/C#/How to use combo box to find age in c#

How to use combo box to find age in c#

protected void btn_Click(object sender, EventArgs e)
    {
         // here you use your ddl,combobox or etc where age date is inserted
        DateTime dtStart = DateTime.Parse(txtDoB.Text);
        TimeSpan sp = DateTime.Now - dtStart;
        int year = "18";
        int days = 365;
        int total = year * days;

        if (sp.Days < total)
        {

            txtDoB.Text = "Not Valid";
            lblMess.Text = "You can not be under 18 years";
            lblMess.CssClass = "Errr";
            return;
        }
}

Similar codes

0 vote339 views1 answer
Draw on picturebox c#
C#
0 vote320 views1 answer
C# listview filter contains
C#
0 vote321 views1 answer
Mongodb custom IIdGenerator
C#
1 vote343 views1 answer
Repeat 10 timesw c#
C#
1 vote368 views1 answer
Coroutine not eaffected by time.timescale unity
C#Unity
2 votes331 views3 answers
Asp.net core 3.1 ajax partial view
C#
1 vote342 views1 answer
C# AllowSynchronousIO to true
C#
0 vote348 views1 answer
.net core copy directory to output
C#
0 vote320 views1 answer
How to move an object with addforce
C#
1 vote326 views1 answer
C# among us
C#