blocks|key|422754|text|以下是在Controller上调用实例方法的方式：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|422755|@{
++((HomeController)this.ViewContext.Controller).Method1();
}|code-block|syntax|javascript|422756|这就是在任何类中调用静态方法的方式。|422757|@{
++++SomeClass.Method();
}|422758|假设该方法是公共的，并且对视图可见，这将起作用。|422759|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

This is how you call an instance method on the Controller:

<pre><code>@{
 ((HomeController)this.ViewContext.Controller).Method1();
}
</code></pre>

This is how you call a static method in any class 

<pre><code>@{
 SomeClass.Method();
}
</code></pre>

This will work assuming the method is public and visible to the view.

blocks|key|1742435|text|您可以实现静态格式化方法或HTML助手，然后使用以下语法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1742436|@using+class_of_method_namespace
...
//+HTML+page+here
@className.MethodName()|code-block|syntax|javascript|1742437|或者在HTML助手的情况下：|1742438|@Html.MethodName()|1742439|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

You can implement a static formatting method or an HTML helper, then use this syntax:
<pre><code>@using class_of_method_namespace
...
// HTML page here
@className.MethodName()
</code></pre>
or in case of a HTML Helper:
<pre><code>@Html.MethodName()
</code></pre>

blocks|key|2531955|text|除了使用控制器调用之外，您应该创建只更改字符串格式的自定义助手。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2531956|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

You should create custom helper for just changing string format except using controller call.

blocks|key|1742508|text|在Amine回答的基础上，创建一个助手，如：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1742509|public+static+class+HtmlHelperExtensions
{
++++public+static+MvcHtmlString+CurrencyFormat(this+HtmlHelper+helper,+string+value)
++++{
++++++++var+result+=+string.Format("{0:C2}",+value);
++++++++return+new+MvcHtmlString(result);
++++}
}|code-block|syntax|javascript|1742510|在您看来:使用@Html.CurrencyFormat(model.value)|offset|length|style|CODE|1742511|如果您正在进行像标准数字格式这样的简单格式化，那么在您的视图中简单地使用string.Format()，如上面的助手示例中所示：|1742512|@string.Format("{0:C2}",+model.value)|1742513|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/dwhawy9k.aspx|1|http://msdn.microsoft.com/en-us/library/system.string.format.aspx^0|0|0|7|X|0|8|6|0|10|F|1|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|12|8|@$I|13|J|14|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|15|8|@]|9|@$I|16|J|17|1|18]|$I|19|J|1A|1|1B]]|A|$]]|$1|O|3|P|5|D|7|1C|8|@]|9|@]|A|$E|F]]|$1|Q|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]|Y|$5|T|U|V|A|$W|Z]]]]

Building on Amine's answer, create a helper like:

<pre><code>public static class HtmlHelperExtensions
{
 public static MvcHtmlString CurrencyFormat(this HtmlHelper helper, string value)
 {
 var result = string.Format("{0:C2}", value);
 return new MvcHtmlString(result);
 }
}
</code></pre>

in your view: use <code>@Html.CurrencyFormat(model.value)</code>

If you are doing simple formating like <a href="http://msdn.microsoft.com/en-us/library/dwhawy9k.aspx" rel="noreferrer">Standard Numeric Formats</a>, then simple use <a href="http://msdn.microsoft.com/en-us/library/system.string.format.aspx" rel="noreferrer">string.Format()</a> in your view like in the helper example above:

<pre><code>@string.Format("{0:C2}", model.value)
</code></pre>

blocks|key|1742533|text|控制器不应该从视图中调用。这就是MVC的全部理念--明确的分离关注点。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1742534|如果你需要从视图中调用控制器--你做错了什么。是重构的时候了。|1742535|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Controller not supposed to be called from view. That's the whole idea of MVC - clear separation of concerns.

