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V25.1
  • DxTreeList.CssClass Property

    Assigns a CSS class to the TreeList.

    Namespace: DevExpress.Blazor

    Assembly: DevExpress.Blazor.v25.1.dll

    NuGet Package: DevExpress.Blazor

    Declaration

    [DefaultValue(null)]
    [Parameter]
    public string CssClass { get; set; }

    Property Value

    Type Default Description
    String null

    CSS class names delimited by spaces.

    Remarks

    The CssClass property allows you to customize the TreeList’s appearance. The assigned CSS class is added to the TreeList’s root element.

    The TreeList consists of Bootstrap elements (card, table, and so on) and standard HTML elements (div, input, and so on). You can use the CssClass property to apply CSS classes to any of these elements. Refer to the following articles for more information:

    The following code snippet applies a CSS class to the TreeList’s root element:

    @inject EmployeeTaskService EmployeeTaskService
    
    <style>
        .my-style {
            font-style: italic;
            color: darkgray;
        }
    </style>
    
    <DxTreeList Data="TreeListData" KeyFieldName="Id" ParentKeyFieldName="ParentId" CssClass="my-style">
        <Columns>
            <DxTreeListDataColumn FieldName="Name" Caption="Task" />
            <DxTreeListDataColumn FieldName="EmployeeName" />
            <DxTreeListDataColumn FieldName="StartDate" />
            <DxTreeListDataColumn FieldName="DueDate" />
        </Columns>
    </DxTreeList>
    
    @code {
        List<EmployeeTask> TreeListData { get; set; }
    
        protected override void OnInitialized() {
            TreeListData = EmployeeTaskService.GenerateData();
        }
    }
    

    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 (.my-style in the code sample above), 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.

    Implements

    See Also