/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

1 vote123 views1 answer
Get both item and index in c#
C#
7 votes148 views2 answers
How to make a character move in unity 3d
C#Unity
0 vote125 views2 answers
C# check multiple variables for null
C#
0 vote121 views2 answers
C# getforegroundwindow
C#
2 votes110 views1 answer
C# list.foreach
C#
7 votes119 views2 answers
How to convert int to float in c#
C#
1 vote119 views1 answer
C# remove accents
C#
7 votes116 views6 answers
C# empty array
C#
0 vote154 views1 answer
Unity product.hasreceipt
C#Unity
1 vote135 views1 answer
Get string name of dropdown in unity
C#Unity