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;
}
}