btcpayserver/BTCPayServer/Views/Shared/_NavLayout.cshtml

@{
    Layout = "/Views/Shared/_Layout.cshtml";
    ViewBag.ShowMenu = ViewBag.ShowMenu ?? true;
    ViewBag.ShowMainTitle = ViewBag.ShowMainTitle ?? true;
    ViewBag.ShowBreadcrumb = ViewBag.ShowBreadcrumb ?? false;
    if (!ViewData.ContainsKey("NavPartialName"))
    {
        ViewData["NavPartialName"] = "_Nav";
    }
}

@section PageHeadContent {
    @await RenderSectionAsync("PageHeadContent", false)
}

@section PageFootContent {
    @await RenderSectionAsync("PageFootContent", false)
}

<section>
    <div class="container">
        @if (ViewBag.ShowBreadcrumb)
        {
            <nav aria-label="breadcrumb" class="mt-n3 mb-4">
                <ol class="breadcrumb px-0">
                    @if (!string.IsNullOrEmpty(ViewData["CategoryTitle"] as string))
                    {
                        <li class="breadcrumb-item" aria-current="page">@ViewData["CategoryTitle"]</li>
                    }
                    @if (!string.IsNullOrEmpty(ViewData["MainTitle"] as string))
                    {
                        <li class="breadcrumb-item" aria-current="page">@ViewData["MainTitle"]</li>
                    }
                    @if (!string.IsNullOrEmpty(ViewData["PageTitle"] as string))
                    {
                        <li class="breadcrumb-item" aria-current="page">@ViewData["PageTitle"]</li>
                    }
                </ol>
            </nav>
        }
        else if (!string.IsNullOrEmpty(ViewData["MainTitle"] as string))
        {
            <h2 class="mb-5">@ViewData["MainTitle"]</h2>
        }
        <div class="row">
            @if (ViewBag.ShowMenu)
            {
                <div class="col-md-3 ms-n3 ms-md-0">
                    <partial name="@ViewData["NavPartialName"].ToString()" />
                </div>
            }
            <div class="col-md-9">
                <partial name="_StatusMessage" />
                @RenderBody()
            </div>
        </div>
    </div>
</section>