public void Add()
        {
            if (!IsEdit)
            {
                string x = RankService.Add(Name, Description, Bonus, CanLead, MinExperience);
                if (x == null)
                {
                    TryClose();
                }
                else
                {
                    Error = x;
                }
            }
            else
            {
                toEdit.Name          = Name;
                toEdit.Description   = Description;
                toEdit.Bonus         = Bonus;
                toEdit.CanLead       = CanLead;
                toEdit.MinExperience = MinExperience;

                string x = RankService.Edit(toEdit);
                if (x == null)
                {
                    TryClose();
                }
                else
                {
                    Error = x;
                }
            }
        }