acceptCustomValue
Specifies whether the widget allows a user to enter a custom value. Requires the onCustomItemCreating handler implementation.
accessKey
The value of this option will be passed to the accesskey
attribute of the HTML element that underlies the widget.
dataSource
This option accepts one of the following:
Array
A JavaScript array that contains string, numeric, Boolean values, or plain objects.URL
The URL of a JSON file or service that returns JSON data.DataSource or its configuration object
The DataSource is an object that provides an API for data processing. The DataSource's underlying data access logic is isolated in a store. Refer to the Data Layer and DataSource Examples guides for more information about the DataSource.
If the data source contains objects, specify the key in the store and/or a data field providing values in the widget.
.
, ,
, :
, [
, and ]
. Their presence may cause issues in the widget's operation.If the data source is specified using the dataSource option, use the items option only for reading. Updating data items using the items option may cause unexpected results.
See Also
- key in ArrayStore | CustomStore | LocalStore | ODataStore
deferRendering
Specifies whether to render the drop-down field's content when it is displayed. If false, the content is rendered immediately.
elementAttr
Specifies the attributes to be attached to the widget's root element.
jQuery
$(function(){ $("#selectBoxContainer").dxSelectBox({ // ... elementAttr: { id: "elementId", class: "class-name" } }); });
Angular
<dx-select-box ... [elementAttr]="{ id: 'elementId', class: 'class-name' }"> </dx-select-box>
import { DxSelectBoxModule } from "devextreme-angular"; // ... export class AppComponent { // ... } @NgModule({ imports: [ // ... DxSelectBoxModule ], // ... })
ASP.NET MVC Control
@(Html.DevExtreme().SelectBox() .ElementAttr("class", "class-name") // ===== or ===== .ElementAttr(new { @id = "elementId", @class = "class-name" }) // ===== or ===== .ElementAttr(new Dictionary<string, object>() { { "id", "elementId" }, { "class", "class-name" } }) )
@(Html.DevExtreme().SelectBox() _ .ElementAttr("class", "class-name") ' ===== or ===== .ElementAttr(New With { .id = "elementId", .class = "class-name" }) ' ===== or ===== .ElementAttr(New Dictionary(Of String, Object) From { { "id", "elementId" }, { "class", "class-name" } }) )
grouped
When this option is true, make sure that all data source objects have the following structure:
var dataSource = [{ key: "Group 1", // Group caption items: [ // Items in the group { ... }, { ... } ] }, { // ... }];
You can supply data to this structure using the DataSource object's group option.
See Also
height
This option accepts a value of one of the following types:
Number
The height in pixels.String
A CSS-accepted measurement of height. For example,"55px"
,"80%"
,"auto"
,"inherit"
.Function
A function returning either of the above. For example:JavaScriptheight: function() { return window.innerHeight / 1.5; }
inputAttr
jQuery
$(function(){ $("#selectBoxContainer").dxSelectBox({ // ... inputAttr: { id: "inputId" } }); });
Angular
<dx-select-box ... [inputAttr]="{ id: 'inputId' }"> </dx-select-box>
import { DxSelectBoxModule } from "devextreme-angular"; // ... export class AppComponent { // ... } @NgModule({ imports: [ // ... DxSelectBoxModule ], // ... })
ASP.NET MVC Control
@(Html.DevExtreme().SelectBox() .InputAttr("id", "inputId") // ===== or ===== .InputAttr(new { @id = "inputId" }) // ===== or ===== .InputAttr(new Dictionary<string, object>() { { "id", "inputId" } }) )
@(Html.DevExtreme().SelectBox() _ .InputAttr("id", "inputId") ' ===== or ===== .InputAttr(New With { .id = "inputId" }) ' ===== or ===== .InputAttr(New Dictionary(Of String, Object) From { { "id", "inputId" } }) )
isValid
In Knockout apps, you may need to inform a user about an error that occurred during the validation of a view model field. For this purpose, set the editor's isValid option to the isValid value of the dxValidator that validates this field. To show an error message, set the editor's validationError option to the dxValidator's validationError value.
var editorValue = ko.observable("").extend({ dxValidator: { validationRules: [{ type: "required", message: "Specify this value" }] } }); var viewModel = { editorOptions: { value: editorValue, isValid: editorValue.dxValidator.isValid, validationError: editorValue.dxValidator.validationError } };
The editor's isValid and validationError options should also be specified when using a custom validation engine. In this instance, the validation result will be displayed for the editor by the means of the DevExtreme Validation UI.
See Also
items
Array<any>
You can use the dataSource option instead. Unlike the items option, the dataSource option can take on the DataSource configuration object as well as a simple array.
minSearchLength
The minimum number of characters that must be entered into the text box to begin a search. Applies only if searchEnabled is true.
name
Specify this option if the widget lies within an HTML form that will be submitted.
If you configure the widget as an ASP.NET MVC Control, use this option to bind the widget to a model property. If this model property contains Data Annotation validation attributes, you get the client-side validation enabled by default.
onChange
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only if Knockout is used. |
|
jQueryEvent |
Use 'event' instead. The jQuery event that caused the handler execution. Deprecated in favor of the event field. |
|
event | Event (jQuery or EventObject) |
The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery. |
onClosed
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only if Knockout is used. |
onContentReady
A function that is executed when the widget's content is ready and each time the content is changed.
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only when using Knockout. |
If data displayed by the widget is specified using a DataSource instance, the contentReady event fires each time the load() method of the DataSource instance is called as well as when widget content is ready. In this case, when you create the widget, the contentReady event is raised twice: when the widget's content is ready (at this moment, the widget does not display items) and when the DataSource is loaded (the widget displays the loaded items).
onCopy
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only if Knockout is used. |
|
jQueryEvent |
Use 'event' instead. The jQuery event that caused the handler execution. Deprecated in favor of the event field. |
|
event | Event (jQuery or EventObject) |
The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery. |
onCustomItemCreating
A function that is executed when a user adds a custom item. Requires acceptCustomValue to be set to true.
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only if you use Knockout. |
|
text |
The input field's text. |
|
customItem | | | |
The field where to place a custom item. |
onCut
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only if Knockout is used. |
|
jQueryEvent |
Use 'event' instead. The jQuery event that caused the handler execution. Deprecated in favor of the event field. |
|
event | Event (jQuery or EventObject) |
The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery. |
onDisposing
A function that is executed before the widget is disposed of.
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only if you use Knockout. |
onEnterKey
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only if Knockout is used. |
|
jQueryEvent |
Use 'event' instead. The jQuery event that caused the handler execution. Deprecated in favor of the event field. |
|
event | Event (jQuery or EventObject) |
The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery. |
onFocusIn
Name | Type | Description |
---|---|---|
jQueryEvent |
Use 'event' instead. The jQuery event that caused the handler execution. Deprecated in favor of the event field. |
|
model |
The model data. Available only if Knockout is used. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
component |
The widget's instance. |
|
event | Event (jQuery or EventObject) |
The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery. |
onFocusOut
Name | Type | Description |
---|---|---|
jQueryEvent |
Use 'event' instead. The jQuery event that caused the handler execution. Deprecated in favor of the event field. |
|
model |
The model data. Available only if Knockout is used. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
component |
The widget's instance. |
|
event | Event (jQuery or EventObject) |
The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery. |
onInitialized
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
You cannot access widget elements in this function because it is executed before they are ready. Use the onContentReady function instead.
