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SimpleItem

This article describes configuration options of a simple form item.

Type:

Object

A simple form item is an editor-label pair usually bound to a formData object field used to display and modify this field.

You can also create a simple item without binding it to a formData field. For example, it can be a check box that allows a user to confirm his agreement to process entered data.

For detailed information on configuring simple items, see the Configure Simple Items topic.

View Demo

colSpan

Specifies the number of columns spanned by the item.

Type:

Number

Default Value: undefined

See Also

component

An alias for the template option specified in React. Accepts a custom component. Refer to Using a Custom Component for more information.

cssClass

Specifies a CSS class to be applied to the form item.

Type:

String

Default Value: undefined

In Form, you can customize the appearance of form items using CSS styles. To apply a style to an item, implement a CSS class, which may contain various properties, and assign the name of this class to the cssClass option of the item.

dataField

Specifies the path to the formData object field bound to the current form item.

Type:

String

Default Value: undefined

editorOptions

Configures the form item's editor.

Type:

Object

Default Value: undefined

This object should contain the options of the DevExtreme editor specified in the editorType.

When using ASP.NET MVC 5 Controls or DevExtreme-Based ASP.NET Core Controls, configure the editor as follows:

Razor C#
Razor VB
@(Html.DevExtreme().Form()
    .FormData(Model.Data)
    .Items(items => {
        items.AddSimple().DataField("EmployeeID")
            // Instead of TextBox here can be any other supported editor
            .Editor(e => e.TextBox()
                .Placeholder("Type a text here...")
                // ...
                // other editor options go here
            )
    })
)
@(Html.DevExtreme().Form() _
    .FormData(Model.Data) _
    .Items(Sub(items)
        items.AddSimple().DataField("EmployeeID") _
            .Editor(Function(e)
                ' Instead of TextBox here can be any other supported editor
                Return e.TextBox() _
                    .Placeholder("Type a text here...") _
                    ' ...
                    ' other editor options go here
            End Function)
    End Sub)
)

View Demo

NOTE
The fields of a configuration object passed to this option do not support two-way binding in Angular, AngularJS, and Knockout and event bindings in Angular.
See Also

editorType

Specifies which editor widget is used to display and edit the form item value.

Type:

String

Accepted Values: 'dxAutocomplete' | 'dxCalendar' | 'dxCheckBox' | 'dxColorBox' | 'dxDateBox' | 'dxDropDownBox' | 'dxHtmlEditor' | 'dxLookup' | 'dxNumberBox' | 'dxRadioGroup' | 'dxRangeSlider' | 'dxSelectBox' | 'dxSlider' | 'dxSwitch' | 'dxTagBox' | 'dxTextArea' | 'dxTextBox'

IMPORTANT
If you use DevExtreme modules, import the editor's module when specifying this option. You can omit modules for "dxTextBox", "dxDateBox", "dxCheckBox", and "dxNumberBox" because the Form widget imports them automatically when creating form items.
NOTE
At this time, the "dxHtmlEditor" widget is available as a community technology preview (CTP) version. We do not recommend that you use it in production environments because of possible implementation issues and a high chance of breaking changes in subsequent versions.

When using an ASP.NET MVC 5 Controls or DevExtreme-Based ASP.NET Core Controls, configure the editor as follows:

Razor C#
Razor VB
@(Html.DevExtreme().Form()
    .FormData(Model.Data)
    .Items(items => {
        items.AddSimple().DataField("EmployeeID")
            // Instead of CheckBox here can be any other supported editor
            .Editor(e => e.CheckBox()
                .Value(true)
                // ...
                // other editor options go here
            )
    })
)
@(Html.DevExtreme().Form() _
    .FormData(Model.Data) _
    .Items(Sub(items)
        items.AddSimple().DataField("EmployeeID") _
            .Editor(Function(e)
                ' Instead of CheckBox here can be any other supported editor
                Return e.CheckBox() _
                    .Value(True) _
                    ' ...
                    ' other editor options go here
            End Function)
    End Sub)
)

View Demo

See Also

helpText

Specifies the help text displayed for the current form item.

Type:

String

Default Value: undefined

See Also

isRequired

Specifies whether the current form item is required.

Type:

Boolean

Default Value: undefined

NOTE

If you specify validation rules using the validationRules option, the isRequired option is ignored. In this case, use the Require validation rule instead.

jQuery
JavaScript
$(function() {
    $("#formContainer").dxForm({
        // ...
        items: [{
            // ...
            validationRules: [
                { type: "required" }
            ]
        },
        // ...
        ]
    });
});
Angular
HTML
TypeScript
<dx-form ... >
    <dxi-item ... >
        <dxi-validation-rule type="required"></dxi-validation-rule>
    </dxi-item>
</dx-form>
import { DxFormModule } from "devextreme-angular";
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxFormModule
    ],
    // ...
})
See Also

itemType

Specifies the item's type. Set it to "simple" to create a simple item.

Type:

String

Default Value: 'simple'
Accepted Values: 'empty' | 'group' | 'simple' | 'tabbed' | 'button'

See Also

label

Specifies options for the form item label.

Type:

Object

Default Value: undefined

See Also

name

Specifies a name that identifies the form item.

Type:

String

Default Value: undefined

Use the name instead of the data field to access unbound simple items in methods like getEditor(dataField), itemOption(id), etc.

render

An alias for the template option specified in React. Accepts a rendering function. Refer to Using a Rendering Function for more information.

template

A template to be used for rendering the form item.

Type:

template

Template Data:
Name Type Description
component

Form

The Form instance.
dataField

String

The item's dataField.
editorOptions

Object

The item editor's configuration.
editorType

String

The editor's type.
name

String

The item's name.

View Demo

See Also

validationRules

An array of validation rules to be checked for the form item editor.

Type:

Array<RequiredRule | NumericRule | RangeRule | StringLengthRule | CustomRule | CompareRule | PatternRule | EmailRule>

Default Value: undefined

There are several predefined rule types. Each rule type demands a specific set of rule options. Refer to the Validation Rules section of the Validator API reference to learn how to define rules of different types.

View Demo

See Also

visible

Specifies whether or not the current form item is visible.

Type:

Boolean

Default Value: true

visibleIndex

Specifies the sequence number of the item in a form, group or tab.

Type:

Number

Default Value: undefined

Items whose visible indexes are not specified are located at the end of the sequence and are ordered alphabetically.