If you need to call controller from View - you are doing something wrong. Time for refactoring.

blocks|key|1742583|text|为什么你不使用Ajax|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1742584|它很简单，不需要page+refresh，并且有success+and+error回调。|1742585|看看我的沙姆普|1742586|<a+id="ResendVerificationCode"+>@Resource_en.ResendVerificationCode</a>|code-block|syntax|javascript|1742587|在JQuery中|1742588|+$("#ResendVerificationCode").on("click",+function()+{
++++++++++++++++getUserbyPhoneIfNotRegisterd($("#phone").val());
+});|1742589|这是我的ajax，它调用我的控制器和控制器，并从数据库返回对象。|1742590|function+getUserbyPhoneIfNotRegisterd(userphone)+{

++++++++++++++$.ajax({
++++++++++++++++++++type:+"GET",
++++++++++++++++++++dataType:+"Json",
++++++++++++++++++++url:+'@Url.Action("GetUserByPhone",+"User")'+%2B+'?phone='+%2B+userphone,
++++++++++++++++++++async:+false,
++++++++++++++++++++success:+function(data)+{
++++++++++++++++++++++++if+(data+==+null+%7C%7C+data.data+==+null)+{
++++++++++++++++++++++++++++ErrorMessage("",+"@Resource_en.YourPhoneDoesNotExistInOurDatabase");
++++++++++++++++++++++++}+else+{
++++++++++++++++++++++++++++user+=+data[Object.keys(data)[0]];
++++++++++++++++++++++++++++++++AddVereCode(user.ID);//+anather+Ajax+call+
++++++++++++++++++++++++++++++++SuccessMessage("Done",+"@Resource_en.VerificationCodeSentSuccessfully",+"Done");
++++++++++++++++++++++++}
++++++++++++++++++++},
++++++++++++++++++++error:+function()+{
++++++++++++++++++++++++ErrorMessage("",+'@Resource_en.ErrorOccourd');
++++++++++++++++++++}
++++++++++++++++});
++++++++++++}|1742591|entityMap^0|7|4|0|8|C|O|H|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|16|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|17|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|18|8|@]|D|@]|E|$]]|$1|Q|3|R|5|L|7|19|8|@]|D|@]|E|$M|N]]|$1|S|3|T|5|6|7|1A|8|@]|D|@]|E|$]]|$1|U|3|V|5|L|7|1B|8|@]|D|@]|E|$M|N]]|$1|W|3|-4|5|6|7|1C|8|@]|D|@]|E|$]]]|X|$]]

why You don't use <code>Ajax</code> to 

its simple and does not require <code>page refresh</code> and has <code>success and error</code> callbacks

take look at my samlpe

<pre><code>&lt;a id="ResendVerificationCode" &gt;@Resource_en.ResendVerificationCode&lt;/a&gt;
</code></pre>

and in JQuery

<pre><code> $("#ResendVerificationCode").on("click", function() {
 getUserbyPhoneIfNotRegisterd($("#phone").val());
 });
</code></pre>

and this is my ajax which call my controller and my controller and return object from database

<pre><code>function getUserbyPhoneIfNotRegisterd(userphone) {

 $.ajax({
 type: "GET",
 dataType: "Json",
 url: '@Url.Action("GetUserByPhone", "User")' + '?phone=' + userphone,
 async: false,
 success: function(data) {
 if (data == null || data.data == null) {
 ErrorMessage("", "@Resource_en.YourPhoneDoesNotExistInOurDatabase");
 } else {
 user = data[Object.keys(data)[0]];
 AddVereCode(user.ID);// anather Ajax call 
 SuccessMessage("Done", "@Resource_en.VerificationCodeSentSuccessfully", "Done");
 }
 },
 error: function() {
 ErrorMessage("", '@Resource_en.ErrorOccourd');
 }
 });
 }
</code></pre>

blocks|key|1742600|text|您不应该从视图中调用控制器。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1742601|将属性添加到视图模型中，在控制器中设置属性，并在视图中使用它。|1742602|下面是一个示例：|1742603|MyViewModel.cs：|1742604|public+class+MyViewModel
{+++...
++++public+bool+ShowAdmin+{+get;+set;+}
}|code-block|syntax|javascript|1742605|MyController.cs：|1742606|public+ViewResult+GetAdminMenu()
++++{
++++++++MyViewModelmodel+=+new+MyViewModel();++++++++++++

