Show/hide expression


An expression that, when evaluated, will display or hide the field.


The expression is evaluated for each row. If the expression is true, the control will be shown. Use the special expression syntax, which will be converted automatically to Javascript.

If you prefer to enter a Javascript expression directly, prefix the expression with 'Javascript:'. Your Javascript expression will need to refer to field values using the 'data.' prefix. You can also call a Javascript function that returns true or false. For example: