DxDropDownButtonBase.DropDownToggleCssClass Property

Assigns a CSS class to the drop-down toggle.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v25.1.dll

NuGet Package: DevExpress.Blazor

Declaration

[DefaultValue("")]
[Parameter]
public string DropDownToggleCssClass { get; set; }

Property Value

Type	Default	Description
String	String.Empty	CSS class names delimited by spaces.

Remarks

Assign a CSS class name to the DropDownToggleCssClass property to define the appearance of the drop-down toggle.

The following components implement the DropDownToggleCssClass property:

DxDropDownButton

A toggleable button that reveals a drop-down element with a list of commands or custom content.

DxSplitButton

A composite control that consists of a primary button and a toggleable secondary button that reveals a drop-down element.

DxDropDownButtonItem

Defines a drop-down list item. Used in DxDropDownButton or DxSplitButton.

For more information on how to apply CSS classes to DevExpress Blazor components, refer to the following help topic: CSS Classes.

If your custom CSS ruleset includes only one class selector, some property declarations can be ignored. DevExpress themes can apply predefined CSS rules that are more specific and have higher priority than a single-selector rule. Make your rule more specific to increase the priority of your ruleset. See the following help topic for an example: Apply Styles to Components. For more information about how a browser calculates rule priority, refer to the following topic: Understanding the cascade.

You can use the !important flag to override other CSS rules. However, note that this flag modifies the standard behavior of the cascade, which can make troubleshooting CSS issues quite challenging, particularly in large stylesheets.

To limit the scope of CSS styles so that they only apply to a specific component and do not accidentally affect other parts of the application, use Blazor CSS isolation. This feature allows you to define CSS styles that apply only to HTML elements rendered by a specific Blazor component.

Example

The following code snippet changes the position of the main drop-down element in the DxDropDownButton component and customizes the drop-down toggle icon:

Razor

<DxDropDownButton Text="Blazor Components"
                  RenderStyleMode="ButtonRenderStyleMode.Outline"
                  DropDownToggleCssClass="toggle-icon"
                  DropDownPosition="DropDownPosition.Right">
    <Items>
        <DxDropDownButtonItem Text="Documentation"
                              NavigateUrl="https://docs.devexpress.com/Blazor/400725/blazor-components" />
        <DxDropDownButtonItem Text="Demos"
                              NavigateUrl="https://demos.devexpress.com/blazor/" />
    </Items>
</DxDropDownButton>

CSS

.toggle-icon {
    width: 1rem;
    height: 1rem;
    background-size: contain;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    background-position: center center;
    background-color: currentColor;
    opacity: 0.7;
    -webkit-mask-image: url(../images/arrow.svg);
    mask-image: url(../images/arrow.svg);
}