将html datalist值传递给Html.Action

Question

我正在创建一个HTML表单，其中列出了一个组织中需要映射到另一个组织的订单项。我的想法是获取所选选项的ID，并通过Html.Action将其传递给操作。这是我到目前为止的代码;

<table class="table">
    <tr>
        <th>
            @Html.DisplayNameFor(model => model.newID)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.oldserviceid)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.description)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Avg)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Count)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.acquisitionid)
        </th>
        <th></th>
    </tr>
@foreach (var item in Model) {
    <tr>
        <td>
@* This is where I'm stuck *@
            <form action=@Html.Action("Update", new { linemappingID = @item.LineMapID, newID = /*what goes here?*/ }) method="post" onsubmit="return updateForm()" id="@item.LineMapID">
                <input list="serviceList" name="serviceList">
                <datalist id="serviceList">
                    @foreach (var serv in ViewBag.serviceList)
                    {
@* Pass the ID value from here to the Html.Action *@
                        <option value="@serv.serviceid - @serv.servicedesc" id="@serv.serviceid">@serv.serviceid - @serv.servicedesc</option>
                    }
                </datalist>
                <input type="submit" value="update" />
            </form>

        </td>
        <td>
            @Html.DisplayFor(modelItem => item.oldserviceid)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.description)
        </td>
        <td>
            $@Html.DisplayFor(modelItem => item.Avg)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Count)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.acquisitionid)
        </td>
    </tr>
}
</table>