Adding 60 years in DOB

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Hi In my Windows Form Application there is two columns viz; DOB for which I used three comboBoxes as "dd(comboBox9),mm(comboBox10),yyyy(comboBox11)" and Date of Retirement(textBox3). The DOB entered by the user should automatically show the user's Date of Retirement by adding 60 years to his/her DOB. I have writtem some codes for this operation as

C#

private void comboBox11_SelectedIndexChanged(object sender, EventArgs e)
        {
            DateTime dt = new DateTime();
            //dt = ;
            comboBox9.Text = dt.Day.ToString();
            comboBox10.Text = dt.Month.ToString();
            comboBox11.Text = dt.Year.ToString();

                dt.AddYears(60);
                textBox3.Text = dt.ToString();


        }

By entering the DOB, it shows 01-Jan-01 12:00:00 AM in the Date of Retirement column for every DOB and also changes the DOB column to 1 1 2000. I am unable to find out suitable reason. Please someone help me.

Posted 7-Feb-13 16:16pm

Md M Ahmad

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Renju Vinod · Accepted Answer · 2013-02-07T17:15:00

Solution 1

Please check this.

C#

DateTime dt = new DateTime(Convert.ToInt32(comboBox11.Text), Convert.ToInt32(comboBox10.Text), Convert.ToInt32(comboBox9.Text));
DateTime dt1 = dt.AddYears(60);
textBox3.Text = dt1.ToShortDateString();

Posted 7-Feb-13 17:15pm

Renju Vinod

Updated 7-Feb-13 17:17pm

v2

Rahul Rajat Singh · Accepted Answer · 2013-02-07T17:54:00

The reason for that is you are doing a new on datetime and never using the user selected date. You are just using the default date.

so try doing this instead.

C#

DateTime dt = new DateTime(Convert.ToInt32(comboBox11.Text), Convert.ToInt32(comboBox10.Text), Convert.ToInt32(comboBox9.Text));


               dt.AddYears(60);
               textBox3.Text = dt.ToString();

This should fix the problem.