RadComboBox postback with the same content

[Jhonny]

Hello, how I can make a RadComboBox do postback
That each time you press the ENTER key.

When I have the same content does not postback.

[Princy]

Hi Jhony

Try the following markup and JS to achieve your scenario.
aspx:

<telerik:RadComboBox ID="RadComboBox1" runat="server" OnClientKeyPressing="OnClientKeyPressing" OnClientFocus="OnClientFocus">
    <Items>
        <telerik:RadComboBoxItem Text="001" Selected="true" />
        <telerik:RadComboBoxItem Text="002" />
        <telerik:RadComboBoxItem Text="003" />
    </Items>
</telerik:RadComboBox>

JS:

<script type="text/javascript">
var comboText;
function OnClientFocus(sender, args)
{
    comboText = sender.get_text();
}
function OnClientKeyPressing(sender, args)
{
    if (comboText == sender.get_text())
    {
    //No postback
    }
    else
    {
        if (args.get_domEvent().keyCode == 13)
        {
            __doPostBack();
        }
    }
}
</script>

Thanks
Princy