public class CustomHeaderExample : SettingsHeadersWrapperBase
    {
      //Property name specfies what the property is called on the object.  This is not enforced though.
      //You may call it whatever you want.  The main use of this field is specify a Unique Identifier
    public override string PropertyName
    {
        get { return "CanCreateFolio"; }
    }

        //This is the name that is displayed to the user.
    public override string FriendlyName
    {
        get
        {
            return "Can Create Folio";
        }
    }

        //This displays the search values this header uses in the advanced search menu.
    public override List<ISearchHeader> GetPossibleSearchValues(ISiteManager siteManager)
    {
        //It is recommended that you use this method to get all of the predefined Search Options.
        return SearchUtilites.GetSearchInfosByType(DisplayTypes.Boolean);
    }

        //Tests whether x satisfies the search given
    public override bool SatisfiesSearch(ICartellaObject x, ISearchHeader searchInfo, string searchValue, IFolio folio)
    {
        IUser user = x as IUser;
        if (user == null)
        {
            throw new ArgumentException("x must be of type IUser");
        }

        //Make sure that the search expects a boolean
        if (searchInfo.DisplayInfo.Type == DisplayTypes.Boolean)
        {
            //This is the recommended way to perform a search.
            //Of course you could do whatever you wanted here
            return searchInfo.Search(user.CanCreateFolio, searchValue);
        }
        else
        {
            //return a fail safe value
            return false;
        }
    }

    //This displays which setting this header can be used for
    public override SettingsTypes SettingType
    {
        get { return SettingsTypes.User; }
    }

    //This is the comparer function which compares two different Cartella objects.
    //This controls the sort for the grid.  It returns 1 if they are greater, 0 if equal, and -1 if less than.
    public override int Compare(ICartellaObject x, ICartellaObject y, IFolio folio)
    {
        //THis function just compares the display values that are on the grid. 
        return base.StringCompareDisplayName(x, y);
    }

            public override bool CanSort
    {
        get
        {
            return true;
        }
    }

    //Allows clinet side filtering for these headers items
    public override bool CanDoClientSideFilter
    {
        get
        {
            return true;
        }
    }

    //Does not use external template. I will explain later how to use this.
    public override bool NeedExternalTemplate
    {
        get
        {
            return false;
        }
    }

    //Whether this header can be used right now
    public override bool CanBeUsed(SettingsViewType viewType, IFolio folio)
    {
        return true;
    }

        //This gets the value that will be displayed in the grid.
    public override string GetDisplayValue(ICartellaObject x, IFolio folio)
    {
        IUser user = x as IUser;
        if (user == null)
        {
            throw new ArgumentException("x must be of type IUser");
        }

        return user.CanCreateFolio ? "Yes" : "No";
    }
}