Calculate age In C#

Question

Please can you help me in console application.
How to calculate age from DOB

class Personal{
public DateTime DateOfBirth { get; set; }
public string Age { get; set; }
}

Personal per=new Personal();
Console.WriteLine("Enter the Date Of Birth :",per.DateOfBirth);
per.DateOfBirth = DateTime.Parse(Console.ReadLine());

public string GetAge(DateTime DateOfBirth)
{
}

How can i write for function to calculate age from DOB and display

Console.WriteLine("The DOB is" +DateOfBirth);
Console.WriteLine("the Age is ...." +Age);

DOB is 04/02/1994
i want display age is 19 years, 6 months, and 9 days

Thanks.

Sanjeeb Lenka · Answer

try this one: using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace IfExample { class DateTimeExtensions { public string ToAgeString( DateTime dob) { DateTime dt = DateTime.Now; int days = dt.Day - dob.Day; if (days { dt = dt.AddMonths(-1); days += DateTime.DaysInMonth(dt.Year dt.Month); } int months = dt.Month - dob.Month; if (months { dt = dt.AddYears(-1); months += 12; } int years = dt.Year - dob.Year; return string.Format({0} year{1} {2} month{3} and {4} day{5} years (years == 1) ?  : s months (months == 1) ?  : s days (days == 1) ?  : s); } static void Main() { DateTimeExtensions obj = new DateTimeExtensions(); Console.WriteLine(Enter your date of birth in dd/MM/yyyy format to calculate age); string strDate = DateTime.ParseExact(Console.ReadLine() dd/MM/yyyy null).ToString(MM/dd/yyyy); DateTime dob = DateTime.Parse(strDate); string s = obj.ToAgeString(dob); Console.WriteLine(s); Console.ReadLine(); } } }

Sanjeeb Lenka · Answer

try this code: using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace IfExample { class DateTimeExtensions { public string ToAgeString(DateTime dob) { DateTime dt = DateTime.Now; int days = dt.Day - dob.Day; if (days { dt = dt.AddMonths(-1); days += DateTime.DaysInMonth(dt.Year dt.Month); } int months = dt.Month - dob.Month; if (months { dt = dt.AddYears(-1); months += 12; } int years = dt.Year - dob.Year; return string.Format({0} year{1} {2} month{3} and {4} day{5} years (years == 1) ?  : s months (months == 1) ?  : s days (days == 1) ?  : s); } static void Main() { DateTimeExtensions obj = new DateTimeExtensions(); Console.Write(Enter the Birth of year : ); int year = int.Parse(Console.ReadLine()); Console.Write(Enter the Birth of month : ); int month = int.Parse(Console.ReadLine()); Console.Write(Enter the Birth day: ); int day = int.Parse(Console.ReadLine()); string s = month + / + day + / + year; DateTime dob = DateTime.Parse(s); string s2 = obj.ToAgeString(dob); Console.WriteLine(s2); Console.ReadLine(); } } }

Zainal Abidin · Answer

I'm Sorry I want to learn would you like to explain how do you think or how the logical of this source code i just newbie

Zainal Abidin · Answer

I'm Sorry I want to learn would you like to explain how do you think or how the logical of this source code i just newbie

B · Answer

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO; namespace Datetmes { class Program { static void Main() { Console .WriteLine( Enter your Date Of Birth As Year Month and Date ); String s = Console .ReadLine(); int [] dob = new int [3]; String [] a = s.Split( '.' ); for ( int i = 0; i dob[i] = Int32 .Parse(a[i]); DateTime dt = new DateTime (dob[0]dob[1] dob[2]); Console .WriteLine( Enter Required Date As Year Month and Date ); String t = Console .ReadLine(); int [] tod = new int [3]; String [] b = t.Split( '.' ); for ( int j = 0; j tod[j] = Int32 .Parse(b[j]); DateTime dt1 = new DateTime (tod[0] tod[1] tod[2]); ShowDifference(dt dt1); Console .WriteLine(); Console .ReadLine(); } static void ShowDifference( DateTime start DateTime end) { // if (start > end) { // throw new ArgumentException(); } // See comment at the end int years = end.Year - start.Year - 2; while (start.AddYears(years) { years++; } years--; // Console .WriteLine( {0} years  years); start = start.AddYears(years); int months = 0; while (start.AddMonths(months) { months++; } months--; //Console .WriteLine( {0} months  months); start = start.AddMonths(months); int days = 0; while (start.AddDays(days) { days++; } days--; //Console .WriteLine( {0} days  days); Console .WriteLine(); //Console.WriteLine(); Console.WriteLine(Your age is: {0} Year(s) {1} Month(s) {2} Day(s)  yearsmonthsdays); } } } // ABOVE CODE IS WORKING .Enter the date like this 1993.10.22

Iftikar Hussain · Answer

Hi Try like this public string GetAge (DateTime DateOfBirth) { TimeSpan dateDiff = DateTime.Now - DateOfBirth ; DateTime age = new DateTime(dateDiff.Ticks); int years = age.Year - 1; int month = age.Month - 1; int days = age.Day - 1; string result = String.Format({0} years {1} months {2} days years month days); return result; } Regards Iftikar

Joxin Stanly · Answer

in your existing code change DateTime DOB = new DateTime(day month year); to DateTime DOB = new DateTime(yearmonthday );

Vijay · Answer

Thanks Sanjeeb Lenka ... I tried like this Console.Write(Enter the Birth of year : ); int year = int.Parse(Console.ReadLine()); Console.Write(Enter the Birth of month : ); int month = int.Parse(Console.ReadLine()); Console.Write(Enter the Birth day: ); int day= int.Parse(Console.ReadLine()); DateTime DOB = new DateTime(day month year); dateOfBirth = DOB; i cant get it...

Vijay · Answer

Hi sir Console.WriteLine(Enter the DOB (dd/mm/yyyy)); DateTime dob = DateTime.Parse(Console.ReadLine()); I want to enter date is day-month-year format... for that how i want to declare

Sanjeeb Lenka · Answer

hi try this code ex: using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace IfExample { class DateTimeExtensions { public string ToAgeString( DateTime dob) { DateTime dt = DateTime.Now; int days = dt.Day - dob.Day; if (days { dt = dt.AddMonths(-1); days += DateTime.DaysInMonth(dt.Year dt.Month); } int months = dt.Month - dob.Month; if (months { dt = dt.AddYears(-1); months += 12; } int years = dt.Year - dob.Year; return string.Format({0} year{1} {2} month{3} and {4} day{5} years (years == 1) ?  : s months (months == 1) ?  : s days (days == 1) ?  : s); } static void Main() { DateTimeExtensions obj = new DateTimeExtensions(); Console.WriteLine(Enter your date of birth in mm/dd/yyyy format to calculate age); DateTime dob = DateTime.Parse(Console.ReadLine()); string s = obj.ToAgeString(dob); Console.WriteLine(s); Console.ReadLine(); } } }