private void BuildErrorMessages() { try { this.ValidationMessages = new List <string>(); this.AllValidationMessages = string.Empty; if (this.HasError) { this.ValidationMessages = this.Errors .Select(q => q.ErrorMessage) .ToList() ?? new List <string>(); this.AllValidationMessages = string.Join(" \r\n", ValidationMessages.ToArray()) ?? string.Empty; } } catch (Exception e) { } }