[Solved] add items on client

[Michael Tissington]

I get an error when trying to add more than one item to the combo.

Microsoft JScript runtime error: 'get_childListElement()' is null or not an object

My code is like the following

...
rcb.trackClientChanges();
items = rcb.get_items();
items.clear();
newItem = new Telerik.Web.UI.RadComboBoxItem();
newItem.set_text("yesterday");
items.add(newItem);
newItem.set_text("today");
items.add(newItem);
rcb.commitClientChanges();
...

[Nikolay]

Hi Michael Tissington,

The problem is that you add the same item twice. You should create a new item and add it like:

 var rcb = $find("<%=RadComboBox1.ClientID %>");
            rcb.trackClientChanges();
            items = rcb.get_items();
            items.clear();
            newItem = new Telerik.Web.UI.RadComboBoxItem();
            newItem.set_text("yesterday");
            items.add(newItem);

            newItem1 = new Telerik.Web.UI.RadComboBoxItem();
            newItem1.set_text("today");
            items.add(newItem1);

            rcb.commitClientChanges();

Hope this helps.

Best wishes,
Nick
the Telerik team

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[Michael Tissington]

This does not help, I get the same error. I can only add one item.

[Nikolay]

Hi Michael Tissington,

Attached, please find a small and running project on the matter.

Please download the files and give them a go.

Hope this helps.

Regards,
Nick
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center