The ComboBox component is a drop-down list.
The ComboBox component is implemented by the ComboBox class.
Dropdown menu looks as follows:
Opens panel by clicking the button with an arrow. To change the panel size move the cursor over the border and drag it when the double arrow appears. The scrollbar appears when all the list items are not displayed because of the panel size:
NOTE. Consider the following features when working with Internet Explorer: the drop-down panel is closed if the cursor is hovered over the scrollbar, the mouse button is held down and the cursor is moved to the list item.
Example of Creating the ComboBox Component
Constructor name | Brief description | |
ComboBox | The ComboBox constructor creates an instance of the ComboBox component. |
Property name | Brief description | |
AutoFind | The AutoFind property determines whether autosearch is available. | |
SelectedIndex | The SelectedIndex property determines index of the selected list element. |
Method name | Brief description | |
clearSelection | The clearSelection method removes selection from elements of the ComboBox component. | |
filterByText | The filterByText method filters elements by string. | |
getListBox | The getListBox method returns the ListBox component. |
Property name | Brief description | |
CloseOnContentClick | The CloseOnContentClick property determines whether a component panel can be closed on clicking the header. | |
EnableEdit | The EnableEdit property sets the ability of input. | |
IsDropHasCombosWidth | The IsDropHasCombosWidth property sets whether drop-down panel width does not depend on the input editor width. | |
IsHint | The IsHint property determines whether a tooltip is displayed on the mouse hover on the button for opening of the drop-down panel. | |
NoCreateEditors | The NoCreateEditors property determines whether the header is displayed as a simple text and not in the editors of the TextBox or MaskEdit components. | |
OpenOnContentClick | The OpenOnContentClick property determines whether a component panel can be opened on clicking the header. | |
OpenOnIconClick | The OpenOnIconClick property determines whether a component panel can be opened on clicking the header icon. | |
OpenOnKeyDown | The OpenOnKeyDown property determines whether a pop-up panel can be opened on clicking a keyboard key. | |
UseMask | The UseMask property sets whether the editor mask can be used. |
Method name | Brief description | |
applyNotValidCSS | The applyNotValidCSS method sets the style that determines highlighting invalid input value of the input editor. | |
applyValidCSS | The applyValidCSS property sets the style that determines highlighting of valid input value of the input editor. | |
getContentNode | The getContentNode method returns the DOM node of the input editor component. | |
getDropPanel | The getDropPanel method returns the drop-down part of the component. | |
getIconHeight | The getIconHeight method returns value of input editor icon height. | |
getIconWidth | The getIconWidth method returns value of input editor icon width. | |
getMaskEdit | The getMaskEdit method returns data input editor for data corresponding to a specific template. | |
getTextBox | The getTextBox method returns text box of the input editor. | |
setIconImageClass | The setIconImageClass method changes class name of the input editor component icon. | |
showDropPanel | The showDropPanel method displays component's drop-down part. |
Event name | Brief description | |
TextChanged | The TextChanged event occurs on changing text in the editor. | |
ValueChanged | The ValueChanged event occurs after changing input editor contents. |
Property name | Brief description | |
Anchors | The Anchors property determines position of the component placed within container. | |
Animation | The Animation property determines component animation parameters. | |
Bottom | The Bottom property determines a bottom margin if a component is placed inside LayoutPanel. | |
Content | The Content property determines component contents. | |
ContextMenu | The ContextMenu property determines a component's context menu. | |
Data | The Data property is used to store any custom data. | |
Enabled | The Enabled property determines whether a component can be used. | |
Height | The Height property determines component height. | |
IsRTL | The IsRTL property determines whether component elements are aligned to the right. | |
IsVisible | The IsVisible property determines whether a component is displayed. | |
Left | The Left property determines a left margin if a component is placed inside GridPanel. | |
Opacity | The Opacity property determines component transparency. | |
Parent | The Parent property determines a parent component of a control. | |
ParentNode | The ParentNode property determines a parent DOM node. | |
ResourceKey | The ResourceKey property determines a component resource key. | |
Right | The Right property determines a right margin if a component is placed inside LayoutPanel. | |
Rotate | The Rotate property determines a component rotation angle. | |
ShowToolTip | The ShowToolTip property determines whether a tooltip of the component can be displayed. | |
Style | The Style property determines a component style. | |
TabIndex | The TabIndex property determines the order of the control element passing inside the container. | |
Tag | The Tag property determines a JSON object associated with the component. | |
ToolTip | The ToolTip property determines text of component tooltip. | |
Top | The Top property determines a top margin if a component is placed inside GridPanel. | |
Value | The Value property determines a component value. | |
Width | The Width property determines component width. |
Method name | Brief description | |
The addClass method adds a CSS class to the component. | ||
addEventHandler | The addEventHandler method adds an event handler to a DOM node. | |
The addStateClass method adds a CSS class to the component and removes the previous CSS class. | ||
The addToNode method adds a component to the specified node. | ||
bindEvents | The bindEvents method subscribes an element to all available events. | |
The getAnchorFlags method returns JSON object that contains settings of the current component's position. | ||
The getClass method returns the current CSS classes of the component. | ||
The getCssStyle method returns style for the specified node. | ||
The getDomNode method returns main DOM node of the component. | ||
The getFocused method determines whether the component is focused. | ||
getIsBinded | The getIsBinded method returns whether an element is subscribed to all DOM node events. | |
The hide method hides a control. | ||
The hideToolTip method clears tooltip timeout and hides the tooltip if it is shown. | ||
refreshStyle | The refreshStyle method refreshes element CSS styles. | |
The removeClass method removes CSS class from the component. | ||
removeEventHandler | The removeEventHandler method removes event handler from DOM node. | |
removeFromDOM | The removeFromDOM method removes node from the DOM structure. | |
The removeStateClasses method removes CSS classes of the component. | ||
The setDraggable method determines whether a component can be dragged on the HTML page. | ||
The setFocus method sets the component focus. | ||
The setIsHovered method sets up component displaying only on mouseover. | ||
The setSize method establishes the sizes of the component. | ||
The show method displays a control. | ||
unBindEvents | The unBindEvents method unsubscribes an element from all standard events. | |
The updatePosition method updates size and position when absolute positioning based on the current parameters is used. | ||
The updateSize method updates the component size on changing the size of the container that contains the component. |
Event name | Brief description | |
Drag | The Drag event occurs on clicking and holding the mouse button. | |
DragEnd | The DragEnd event occurs when dragging the component finishes. | |
DragStart | The DragStart event occurs when dragging the component starts. | |
OnContextMenu | The OnContextMenu event occurs on calling context menu of the component. | |
SizeChanged | The SizeChanged event occurs after the component is resized. | |
SizeChanging | The SizeChanging event occurs during component resize. |
Property name | Brief description | |
The Id property determines a repository object identifier. |
Method name | Brief description | |
clone | The clone method creates an object copy. | |
dispose | The dispose method deletes the component. | |
getHashCode | The getHashCode method returns hash code of repository object. | |
getId | The getId method returns repository object identifier. | |
getSettings | The getSettings method returns repository object settings. | |
getTypeName | The getTypeName method returns the name of the object type without the namespace, to which it belongs. | |
isEqual | The isEqual method determines whether the specified object is equal to the current repository object. | |
isLive | The isLive method determines validity of repository object. | |
removeAllEvents | The removeAllEvents method removes all object event handlers by the specified context. | |
setId | The setId method determines a repository object identifier. | |
setSettings | The setSettings method determines repository object settings. | |
defineProps | The defineProps method creates get and set methods from name array for the specified class. | |
keys | The keys method returns array of methods and properties names for the specified object. |
See also: