property MaskEdit.AllowBeep as Boolean
Specifies whether the control plays a beep once the user enters any invalid character.

TypeDescription
Boolean A Boolean expression that specifies whether the control beeps once the user enters any invalid character.
By default, the AllowBeep property is False. Use the AllowBeep property to let control beeps once the user enters any invalid character. Use the Warning property to specify a HTML tooltip to be shown at the cursor position when user enters an invalid character. Use the Invalid property to specify a HTML tooltip to keep the control focused while the user enters an inappropriate value for the field.