how to calculate age ?

Question

can anyone help me . 1)HOW TO CALCULATE AGE AFTER USER ENTERS HIS DOB IN TEXTBOX? 2)HOW TO SUBTRACT BIRTH YEAR WITH CURRENT YEAR.?

Vulpes · Answer

The following assumes that some-one born on 29 February in a leap year celebrates their birthday on 1 March of a non-leap year: DateTime dateBorn; bool isValid = DateTime.TryParse(textBox1.Text out dateBorn); if (isValid && dateBorn { int dt1 = dateBorn.Year * 372 + dateBorn.Month * 31 + dateBorn.Day; DateTime today = DateTime.Today; int dt2 = today.Year * 372 + today.Month * 31 + today.Day; int age = (dt2 - dt1)/372; label1.Text = age.ToString(); int yearDiff = today.Year - dateBorn.Year; label2.Text = yearDiff.ToString(); } else { MessageBox.Show(Textbox doesn't contain a valid date of birth. Please amend); textBox1.Focus(); return; }