how to calculate date of birth given age

Question

how to calculate date of birth given age using textbox to input age

Upendra Pratap Shahi · Answer

DateTime dob = Convert.ToDateTime("1988/12/20"); int age = CalculateOnlyAge(dob); private static int CalculateOnlyAge (DateTime dateOfBirth) { int age = 0; age = DateTime.Now.Year - dateOfBirth.Year; if (DateTime.Now.DayOfYear age = age - 1; return age; } ________________________ If works for you please "Accept Answer"

Carlos kambui · Answer

Calculate date of birth given age

Upendra Pratap Shahi · Answer

What do you want in really? Your problem is solved or not?

Carlos kambui · Answer

now i want to know how to check date of birth given age i.e if you input your age in textbox dtpdop changes automatically

burak seyhan · Answer

However I still believe better tool is datepicker, it's easy to use for question

Upendra Pratap Shahi · Answer

Use below code for calculating your age.. Use datepicker for DOB.. string sDob=TextBox1.Text.ToString().Trim();//1988/12/20 DateTime dob = Convert.ToDateTime(sDob); string text = CalculateYourAge(dob); public string CalculateYourAge(DateTime Dob) { DateTime Now = DateTime.Now; int Years = new DateTime(DateTime.Now.Subtract(Dob).Ticks).Year - 1; DateTime PastYearDate = Dob.AddYears(Years); int Months = 0; for (int i = 1; i { if (PastYearDate.AddMonths(i) == Now) { Months = i; break; } else if (PastYearDate.AddMonths(i) >= Now) { Months = i - 1; break; } } int Days = Now.Subtract(PastYearDate.AddMonths(Months)).Days; int Hours = Now.Subtract(PastYearDate).Hours; int Minutes = Now.Subtract(PastYearDate).Minutes; int Seconds = Now.Subtract(PastYearDate).Seconds; return String.Format("Age: {0} Year(s) {1} Month(s) {2} Day(s) {3} Hour(s) {4} Second(s)", Years, Months, Days, Hours, Seconds); } _________________________________________ If works kindly accept the answer

burak seyhan · Answer

Hi first of all you should use datepicker then use TimeSpan. You need to extraction from selected date to DateTime.Now it equals your answer. Great day..

how to calculate date of birth given age

Answers (7)