I was running on a bit older version of telerik, but now I upgraded to the most resent version get_value() on radtextbox don't work anymore!
get_value always return an empty string except when make the focus on another control and then I return in this one.
<telerik:RadTextBox ID="txtRecherche" runat="server" Width="335px" style="margin: 10px 0px;" onkeyup="visibilite()"></telerik:RadTextBox> <script type="text/javascript"> function visibilite() { var chaine = $find("<%= txtRecherche.ClientID %>").get_value(); }</script>get_value always return an empty string except when make the focus on another control and then I return in this one.