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..