ASP.NET Core Search Partial View

_Search.cshtml

<div class="d-flex flex-column col-sm-4">
    <form asp-action="Index" method="get">
        <div class="form-actions no-color">
            <p>
                Search: <input type="text" name="SearchString" value="@ViewData["CurrentFilter"]" class="form-control" style="margin:2%"/>
                <input type="submit" value="Search" role="button" /> |
                <a asp-action="Index" class="secondary" role="button">Back to Full List</a>
            </p>
        </div>
    </form>
</div>