ASP.NET MVC 4使用技巧8：自定义CheckBox及ActionResult的Subtypes

今天简单介绍一下如何编写一个自定义的CheckBox：

<script type="text/javascript">
    function unhide(id_name, check_box) {
        var check = (check_box.checked) ? "block" : "none";
        document.getElementById(id_name).style.display = check;
    }
</script>



@Html.CheckBoxFor(model => model.NotifyEmail, new { @checked = "unchecked" , @onclick="unhide('hidden-input-email', this)"})Email Notification<br>
<div id="hidden-input-email" style="display:none">
<p>
   @Html.LabelFor(model => model.Email) 
   @Html.TextBoxFor(model => model.Email, new { @readonly="readonly" })
</p>
<div class="editor-field">
   @Html.TextAreaFor(model => model.EmailInfos, new { style = "width: 200px; height: 100px;" })
</div>

       
上面的View代码，使用了自定义的CheckBox
简单的说明一下：

1. @Html.CheckBoxFor(model => model.NotifyEmail, new { @checked = "unchecked" , @onclick="unhide('hidden-input-email', this)"})Email Notification<br>
2. 当我们点击这个CheckBox的时候会将隐藏的输入框显示出来，这里使用了一个简单的Javascript，当@onclick的事件被触发时。
3. 同时这里使用@checked = "unchecked"设置初始为unchecked。
4. 参数：model => model.NotifyEmail是我们对于checkbox的view model binding。
5. 我们的TextAreaFor也通过参数：new { style = "width: 200px; height: 100px;" }自定义了大小。

 

ActionResult有很多种Subtypes，我今天才知道，以前只用过3种。
出处：http://forums.asp.net/t/1448398.aspx

       
ViewResult - Renders a specifed view to the response stream

PartialViewResult - Renders a specifed partial view to the response stream

EmptyResult - An empty response is returned

RedirectResult - Performs an HTTP redirection to a specifed URL

RedirectToRouteResult - Performs an HTTP redirection to a URL that is determined by the routing engine, based on given route data

JsonResult - Serializes a given ViewData object to JSON format

JavaScriptResult - Returns a piece of JavaScript code that can be executed on the client

ContentResult - Writes content to the response stream without requiring a view

FileContentResult - Returns a file to the client

FileStreamResult - Returns a file to the client, which is provided by a Stream

FilePathResult - Returns a file to the client