description.Attributes("content") = ConfigurationManager.AppSettings("Description")
            keyw.Attributes("keywords") = ConfigurationManager.AppSettings("Keywords")
            robots.Attributes("robots") = ConfigurationManager.AppSettings("Robots")
            revisitafter.Attributes("revisit-after") = ConfigurationManager.AppSettings("RevisitAfter")
            
            Dim metaTag As HtmlMeta = New HtmlMeta
            metaTag.Name = "Reply-to"
            metaTag.Content = ConfigurationManager.AppSettings("EmailPrincipale")
           
            Page.Header.Controls.Add(metaTag)