Probably not, you may be able to find something in the ContentType (umbraco.cms.businesslogic.ContentType) class, but I doubt it.

If you do find something, I'd love to know!

Hi, I could not find a function in the core APIs.
But the following works for me in version 6.2.1:

namespace MyDomain.DataTypes
{
     public class MyCustomDataEditor : Control, IDataEditor
    {
        private class PropAndTabNames
        {
            public string TabName { get; set; }
            public string PropName { get; set; }
        }
        private PropAndTabNames GetPropAndTabNames()
        {
            PropAndTabNames rVal = null;
            int nodeId = 0;
            if (int.TryParse(UmbracoContext.Current.HttpContext.Request.QueryString["id"], out nodeId) 
                && nodeId > 0)
            {
                var contentService = ApplicationContext.Current.Services.ContentService;
                var content = contentService.GetById(nodeId);
                var tabs = content.ContentType.PropertyGroups;
                foreach (var tab in tabs)
                {
                    var props = tab.PropertyTypes;
                    foreach (var prop in props)
                    {
                        if (this.ID == "prop_" + prop.Alias)
                        {
                            rVal = new PropAndTabNames();
                            rVal.TabName = tab.Name;
                            rVal.PropName = prop.Name;

                            break;
                        }
                    }
                }
            }
            return rVal;
        }
...
protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);
        ...
            var propTabNames = GetPropAndTabNames();
        ...
}
    }
}

Of course the rest of the DataEditor code is omitted;-)

Yours
Dirk 

@Fernando: Sorry I have ignored that you are using version 4.5.2. The solution might by similar with the old API. You'll find a description on stackoverflow.com:

http://stackoverflow.com/questions/13334319/getting-all-the-properties-on-tab-in-umbraco

Dirk

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