Page.Title, Keywords, Desc

The following sample code, the database would transfer static variables based SEO details. and we show both the default.aspx page and the product.
 Is it true the way I use? What are your suggestions? Thank you.
 
1. function.cs
    public static string sitepar_Site_Keywords = "";
    public static string sitepar_Site_Desc = "";
    public static string sitepar_Site_Title = "";
    public static void GetKeyDescTitle()
    {
        using (SqlConnection conn = Function.conn())
        {
            SqlCommand cmd = new SqlCommand("SELECT * From SettingSEO, conn);
            SqlDataReader dr = cmd.ExecuteReader();
     & ...