<div class="modal fade" id="confirm-delete" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">

            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
                <h4 class="modal-title" id="myModalLabel">Confirm Delete</h4>
            </div>

            <div class="modal-body">
                <p>You are about to delete one track, this procedure is irreversible.</p>
                <p>Do you want to proceed?</p>
                <p class="return-url"></p>
                <p class="debug-url"></p>

            </div>

            <div class="modal-footer">
                <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
                <a class="btn btn-danger btn-ok">Delete</a>
            </div>
        </div>
    </div>
</div>

<table class="table">
    <tr>
        <th>@Html.DisplayNameFor(model => model.OrderItemProductNodeProductTitle)</th>
        <th>@Html.DisplayNameFor(model => model.OrderItemProductNodeTitle)</th>
        <th>@Html.DisplayNameFor(model => model.OrderItemProductNodeDescription)</th>
        <th>@Html.DisplayNameFor(model => model.OrderItemProductNodeNumber)</th>
        <th>@Html.DisplayNameFor(model => model.ToolOrderCode)</th>
        <th>@Html.DisplayNameFor(model => model.AmountRequired)</th>
        <th></th>
    </tr>

    @foreach (var item in Model)
    {
        <tr>
            <td>@Html.DisplayFor(modelItem => item.OrderItemProductNodeProductTitle)</td>
            <td>@Html.DisplayFor(modelItem => item.OrderItemProductNodeTitle)</td>
            <td>@Html.DisplayFor(modelItem => item.OrderItemProductNodeDescription)</td>
            <td>@Html.DisplayFor(modelItem => item.OrderItemProductNodeNumber)</td>
            <td>@Html.DisplayFor(modelItem => item.ToolOrderCode)</td>
            <td>@Html.DisplayFor(modelItem => item.AmountRequired)</td>
            <td>
                <a href="@Url.Action("EditOrderItem", new { orderId = item.Id })" class="btn btn-warning"><span class="glyphicon glyphicon-pencil" aria-hidden="true"></span></a>
                <a href="#" data-href="@Url.Action("DeleteOrderItem", new { itemId = item.Id })" class="btn btn-danger" data-toggle="modal" data-target="#confirm-delete"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span></a>
            </td>
        </tr>
    }
</table>

$('#confirm-delete').on('show.bs.modal', function (e) {
    var button = $(e.relatedTarget);
    var modal = $(this);
    var deleteUrl = button.data('href');
    var returnUrl = button.data("return-url");
    modal.find('.btn-ok').attr('href', deleteUrl);
    modal.find('.return-url').html('From URL: <strong>' + returnUrl + '</strong>');
    modal.find('.debug-url').html('Delete URL: <strong>' + deleteUrl + '</strong>');
})
$('.btn-ok').click(function (e) {
    e.preventDefault();
    var url = $(this).attr('href');
    $.ajax({
        url: url,
        type: "POST",
        success: function (result) {
            $('#tabItems').html(result);
        }
    });
    $('#confirm-delete').modal('hide');
})

//пробовал делать скрытие модального окна и в методе "success" результат тот же
$('#confirm-delete').modal('hide');

<div class="panel panel-default">
    <div class="panel-heading">
        <h3 class="panel-title">@ViewBag.Caption</h3>
    </div>
    <div class="panel-body">
        <dl class="dl-horizontal">
            <dt>@Html.DisplayNameFor(model => model.OrderId)</dt>
            <dd>@Html.DisplayFor(model => model.OrderId)</dd>
            <dt>@Html.DisplayNameFor(model => model.OrderUnitFullName)</dt>
            <dd>@Html.DisplayFor(model => model.OrderUnitFullName)</dd>
            <dt>@Html.DisplayNameFor(model => model.LastChange)</dt>
            <dd>@Html.DisplayFor(model => model.LastChange)</dd>
        </dl>

        <ul class="nav nav-tabs">
            <li class="active">
                @Ajax.ActionLink("Список позиций", "GetOrderItems", "Order", new { orderId = Model.OrderId },
                    new AjaxOptions { UpdateTargetId = "Result" }, new { @role = "presentation" })
            </li>
            <li>
                @Ajax.ActionLink("История изменений", "GetOrderHistory", "Order", new { orderId = Model.OrderId },
                    new AjaxOptions { UpdateTargetId = "Result" }, new { @role = "presentation" })
            </li>
            <li>
                @Ajax.ActionLink("Замены инструмента", "GetItemHistory", "Order", new { orderId = Model.OrderId },
                    new AjaxOptions { UpdateTargetId = "Result" }, new { @role = "presentation" })
            </li>
        </ul>
        <div id="Result">
            @Html.Partial("Items", Model.Item)
        </div>
    </div>
</div>

<div id="tabItems">
    @using (Ajax.BeginForm("AddOrderItem", "Order", null, new AjaxOptions { UpdateTargetId = "tabItems", HttpMethod = "Post" }, new { id = "AddItem" }))
    {
        @Html.AntiForgeryToken()
        <div class="nav">
            <div class="navbar-form navbar-left">
                @Html.ValidationSummary(true, "", new { @class = "text-danger" })
                @Html.HiddenFor(model => model.OrderId, new { id="OrderId" })

                <div class="form-group">
                    @Html.EditorFor(model => model.ProductId, new { htmlAttributes = new { id = "ProductId", @class = "form-control select2",
                        data_url = @Url.Action("GetProductList", "Order"), data_placeholder = "Select an product" } })
                    @Html.ValidationMessageFor(model => model.ProductId, "", new { @class = "text-danger" })
                </div>

                <div class="form-group">
                    @Html.EditorFor(model => model.ProductNodeId, new { htmlAttributes = new { id = "ProductNodeId", @class = "form-control select2",
                        data_url = @Url.Action("GetProductNodeList", "Order") } })
                    @Html.ValidationMessageFor(model => model.ProductNodeId, "", new { @class = "text-danger" })
                </div>

                <div class="form-group">
                    @Html.EditorFor(model => model.ToolId, new { htmlAttributes = new { id="ToolId", @class = "form-control select2",
                        data_url = @Url.Action("GetToolList", "Order") } })
                    @Html.ValidationMessageFor(model => model.ToolId, "", new { @class = "text-danger" })
                </div>

                <div class="form-group">
                    @Html.EditorFor(model => model.AmountRequired, new { htmlAttributes = new { id="AmountRequired", @class = "form-control" } })
                    @Html.ValidationMessageFor(model => model.AmountRequired, "", new { @class = "text-danger" })
                </div>

                <div class="form-group">
                    <a href="#" id="submit" class="btn btn-primary"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span></a>
                </div>
            </div>
        </div>
    }
    @Html.Partial("_ItemsList", Model.ListItems)
</div>