How to display the list of all categories in Search.cshtml?

@if (Model.Categories.Count > 0)
        {
            <div class="entity">
                <div class="entity-title">
                    <h2>@T("Sitemap.Categories")</h2>
                </div>
                <div class="entity-body">
                    <ul>
                        @foreach (var category in Model.Categories)
                        { 
                            <li><a href="@Url.RouteUrl("Category", new { SeName = category.SeName })">@category.Name</a></li>
                        }
                    </ul>
                </div>
            </div>
        }