Sets the extended data type of a control.
The value of this property overrides the value of the table field and it converts a text field into one of the following:
Filter (used on reports)
Ratio (to monitor the progress bar)
Masked (displays the value as dots)
Person (displays a media field value as a round picture)
This property affects the layout and behavior of controls on pages. For example, you can use it to add an icon next to an input field to indicate if the field specifies a phone number, email address, or URL. This property applies validation to the field.