private bool Validate(CategoryDTO category) { ValidationService ValService = new ValidationService(); if (string.IsNullOrWhiteSpace(category.Name) || string.IsNullOrWhiteSpace(category.Name_en)) { Success = false; ErrorMessage = "Nazev kategorie nemuze byt prazdny."; return(false); } else if (ValService.CategoryExists(category)) { ErrorMessage = "Kategorie s temito nazvy j*z existuje."; Success = false; return(false); } else { Success = true; ErrorMessage = null; return(true); } }