Feature/Enhancement: Add RequiredText support for standard text labels

Radzen.Blazor Components
1

Hi, I would like to propose a useful enhancement for the RadzenLabel component. Currently, to display a required marker (like *), developers often have to override the entire ChildContent.

I suggest adding a RequiredText parameter that automatically appends a styled required indicator when using the standard Text property.

Proposed Changes
1. Component Parameter (RadzenLabel.razor.cs):

        /// <summary>
        /// Gets or sets the label required text to display.
        /// For simple text labels, use this property. For complex content, use <see cref="ChildContent"/> instead.
        /// </summary>
        /// <value>The label required text. Default is empty string.</value>
        [Parameter]
        public string RequiredText { get; set; } = "";

2. Component Markup (RadzenLabel.razor):

@if (Visible) 
{ 
        <label @ref="@Element" for="@Component" style="@Style" @attributes="Attributes" class="@GetCssClass()" id="@GetId()">@if(ChildContent != null){@ChildContent}else{@Text @if(!string.IsNullOrEmpty(RequiredText)){<span style="color: var(--rz-text-required-color);">@RequiredText</span>}}</label> 
}

3. Theme Styles (CSS):

--rz-text-required-color: var(--rz-danger);

Usage Example

<RadzenLabel Text="Email Address" RequiredText="*" Component="EmailInput" />

Why is this useful?

  • Better DX (Developer Experience): No need to write complex boilerplate or nested <span> tags inside ChildContent just to show a simple asterisk next to a text label.
  • Consistency: Allows centralized styling of the required field indicator via CSS variables.
2

Thanks for the suggestion @Vitaliy_Tkachenko however we prefer to keep it as is at the moment.