public String RemoveTag(int?TagId, int?PoiId)
{
if (!TagId.HasValue || !PoiId.HasValue)
{
return("NOK");
}
ApplicationUser user = bs.GetUser(User.Identity.Name);
PoiTags tag = bs.getPoiTag((int)TagId, (int)PoiId, user.Id);
if (tag == null)
{
return("NOK");
}
bs.DeletePoiTag(tag);
return("OK");
}