浅析Asp.net MVC 中Ajax的使用

  @using (Ajax.BeginForm(
    new AjaxOptions()
    {
      HttpMethod = "post",
      Url = @Url.Action("Index","Reviews"),
      InsertionMode = InsertionMode.Replace,
      UpdateTargetId = "restaurantList",
      LoadingElementId = "loding",
      LoadingElementDuration = 2000
    }))
  {
     <input type="search" name="searchItem"/>
     <input type="submit" value="按名称搜索"/>
  }

 <form id="form0" method="post" 
    data-ajax-url="/Reviews"
    data-ajax-update="#restaurantList"
    data-ajax-mode="replace"
    data-ajax-method="post"
    data-ajax-loading-duration="2000"
    data-ajax-loading="#loding"
    data-ajax="true"
    action="/Reviews" novalidate="novalidate">

 new AjaxOptions()
    {
　　　　　　 ...
      Url = @Url.Action("Index","Reviews")　　　
      ...
       }
    public ActionResult Index(string searchKey = null)
    {
      var model = _restaurantReviews.Where(r => searchKey == null || r.Name.ToLower().Contains(searchKey.ToLower().Trim()))
        .OrderByDescending(r => r.Rating)
        .Take(100)
        .Select(r=>new RestaurantReview()
        {
          City = r.City,
          Country = r.Country,
          Id = r.Id,
          Name = r.Name,
          Rating = r.Rating
        }).ToList();
      if (Request.IsAjaxRequest())
      {
        System.Threading.Thread.Sleep(1000  3);//模拟处理数据需要的时间
        //return View(model)会返回整个页面，所以返回部分视图。
        return PartialView("_RestaurantPatialView", model);
      }
      return View(model);
    }

<div id="restaurantList">...
</div>

  new AjaxOptions()
    {
      ....
      LoadingElementId = "loding",
      LoadingElementDuration = 2000
    }))

<div id="loding" hidden="hidden">
  <img class="smallLoadingImg" src="@Url.Content("~/Content/images/loading.gif")" />
</div>

 @@Html.ActionLink(item.Name, "Details", "Reviews",new{id = item.Id},new {@class ="isStar"})@
            @<a class="isStar" href="@Url.Action("Details","Reviews", new {id = item.Id})">@item.Name</a>@
            @使用Ajax的超链接@
            @{
              var ajaxOptions = new AjaxOptions()
              {
                HttpMethod = "post",
                //Url = @Url.Action(""),
                UpdateTargetId = "renderBody",
                InsertionMode = InsertionMode.Replace,
                LoadingElementId = "loding",
                LoadingElementDuration = 2000
              };
              @Ajax.ActionLink(item.Name, "Details", "Reviews", new { id = item.Id }, ajaxOptions, new {@class="isStar"}) 
            }

<a class="isStar" 
　　href="/Reviews/Details/1" 
　　data-ajax-update="#renderBody" 
　　data-ajax-mode="replace" 
　　data-ajax-method="post" 
　　data-ajax-loading-duration="2000" 
　　data-ajax-loading="#loding" 
　　data-ajax="true">

 /// <summary>
    ///关于使用System.Web.Mvc.Ajax的说明
    /// Controller的Action方法
    ///  （1）当显式添加[HttpPost]，传给System.Web.Mvc.Ajax的AjaxOptions()的HttpMethod只能为 "post",
    ///  （2）当显式添加[HttpGet]，传给System.Web.Mvc.Ajax的AjaxOptions()的HttpMethod只能为 "get",
    ///   (3) 当都没有显式添加[HttpPost]和[HttpGet]，传给System.Web.Mvc.Ajax的AjaxOptions()的HttpMethod可以为 "get"也可以为"post",
    /// </summary>
    /// <param name="id"></param>
    /// <returns></returns>
    public ActionResult Details(int id=1)
    {
      var model = (from r in _restaurantReviews
        where r.Id == id
        select r).FirstOrDefault();
      if (Request.IsAjaxRequest())
      {
        return PartialView("_RestaurantDetails", model);
      }
      return View(model);
    }

   <div id="renderBody">
             ....     
        </div>   

@ ---------------------------------------------------------
     需要手工为Form添加些属性标签，用于锚点
  模仿MVC框架的构建自己的“非介入式Javascript”模式
  -------------------------------------------------------@
<form method="post"
   action="@Url.Action("Index")"
   data-otf-ajax="true"
   data-otf-ajax-updatetarget="#restaurantList">
  <input type="search" name="searchItem" />
  <input type="submit" value="按名称搜索" />
</form>

<form data-otf-ajax-updatetarget="#restaurantList" 
     data-otf-ajax="true" 
     action="/Reviews" 
     method="post" 
     novalidate="novalidate">

$(function () {
  var ajaxFormSubmit = function() {
    var $form = $(this);
    var ajaxOption = {
      type: $form.attr("method"),
      url: $form.attr("action"),
      data: $form.serialize()
    };
    $.ajax(ajaxOption).done(function(data) {
      var updateTarget = $form.attr("data-otf-ajax-updatetarget");
      var $updateTarget = $(updateTarget);
      if ($updateTarget.length > 0) {
        var $returnHtml = $(data);
        $updateTarget.empty().append(data);
        $returnHtml.effect("highlight");
      }      
    });
    return false;
  };
  $("form[data-otf-ajax='true']").submit(ajaxFormSubmit);
});