@{
    var defaultMetadata = ViewData.ModelMetadata as Microsoft.AspNetCore.Mvc.ModelBinding.Metadata.DefaultModelMetadata;
    var attribute = defaultMetadata.Attributes.Attributes.OfType<MustBeTrueAttribute>().FirstOrDefault() as MustBeTrueAttribute;
    var list = ViewData.ModelMetadata.AdditionalValues;
    int i = 0;
}
<div class="checkboxfix">
    @Html.CheckBox("")
    <span>
        @Html.DisplayName("")
    </span>
    @foreach (var item in ViewData.ModelMetadata.AdditionalValues)
    {
        <span>@(i == 0 ? "" : ",")</span>
        <a class="agreement" target="_blank" href="@Url.Content2(item.Value.ToString())">@item.Key</a>
        i += 1;
    }
</div>