淺析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="按名稱搜索"/>
 }

 <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);//模擬處理數(shù)據(jù)需要的時間
 //return View(model)會返回整個頁面，所以返回部分視圖。
 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的超鏈接*@
 @{
 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>
 ///關(guān)于使用System.Web.Mvc.Ajax的說明：
 /// Controller的Action方法：
 /// （1）當(dāng)顯式添加[HttpPost]，傳給System.Web.Mvc.Ajax的AjaxOptions()的HttpMethod只能為 "post",
 /// （2）當(dāng)顯式添加[HttpGet]，傳給System.Web.Mvc.Ajax的AjaxOptions()的HttpMethod只能為 "get",
 /// (3) 當(dāng)都沒有顯式添加[HttpPost]和[HttpGet]，傳給System.Web.Mvc.Ajax的AjaxOptions()的HttpMethod可以為 "get"也可以為"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> 

@* ---------------------------------------------------------
 需要手工為Form添加些屬性標(biāo)簽，用于錨點
 模仿MVC框架的構(gòu)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="按名稱搜索" />
</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);
});