Calculating age by entering date of birth conversion failure

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Hi I have done the below code to calculate my age by filling the date of birth,I get the conversion failure problem

What I have tried:

C#

<pre> protected void Calendar1_SelectionChanged1(object sender, EventArgs e)
       {
            txtDob.Text = Calendar1.SelectedDate.ToString();
            Calendar1.Visible = false;
            int year = DateTime.Now.Year - Calendar1.SelectedDate.Year;
            int months = DateTime.Now.Month - Calendar1.SelectedDate.Month;

            string ageval = ((year - 1) + " years" + (-12 - months) + " months");

            if (months > 12)
            {
                year = year + 1;
            }
            int value = int.Parse(ageval);
            value = (ToString(txtAge.Text)) ;

SQL

Name varchar(50),Department varchar (50),Salary int
 DOJ datetime,DOB datetime,Age int,Country varchar(50),Stat varchar(50),Phone bigint,
 Email varchar(100),Pincode bigint)

Posted 17-Jan-17 20:57pm

Member 12605293

Updated 22-Jan-17 23:00pm

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CPallini 18-Jan-17 3:10am

Please explain better. What is the exact error message (if any)? What is the offending line of code?

2 solutions

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OriginalGriff · Answer 1 · 2017-01-17T21:35:00

Um ... that's some odd code.

C#

string ageval = ((year - 1) + " years" + (-12 - months) + " months");
...
int value = int.Parse(ageval);
value = (ToString(txtAge.Text)) ;

So you load a string with a non-integer value deliberately, then try to convert that to an integer, which you then try to overwrite with a string-ified version of some random user input. And you are surprised when it fails? It won't even compile, unless your ToString method is very, very badly named!

Have a look at this: Working with Age: it's not the same as a TimeSpan![^] - it does all the "legwork" for you.

avinashkumar0509 · Answer 2 · 2017-01-22T23:00:00

protected void Calendar1_SelectionChanged(object sender, EventArgs e)
        {
            int year =Convert.ToInt32(DateTime.Now.Year);
            int month = Convert.ToInt32(DateTime.Now.Month);
            int day = Convert.ToInt32(DateTime.Now.Day);

            int dobYear =  Calendar1.SelectedDate.Year;
            int dobMonth = Calendar1.SelectedDate.Month;
            int dobDate = Calendar1.SelectedDate.Day;

            int ageDay = 0;
            int ageMonth = 0;
            int ageYear = 0;

            if (day >=  dobDate)
            {
                ageDay = day - dobDate;
            }
            else if(day< dobDate)
            {
                // If current Month= Jan, March, May, July, August, Oct, Dec i.e. of 31 days
                if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12)
                {
                    day = day + 31;
                }
                //  if current Month is of 30 days.
                else if (month == 4 || month == 6 || month == 9 || month == 11) 
                {
                    day = day + 30;
                }
                // If Month is February
                else if (month == 2)
                {
                    if(year % 4==0) // if Year is Leap year then Feb will be of 29 days.
                    {
                        day = day + 29;
                    }
                    else
                    {
                        day = day + 28;
                    }
                }
                ageDay = day - dobDate;
                month = month - 1;
            }

            if (month >= dobMonth)
            {
                ageMonth = dobMonth - month;
            }
            else if (month < dobMonth)
            {
                month = month + 12;
                year = year - 1;
                ageMonth = month - dobMonth;               
            }

            ageYear = year - dobYear;
            string sAge = String.Format("{0} Year/s {1} Month/s {2} Day/s", ageYear, ageMonth, ageDay);
            TextBox1.Text = sAge;
       

        }

Calculating age by entering date of birth conversion failure

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