++++++++model.ShowAdmin+=+userHasPermission("Admin");+

++++++++return+View(model);
++++}|1742607|MyView.cshtml：|1742608|@model+MyProj.ViewModels.MyViewModel


@if+(@Model.ShowAdmin)
{
+++
}|1742609|..\Views\Shared\+_Layout.cshtml：|1742610|++++@using+MyProj.ViewModels.Common;
....
++++<div>++++
++++++++@Html.Action("GetAdminMenu",+"Layout")
++++</div>|1742611|entityMap^0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|12|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|13|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|14|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|15|8|@]|9|@]|A|$]]|$1|O|3|P|5|J|7|16|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|17|8|@]|9|@]|A|$]]|$1|S|3|T|5|J|7|18|8|@]|9|@]|A|$K|L]]|$1|U|3|V|5|6|7|19|8|@]|9|@]|A|$]]|$1|W|3|X|5|J|7|1A|8|@]|9|@]|A|$K|L]]|$1|Y|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|Z|$]]

You should not call a controller from the view. 

Add a property to your view model, set it in the controller, and use it in the view.

Here is an example:

MyViewModel.cs:

<pre><code>public class MyViewModel
{ ...
 public bool ShowAdmin { get; set; }
}
</code></pre>

MyController.cs:

<pre><code>public ViewResult GetAdminMenu()
 {
 MyViewModelmodel = new MyViewModel(); 

 model.ShowAdmin = userHasPermission("Admin"); 

 return View(model);
 }
</code></pre>

MyView.cshtml:

<pre><code>@model MyProj.ViewModels.MyViewModel


@if (@Model.ShowAdmin)
{
 &lt;!-- admin links here--&gt;
}
</code></pre>

..\Views\Shared\ _Layout.cshtml:

<pre><code> @using MyProj.ViewModels.Common;
....
 &lt;div&gt; 
 @Html.Action("GetAdminMenu", "Layout")
 &lt;/div&gt;
</code></pre>

In my MVC app the controller gets the data (model) from an external API (so there is no model class being used) and passes that to the view. The data (model) has a container in which there are several objects with several fields (string values). One view iterates over each object and calls another view to draw each of them. This view iterates over the fields (string values) and draws them.

Here's where it gets tricky for me. Sometimes I want to do some special formatting on the fields (string values). I could write 20 lines of code for the formatting but then I would have to do that for each and every field and that would just be silly and oh so ugly. Instead I would like to take the field (string value), pass it to a method and get another string value back. And then do that for every field.

So, here's my question:

How do I call a method from a view?

I realize that I may be asking the wrong question here. The answer is probably that I don't, and that I should use a local model and deserialize the object that I get from the external API to my local model and then, in my local model, do the "special formatting" before I pass it to the view. But I'm hoping there is some way I can call a method from a view instead. Mostly because it seems like a lot of overhead to convert the custom object I get from the API, which in turns contains a lot of other custom objects, into local custom objects that I build. And also, I'm not sure what the best way of doing that would be.

Disclaimer: I'm aware of the similar thread "ASP.NET MVC: calling a controller method from view" (<a href="https://stackoverflow.com/questions/2473025/asp-net-mvc-calling-a-controller-method-from-view">ASP.NET MVC: calling a controller method from view</a>) but I don't see how that answers my question.

ASP.Net MVC: Calling a method from a view

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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在我的MVC应用程序中，控制器从外部API获取数据(模型)(因此没有使用模型类)并将其传递给视图。数据(模型)有一个容器，其中有几个具有多个字段(字符串值)的对象。一个视图遍历每个对象，然后调用另一个视图来绘制每个对象。此视图遍历字段(字符串值)并绘制它们。这对我来说很棘手。有时，我想对字段(字符串值)进行一些特殊的格...

问ASP.Net MVC:从视图调用方法
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