EmptyMessage doesn't show when CheckBoxes is set to true

[Evgeniya]

Hi, 

 

I am using version 2014.3.1209.40 and I have the following combo box:

<telerik:RadComboBox ID="ddCostCenter" runat="server" CheckBoxes="true"  EmptyMessage="Select Cost Center" > </telerik:RadComboBox>

If I remove CheckBoxes="true" the empty message shows on initial load, otherwise it doesn't.

How should I set it up, so EmptyMessage shows on initial load when I have the checkboxes?

Thanks!

 

[Evgeniya]

This behaviour goes away if I specify CheckedItemsTexts="DisplayAllInInput" but I don't want to do that.

 Also, how should I replace the message "All items checked"when all items are checked with my message?

 Thanks.

[Ivan Danchev]

Hello Evgeniya,

The missing empty message on load, when check boxes are enabled, was a bug in the 2014 version of the controls and is not present in the latest official version. If you are using the old version a possible workaround would be to set the empty message in the ComboBox' OnClientLoad client-side event handler as demonstrated below:

<script>
    function OnClientLoad(sender) {
        sender.set_emptyMessage("Select an Item");
    }
</script>

<div>
    <telerik:RadComboBox ID="RadComboBox1" runat="server" CheckBoxes="true" EmptyMessage="Select an Item"
        EnableCheckAllItemsCheckBox="true" OnClientLoad="OnClientLoad">
        <Localization AllItemsCheckedString="My custom message" />
    </telerik:RadComboBox>
</div>

The code snippet also answers your second question showing how you can change the default "All items checked" string.

Regards,
Ivan Danchev
Telerik