Lists all of the fields that the control can display, divided into the following nodes, which you can expand:
BoundField Use to add individual data fields from those available in the data source.
CheckBoxField Use to add a field bound to a Boolean field in the data source.
HyperLinkField Use to add a field that will contain a link to another page. The hyperlink field can contain static text or display a data field as a hyperlink.
ButtonField Use to add fields that will contain buttons (command buttons or link buttons) that the user can click to perform specific actions for an individual item. You can specify whether to use a Button, LinkButton, or ImageButton control by setting the field's ButtonType property.
CommandField Use to add a field which will contain links that will post back commands, such as Delete, Edit/Update/Cancel, New/Insert/Cancel, and Select.
ImageField Use to add a field that will contain images.
TemplateField Use to create a field that contains any combination of HTML text and controls.
Sets the header text for the new field.
Other field properties
Sets other properties for the field that you specify in the Choose a field type drop-down list.
Refreshes the data in your page in Design view.
This UI element displays only if you have already configured a data source for the control.