AjaxControlToolkit.MaskedEditExtender.OnPreRender C# (CSharp) Метод

        protected override void OnPreRender(EventArgs e)
        {
            base.OnPreRender(e);

            switch(MaskType) {
                case MaskedEditType.Date: {
                        AcceptAMPM = false;
                        AcceptNegative = MaskedEditShowSymbol.None;
                        DisplayMoney = MaskedEditShowSymbol.None;
                        InputDirection = MaskedEditInputDirection.LeftToRight;
                        break;
                    }
                case MaskedEditType.Time: {
                        AcceptNegative = MaskedEditShowSymbol.None;
                        DisplayMoney = MaskedEditShowSymbol.None;
                        InputDirection = MaskedEditInputDirection.LeftToRight;
                        break;
                    }
                case MaskedEditType.DateTime: {
                        AcceptNegative = MaskedEditShowSymbol.None;
                        DisplayMoney = MaskedEditShowSymbol.None;
                        InputDirection = MaskedEditInputDirection.LeftToRight;
                        break;
                    }
                case MaskedEditType.Number: {
                        AcceptAMPM = false;
                        break;
                    }
                case MaskedEditType.None: {
                        AcceptAMPM = false;
                        AcceptNegative = MaskedEditShowSymbol.None;
                        DisplayMoney = MaskedEditShowSymbol.None;
                        InputDirection = MaskedEditInputDirection.LeftToRight;
                        break;
                    }
            }
            //We Can't rely on the culturename because custom changes may have been made
            // to the culture settings for the page. Only use the CultureName if it is
            // specified in the control
            if(String.IsNullOrEmpty(CultureName)) {
                CultureName = String.Empty;
            }
        }