With fileUpload, Show images in GridView without Database in asp.net C#

Show images in GridView using fileUpload and without Database in asp.net C#
you can implement as database also,
here i implement to calculate age using Date of birth bod datepicker

View Part - WebForm1.aspx

Code Part - WebForm1.aspx.cs

protected void Button1_Click(object sender, EventArgs e)
        {
           string spath = "~/images/" + FileUpload1.FileName;
            FileUpload1.SaveAs(Server.MapPath(spath));
            DataTable dt = new DataTable();
            DataColumn dc1 = new DataColumn("image");
            dt.Columns.Add(dc1);
            DataRow dr1 = dt.NewRow();
            dr1[0] = spath;
            dt.Rows.Add(dr1);
            GridView1.DataSource = dt;
            GridView1.DataBind();
            age.Text = (DateTime.Today.Year - Convert.ToDateTime(dob.Text).Year).ToString();
        }