MVC从View将数据发送到控制器 [英] MVC sending data from View to Controller

问题描述

我很新的MVC 3。

我知道如何从一个控制器发出一个强类型的对象视图。我现在已经是它包含一个表/表单其中包括该数据的视图。

I know how to send a strongly typed object from a Controller to a View. What I have now, is a View which contains a table/form which consists of that data.

，而他们是在该视图（HTML页面），用户可以更改这些数据。

The user can change that data whilst they're are in that View (html page).

当他们点击保存，我怎么从视图发送数据到控制器，这样我可以更新我的数据库。

When they click on "Save", how do I send the data from the View back to the Controller so that I can update my database.

我是否过载控制方法，以便它接受模型类型的参数？能否请您提供一些源$ C ​​$ C。

Do I overload the Controller method so that it accepts a parameter of the model type? Can you please provide some source code.

（请不要持续显示数据到数据库code，我知道该怎么做一部分）。

(Please do not show code of persisting data to a database, I know how to do that part).

非常感谢你对我的帮助。

Thank you very much for helping me.

我也要用preFER @ Html.BeginForm（）

I would also prefer using @Html.BeginForm()

推荐答案

我喜欢创造我的岗位数据所做的操作方法。因此，让我们假设你有一个UserViewModel：

I like creating an action method made for my post data. So let's say you have a UserViewModel:

public class UserViewModel
{
    public int Id { get; set; }
    public string Name { get; set; }
}

然后，UserController的：

Then a UserController:

public class UserController
{
    [HttpGet]
    public ActionResult Edit(int id)
    {
        // Create your UserViewModel with the passed in Id.  Get stuff from the db, etc...
        var userViewModel = new UserViewModel();
        // ...

        return View(userViewModel);
    }

    [HttpPost]
    public ActionResult Edit(UserViewModel userViewModel)
    {
        // This is the post method.  MVC will bind the data from your
        // view's form and put that data in the UserViewModel that is sent
        // to this method.

        // Validate the data and save to the database.

        // Redirect to where the user needs to be.
    }
}

我假设你在你看来有一个表格了。你要确保表单发送数据到正确的操作方法。在我的例子，你会创建窗体就像这样：

I'm assuming you have a form in your view already. You'll want to make sure that the form posts the data to the correct action method. In my example, you'd create the form like so:

@model UserViewModel

@using (Html.BeginForm("Edit", "User", FormMethod.Post))
{
    @Html.TextBoxFor(m => m.Name)
    @Html.HiddenFor(m => m.Id)
}

这一切的关键是模型绑定MVC一样。利用HTML佣工，像我用的Html.TextBoxFor。此外，你会发现视图code我加的顶线。该@model告诉你会发送一个UserViewModel的看法。让引擎为你做的工作。

The key to all this is the model binding that MVC does. Make use of the HTML helpers, like the Html.TextBoxFor I used. Also, you'll notice the top line of the view code I added. The @model tells the view you'll be sending it a UserViewModel. Let the engine do work for you.

编辑：良好的通话，这样做都在记事本，忘了ID的HiddenFor

Good call, did that all in Notepad, forgot a HiddenFor for the Id!

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