public partial class Admin_AddClass : System.Web.UI.Page
{
    Db pn163 = new Db();
    protected void Button1_Click(object sender, EventArgs e)
    {
        

        SqlConnection Conn = new SqlConnection(pn163.strConn);

        string ClassName = TextBox1.Text.Trim();

        string St = TextBox2.Text.Trim();

        Conn.Open();

        SqlCommand Cmd = new SqlCommand("insert into NewClass(Class,St)" + "values('" + ClassName + "','" + St + "')", Conn);

        if (TextBox1.Text == "" && TextBox2.Text == "")
        {
            Response.Write("<script>alert('不能提交空值!');history.go(-1);</script>");
        }
        else
        {
            Cmd.ExecuteNonQuery();
            Response.Redirect("./Class.Aspx");
        }
        Conn.Close();
    }
}
帮帮我看下这个实现什么功能