The ComboBox component implements a combobox that can be used to select value from the list of predefined values.
The component has different properties available in the design mode and in the web form execution mode.
text. Text displayed in the component
name. Component name.
itemIndex. Selected element index.
items. Collection of elements that can be selected in the component.
color. Component background color.
coordinate. Coordinate of the top left corner of the component. Coordinates can be specified in pixels or percents relative to parent component sizes. The property is available if the position property is set to absolute.
flexGrow. The property determines what proportion of container free space can be allocated for the component. If all components are set to 1, container free space is uniformly distributed between the components. If one of the components is set to 2, it occupies two times more free space, and so on. The property is available if the position property is set to relative.
enabled. Indicates whether the component is available for the user.
font. Component text font options. If required, one can load custom fonts.
hint. Tooltip text.
padding. Distance between component borders and component contents. Paddings can be specified in pixels or percents relative to component sizes.
position. Method of component positioning on web form or inside container component. The property is set to absolute by default, the component has fixed position and size determined by the coordinate and size properties. If the property is set to relative, component position and sizes change depending on container component sizes. The coordinate property will be unavailable. Component position will be determined by the flexDirection, aligments, justifyContent properties of the parent component, and component sizes will change if the size property is set in percents.
showHint. Indicates whether a tooltip is displayed when the cursor is hovered over the component.
size. Component sizes. Sizes can be specified in pixels or percents relative to parent component sizes.
visible. Indicates whether the component is visible on running web form.
The component has the onChange event, which can track the selected element.
See also:
Creating a Web Form and Components Layout