onInput
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only if Knockout is used. |
|
jQueryEvent |
Use 'event' instead. The jQuery event that caused the handler execution. Deprecated in favor of the event field. |
|
event | Event (jQuery or EventObject) |
The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery. |
onItemClick
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only if Knockout is used. |
|
itemData |
The clicked item's data. |
|
itemElement |
The item's container. |
|
itemIndex | | |
The clicked item's index. If the widget items are grouped, the index represents an object defining the group and item indexes: { group: 0, item: 0 }. |
event | Event (jQuery or EventObject) |
The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery. |
onKeyDown
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only if Knockout is used. |
|
jQueryEvent |
Use 'event' instead. The jQuery event that caused the handler execution. Deprecated in favor of the event field. |
|
event | Event (jQuery or EventObject) |
The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery. |
onKeyPress
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only if Knockout is used. |
|
jQueryEvent |
Use 'event' instead. The jQuery event that caused the handler execution. Deprecated in favor of the event field. |
|
event | Event (jQuery or EventObject) |
The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery. |
onKeyUp
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only if Knockout is used. |
|
jQueryEvent |
Use 'event' instead. The jQuery event that caused the handler execution. Deprecated in favor of the event field. |
|
event | Event (jQuery or EventObject) |
The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery. |
onOpened
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only if Knockout is used. |
onOptionChanged
Name | Type | Description |
---|---|---|
name |
The option's short name. |
|
model |
The model data. Available only if you use Knockout. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
component |
The widget's instance. |
|
fullName |
The option's full name. |
|
value | any |
The option's new value. |
onPaste
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only if Knockout is used. |
|
jQueryEvent |
Use 'event' instead. The jQuery event that caused the handler execution. Deprecated in favor of the event field. |
|
event | Event (jQuery or EventObject) |
The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery. |
onSelectionChanged
Name | Type | Description |
---|---|---|
component |
The widget's instance. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
model |
The model data. Available only if Knockout is used. |
|
selectedItem |
The selected item's data. |
onValueChanged
A function that is executed after the widget's value is changed.
Name | Type | Description |
---|---|---|
event | Event (jQuery or EventObject) |
The event that caused the handler execution. It is a dxEvent or a jQuery.Event when you use jQuery. |
jQueryEvent |
Use 'event' instead. The jQuery event that caused the handler execution. Deprecated in favor of the event field. |
|
previousValue |
The widget's previous value. |
|
value |
The widget's new value. |
|
model |
The model data. Available only if Knockout is used. |
|
element |
The widget's container. It is an HTML Element or a jQuery Element when you use jQuery. |
|
component |
The widget's instance. |
rtlEnabled
When this option is set to true, the widget text flows from right to left, and the layout of elements is reversed. To switch the entire application/site to the right-to-left representation, assign true to the rtlEnabled field of the object passed to the DevExpress.config(config) method.
DevExpress.config({ rtlEnabled: true });
See Also
- Right-to-Left Support Demo: DataGrid | Navigation Widgets | Editors
searchEnabled
See Also
searchExpr
Specifies the name of a data source item field or an expression whose value is compared to the search criterion.
In most cases, you should pass the name of a field by whose value data items are searched. If you need to search elements by several field values, assign an array of field names to this option.
searchExpr: ["firstName", "lastName"]
For more information on searching, refer to the Search API section of the Data Layer article. For information on getters, refer to the Getters and Setters section of the Data Layer article.
searchMode
Use the DropDownSearchMode
enum to specify this option when the widget is used as an ASP.NET MVC Control. This enum accepts the following values: Contains
and StartsWith
.
searchTimeout
Specifies the time delay, in milliseconds, after the last character has been typed in, before a search is executed.
showDataBeforeSearch
Specifies whether or not the widget displays unfiltered values until a user types a number of characters exceeding the minSearchLength option value.
tabIndex
The value of this option will be passed to the tabindex
attribute of the HTML element that underlies the widget.
validationError
Specifies information on the validation error when using a custom validation engine. Should be changed at runtime along with the isValid option.
validationMessageMode
Specifies how the message about the validation rules that are not satisfied by this editor's value is displayed.
The following option values are possible:
- auto
The tooltip with the message is displayed when the editor is in focus. - always
The tooltip with the message is not hidden when the editor loses focus.
Use the ValidationMessageMode
enum to specify this option when the widget is used as an ASP.NET MVC Control. This enum accepts the following values: Auto
and Always
.
value
Specifies the currently selected value. May be an object if dataSource contains objects and valueExpr is not set.
valueChangeEvent
Specifies the DOM events after which the widget's value should be updated. Applies only if acceptCustomValue is set to true.
valueExpr
Specifies which data field provides the widget's value. When this option is not set, the value is the entire data object.
width
This option accepts a value of one of the following types:
Number
The width in pixels.String
A CSS-accepted measurement of width. For example,"55px"
,"80%"
,"auto"
,"inherit"
.Function
A function returning either of the above. For example:JavaScriptwidth: function() { return window.innerWidth / 1.5; }
If you have technical questions, please create a support ticket in the DevExpress Support Center.