NumericTextBox 'null' is null or not an object

[Gilberto Anino]

Hi, I'm trying to get a numerictextbox from client. I always get the message "Microsoft JScript runtime error: 'null' is null or not an object"

My JAVASCRIPT

<div id="Div1" runat="server">
<script language="javascript" type="text/javascript">

function Itinerario()
{

     var CUENTAS = $find('<%=TxtNroCtas.ClientID%>');

    if (document.getElementById('RBTipoItinerario_0').checked==true)
    {
        div = document.getElementById('HORARIOS');
        div.style.display='';
        CUENTAS.set_visible(false);

    }

    if ( document.getElementById('RBTipoItinerario_1').checked==true)
    {
        div = document.getElementById('HORARIOS');
        div.style.display='none';
        CUENTAS.set_visible(true);
    }

}


</script>
</div>

My INPUT

<telerik:RadNumericTextBox ID="TxtNroCtas" Runat="server" Skin="Office2007">
   <NumberFormat DecimalDigits="0" GroupSeparator="" />
</telerik:RadNumericTextBox>

[Princy]

Hi Gilberto,

The above code worked fine for me.

How are you calling the client function 'Itinerario()'? I guess you are invoking the function from code behind, if so you need to add a Sys.Application.Load handler, which is to ensure calling event only after rendering the control on page.

C#:

ScriptManager.RegisterStartupScript(this, this.GetType(), "inlinesetfocus", "function f() { Itinerario(); Sys.Application.remove_load(f);} Sys.Application.add_load(f); ", true);

Could you provide some more information about calling the method, if this does not help?

Regards,
Princy.

[Gilberto Anino]

Well, I add an attribute to my control in my Load Page event .... I have a RadioButtonList on my page and I want to execute de script when the user choose an item of it. The rest of the script works fine... my only problem is when I try to hide de numericTextBox.

CODE

 protected void Page_Load(object sender, EventArgs e)
    {

        this.RBTipoItinerario.Attributes.Add("onclick", "Itinerario();");
     }

Thanks for helping me and sorry for my bad english!!!

[Dimo]

Hi Gilberto,

I don't see anything wrong with your code. If you need further assistance, please send a complete runnable page.

Greetings,
Dimo
the Telerik team

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