private IEnumerable <INCategory> GetFolders(int?categoryID)
{
if (categoryID == null)
{
yield return(new INCategory
{
CategoryID = 0,
Description = PXSiteMap.RootNode.Title
});
}
foreach (INCategory item in CategoryCache <INCategory> .GetChildren(this, categoryID))
{
if (!string.IsNullOrEmpty(item.Description))
{
yield return(item);
}
}
}
