如何使用它之前，控制器编辑Html.TextBoxFor的价值？ [英] How can edit the value of Html.TextBoxFor in controller before use it?

问题描述

我在MVC 3工作在我的项目，并寻找一种方式，它可以将此功能添加到我的所有Html.TextboxFor：结果
当用户键入富，并提交形式，在控制器级别我得到它模型FUU为例。

I'm working on my project in MVC 3 and searching for a way, which can add this functionality to all my Html.TextboxFor:
When user type "foo" and submit form, in controller level I get it by model as "fuu" for example.

我需要这个功能被一些人来代替一些统一code字符。

I need this feature to replace some Unicode characters by some others.

让我显示我查看code和控制器：

Let I show my code in View and Controller:

查看：

@Html.TextBoxFor(model => model.Title) // user will type "foo", in TitleTexbox! 

控制器：

 [HttpPost]
    public virtual ActionResult Create(MyModel model)
    {
     var x = model.Title;
     //I need variable x have 'fuu' instead of 'foo', replaceing "o" by "u"
     //...
    }

我应该写Html.TextboxFor的覆盖？

Should I write an override for Html.TextboxFor?

推荐答案

因为我从你的code明白，你从你的模型预计要准备好（已处理），当它传递给控制器​​action.and完成这个唯一的办法就是使用模型绑定。
但这种方法仅限于特定类型/类/模型/视图模型或任何你的名字。

as i understood from your code , you expect from your model to be ready(processed) when it passed to your controller action.and for accomplishing this the only way is using model-binding. but this approach is limited to particular type/class/model/viewmodel or whatever you name it.

您可以创建自己的模型绑定器为：

you can create your own modelBinder as:

 public class MyCustomModelBinder : DefaultModelBinder
    {
          public override object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) 
          {
              var request = controllerContext.HttpContext.Request;
              var myModel= (MyModel ) base.BindModel(controllerContext, bindingContext) ?? new MyModel ();

              myModel.Title.Replace('o','u');

              return myModel;
         }
    }

，然后你最Global.asax中注册您的自定义模型绑定

and then you most register your Custom Model Binder in Global.asax

  ModelBinders.Binders.Add(typeof(MyModel),new MyCustomModelBinder());

请改变你的操作是这样的：

make change in your action like this:

   [HttpPost]
    public virtual ActionResult Create([ModelBinder(typeof(MyCustomModelBinder))] MyModel model)
    {
     var x = model.Title;
     //here you will have the modified version of your model 
     //...
    }

好运。

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