protect

You can use the protect property to prevent users from changing the value of the associated field. The value for this property comes from the ProtectKind enumeration:

noProtect (the default for variable fields)

Allows the user to overwrite the value in the associated field.

skipProtect (the default for constant fields)

Prevents the user from changing the value in the associated field. The cursor skips the field in either of these cases:

• The user is working on the previous field in the tab order and either presses Tab or fills that previous field with content.
• The user is working on the next field in the tab order and presses Shift+Tab.

protect

Prevents the user from changing the value in the associated field. A Tab skips this field; typing stops in the field.