Create An Age Calculator Using C# Application

Step 2

Click OK button, which redirects you to the Next Page, where you are able to create a page.

Step 3

Change the form text property of an Age Calculator, because we don’t want our Application to have the title Form1 when it starts.

Step 4

Design your page accordingly and add a tooltip in the page given below.

Step 5

Change the button name and change all textBox names. Afterwards, double click on the button and write down the code.

private void btnCalculateAge_Click(object sender, EventArgs e) {
DateTime dateOfBirth;
DateTime.TryParse(txtDOB.Text, out dateOfBirth);
DateTime currentDate = DateTime.Now;
TimeSpan difference = currentDate.Subtract(dateOfBirth);
DateTime age = DateTime.MinValue + difference;
int ageInYears = age.Year - 1;
int ageInMonths = age.Month - 1;
int ageInDays = age.Day - 1;
txtAgeInYear.Text = (ageInYears).ToString();
txtAgeInMonth.Text = (ageInMonths).ToString();
txtAgeInDays.Text = (ageInDays).ToString();
}
private void btnCalculateAge_MouseMove(object sender, MouseEventArgs e) {
toolTip1.SetToolTip(this.btnCalculateAge, "Enter to Calculate Your Age");
}
private void txtDOB_MouseHover(object sender, EventArgs e) {
toolTip1.SetToolTip(this.txtDOB, "Enter your Birth Date");
}
private void btnExit_Click(object sender, EventArgs e) {
Application.Exit();
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e) {
DialogResult result;
result = MessageBox.Show("Do you realy want to close", "Confirmation", MessageBoxButtons.YesNo);
if (result == DialogResult.No) {
e.Cancel = true;
}
}

Once you enter the Date of Birth, It will show you the current age

Example : My Date of Birth : 03/06/1991

Output: 25 years 11 months 13 days