Theme.razor

@inject NavigationManager NavigationManager
@inject ThemeService ThemeService

<link href="@Href" rel="stylesheet" />
@if (ThemeService.WCAG)
{
    <link href="@WcagHref" rel="stylesheet" />
}

@code {
    bool IsPremiumTheme => ThemeService.CurrentTheme == "fluent" || ThemeService.CurrentTheme == "fluent-dark" || ThemeService.CurrentTheme == "material-dark" || ThemeService.CurrentTheme == "material3" || ThemeService.CurrentTheme == "material3-dark";

    string Href => IsPremiumTheme ? $"/css/{ThemeService.CurrentTheme}-base.css" : $"_content/Radzen.Blazor/css/{ThemeService.CurrentTheme}-base.css";
    string WcagHref => IsPremiumTheme ? $"/css/{ThemeService.CurrentTheme}-wcag.css" : $"_content/Radzen.Blazor/css/{ThemeService.CurrentTheme}-wcag.css";

    protected override void OnInitialized()
    {
#if !RADZEN
        ThemeService.Initialize(NavigationManager);
#endif
    }
}