Hi

Take a look at this example: EPiServer 7: Configuring editors for your properties.

Frederik

Thanks, nice functionality . 

Thanks for answer. 

Frederik Vig after creating that functionality I cant open my page in edit mode ? In What a problem?
Thanks advance.

Open up the browser console and see if you see any JavaScript errors that might explain it.

Frederik

Error is [screenshot] http://s2.ipicture.ru/uploads/20130516/HqwhmZou.png

when I comment code, this error is disappeared

Could you try in Firefox using Firebug? I think there are some more errors that'll show up there.

Frederik

No errors in firefox but cms shows that we still go to edit mode http://screencast.com/t/DLBNmrmcU

Console shows only this info http://screencast.com/t/yb6lCnw4y 

And any exception in Visual Studio in debug mode

I think I got some wierd error when I didn't have strings for both value and text properties on the selectitems.

I copied the example. 

    public class LanguageSelectionFactory : ISelectionFactory
    {
        public IEnumerable<ISelectItem> GetSelections(ExtendedMetadata metadata)
        {
            var languages = new List<SelectItem>();
            languages.Add(new SelectItem() { Value = "EN", Text = "English" });
            languages.Add(new SelectItem() { Value = "SW", Text = "Swahili" });
            languages.Add(new SelectItem() { Value = "PF", Text = "French Polynesia" });
            return languages;
        }
    }

I have a hard time seing how setting up a selection list would cause cross site scripting issues. Have you investigating the code that accesses the remote site (http://ct1.addthis.com)? Is this something in your templates, content or UI an extension?

I found the problem. In examples  

ClientEditingClass = "epi.cms.contentediting.editors.CheckBoxListEditor";

replace with

      ClientEditingClass = "epi.cms.contentediting.editors.SelectionEditor";

and it work..