Html.BeginForm与Ajax.BeginForm都是ＭＶＣ架构中的表单元素，它们从字面上可以看到区别，即Html.BeginForm是普通的表单提交，而Ajax.BeginForm是支持异步的表单提交，这对于我们开发者来说是一个福音，我们不用再自己去用ＪＱ代码了，直接用ＭＶＣ自代的Ajax.BeginForm就可以很容易的完成一个异步的表单提交动作。
Html.BeginForm的原型解释：
1 @using (Html.BeginForm()) {} //提交到当前页面
2
3 @using (Html.BeginForm(new {} )) {} //提交到当前页面,并可以传递参数
4
5 @using (Html.BeginForm("action","controller")) {} //提交到指定controller下的action中
6
7 @using (Html.BeginForm("action","controller",FormMethod.POST)) {} //提交到指定controller下的action中，并指定提交方式
8
9 FormMethod枚举如下：
10
11 // 摘要:
12 // 枚举窗体的 HTTP 请求类型。
13 public enum FormMethod
14 {
15 // 摘要:
16 // 指定 GET 请求。
17 Get = 0,
18 //
19 // 摘要:
20 // 指定 POST 请求。
21 Post = 1,
22 }
Ajax.BeginForm异步表单原型解释
1 @using (Ajax.BeginForm(
2 new AjaxOptions
3 {
4 UpdateTargetId = "UserLogOnContainer",
5 HttpMethod = "Post",
6 OnSuccess = " ",
7 })){} //提交到当前页面，提交方式为Post,异步更新模块ＩＤ为UserLogOnContainer
8
9 @using (Ajax.BeginForm("action", "controller", null,
10 new AjaxOptions
11 {
12 UpdateTargetId = "UserLogOnContainer",
13 HttpMethod = "Post",
14 OnSuccess = " ",
15 }))
16 {} //提交到指定controller下的action，提交方式为Post,异步更新模块ＩＤ为UserLogOnContainer
下面看一下Ajax.BeginForm的例子，一个用户登陆的ＤＥＭＯ
View代码：
1 @model TsingDa.Ask.Models.UserLogOnModel
2 @{Layout = "";}
3 <script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
4 <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
5 <script src="@Url.Content("~/Scripts/jquery.unobtrusive-ajax.min.js")" type="text/javascript"></script>
6 <div id="UserLogOnContainer">
7 @using (Ajax.BeginForm("UserLogOn", "Home", null,
8 new AjaxOptions
9 {
10 UpdateTargetId = "UserLogOnContainer",
11 HttpMethod = "Post",
12 OnSuccess = " ",
13 }))
14 {
15 @Html.ValidationSummary(true)
16 <div class="editor-field">
17 @Html.TextBoxFor(m => m.Email)
18 @Html.ValidationMessageFor(m => m.Email)
19 </div>
20 <div class="editor-field">
21 @Html.TextBoxFor(m => m.Password)
22 @Html.ValidationMessageFor(m => m.Password)
23 </div>
24 <input type="submit" id="logOnBtn" value="登陆" />
25 }
26 </div>
Controller层代码如下：
1 /// <summary>
2 /// 用户登陆
3 /// </summary>
4 /// <returns></returns>
5 public ActionResult UserLogOn()
6 {
7 return View(new UserLogOnModel("邮箱", "密码"));
8 }
9 [HttpPost]
10 public ActionResult UserLogOn(UserLogOnModel entity)
11 {
12 if (ModelState.IsValid)
13 {
14 VM = user_InfoManager.UserLogOn(new User_Info { Email = entity.Email, Password = entity.Password });
15 if (VM.IsComplete)
16 {
17 return RedirectToAction("Index", "Home");
18 }
19 else
20 {
21 VM.ToList().ForEach(i => ModelState.AddModelError("", i));
22 }
23 }
24
25 return View();
26 }
表单提交后，页面效果如下：
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需要注意的是，表单中的按钮在异步表单中也是Submit类型，如果是异步表单，引入的ＪＳ文件需要有jquery.unobtrusive-ajax.min.js，在这项目的scripts目录已经存在。
Reference from : http://www.cnblogs.com/lori/archive/2012/06/27/2565470.html