Los 21-Aug-13 7:07am

Answer as answer, but tip... excellent!

Member 10194425 21-Aug-13 7:22am

what i have to write in that first line?
datetime DOB=...?

OriginalGriff 21-Aug-13 8:37am

Depends on where you get your user info from. If you use a Calendar control then you can get the value directly. If you use a text box (and that is really silly) then you need to use DateTime.TryParse on the text entered, and report any problems back to your user.

I can't fill it in because I can't see your screen, access your HDD or read your mind...:laugh:

Member 10194425 21-Aug-13 7:24am

what i have to write in that first line..?
datetime dob=..?

Member 10194425 21-Aug-13 7:23am

what i have to write in that first line..?
datetime dob=..?

VICK 21-Aug-13 7:46am

in dob you can get the date selected by the user from ur control.. i.e text or calendar control etc......

Anele Ngqandu · Answer 2 · 2013-08-21T20:59:00

Hello

this is how I did mine.

C#

DateTime selectedDOB = Convert.ToDateTime(DatePicker.Text);
        string cDate = DateTime.Now.ToShortDateString();

        DateTime currentDate = Convert.ToDateTime(cDate);
        if (selectedDOB < currentDate)
        {
           //Error message here
           
            
        }

SaqibRasheed · Answer 3 · 2013-08-22T07:51:00

Solution 3

Comparison of both dates will help you solve your issue. .Net allows you to do that comparison easily without any kind of conversions. Look into the this link[^] to get details about the results returned by the comparison of dates.

Posted 22-Aug-13 7:51am

SaqibRasheed