@for (int i = 1; i <= ViewBag.maxPage; i++) {
                    if (ViewBag.pageIndex == i) {
                        <li class="page-item active"><a class="page-link" href="@Url.Action("ViewRequest", "Student",new { page=i})">@i</a></li>
                    }
                    else {
                    <li class="page-item"><a class="page-link" href="@Url.Action("ViewRequest", "Student",new { page=i})">@i</a></li>
                    }
                }