constants AllowEmptyValueEnum
The AllowEmptyValueEnum type supports the values that the AllowEmptyValue property supports. The AllowEmptyValueEnum type supports the following values.

NameValueDescription
exNoEmptyValue0 No empty value is accepted, so the control displays the control's mask when its content is empty. 
exAllowEmptyValueShowNothing-1 While the control's content is empty, the control's mask is showing as soon as the user starts typing character inside.
exAllowEmptyValueShowMask1 While the control's content is empty, the control's mask is showing as soon as the control gains the focus.