子页面AreaSelect.cshtml页面的Controller代码：
public ActionResult AreaSelect()
{
return PartialView();
}
父页面前台代码：
<td>
@{
ViewDataDictionary data = new ViewDataDictionary();
data.Add("areaId", "2");
Html.RenderPartial(Url.Content("~/Views/Backstage/Area/AreaSelect.cshtml"), null, data);
}
</td>
子页面前台获取父页面传入的参数：
@{
string areaId = ViewBag.areaId;
}
