asp.net-mvc ASP.NET MVC - 使用多个模型查看
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ASP.NET MVC - View with multiple models
提问by alex2k8
I am trying to generate such HTML
我正在尝试生成这样的 HTML
<form action="/some/process" method="post">
<input type="hidden" name="foo.a" value="aaa"/>
<input type="hidden" name="bar.b" value="bbb"/>
<input type="submit" />
</form>
so it can be processed by this Action:
所以它可以被这个Action处理：
public ActionResult Process(Foo foo, Bar bar)
{
...
}
Given the Action code
鉴于动作代码
public ActionResult Edit()
{
ViewData["foo"] = new Foo { A = "aaa" };
ViewData["bar"] = new Bar { B = "bbb" };
return View();
}
what should I write in Edit.aspx view? I don't want to write names 'foo.a' and 'bar.b' manually.
我应该在 Edit.aspx 视图中写什么？我不想手动编写名称 'foo.a' 和 'bar.b'。
回答by Wyatt Barnett
String-indexed ViewDatais bad. What you probably want to do is make a little wrapper class for your multi-variable view data and pass that to a strongly typed view. IE:
字符串索引ViewData不好。您可能想要做的是为您的多变量视图数据创建一个小包装类，并将其传递给强类型视图。IE：
public class FooBarViewData
{
public Foo Foo {get; set;}
public Bar Bar {get; set;}
}
public ActionResult Edit()
{
FooBarViewData fbvd = new FooBarViewData();
fbvd.Foo = new Foo(){ A = "aaa"};
fbvd.Bar = new Bar(){ B = "bbb"};
return View(fbvd);
}
Then your view is just strongly typed to FooBarViewDataand you can call members of that object using the Modelproperty.
然后您的视图只是强类型化FooBarViewData，您可以使用该Model属性调用该对象的成员。
回答by tvanfosson
You have a couple of choices. First, you can reference them from ViewData and use an HtmlHelper extension. Or you could create a view-specific model and use a strongly-typed viewpage for Edit.aspx.
你有几个选择。首先，您可以从 ViewData 引用它们并使用 HtmlHelper 扩展。或者，您可以创建特定于视图的模型并为 Edit.aspx 使用强类型视图页面。
public class EditModel
{
public Foo foo { get; set; }
public Bar bar { get; set; }
}
public ActionResult Edit()
{
var model = new EditModel();
model.foo = new Foo { A = "aaa" };
model.bar = new Bar { B = "bbb" };
return View( model );
}
(Edit.aspx is of type ViewPage<EditModel>)
（Edit.aspx 是类型ViewPage<EditModel>）
Either way, the HtmlHelper extension will pick up any initial values.
无论哪种方式，HtmlHelper 扩展都会选择任何初始值。
<form action="/some/process" method="post">
<%= Html.Hidden( "foo.A" ) %>
<%= Html.Hidden( "bar.B" ) %>
</form>
回答by David Lee
The solution above may be outdated. This solution seems to work for ASP.Net MVC5+.
上面的解决方案可能已经过时。此解决方案似乎适用于 ASP.Net MVC5+。
You're going to have to use the ViewModelmethod. This is an excellent tutorial that you can check out.
您将不得不使用该ViewModel方法。这是一个很好的教程，你可以看看。
http://tutlane.com/tutorial/aspnet-mvc/how-to-use-viewmodel-in-asp-net-mvc-with-example
http://tutlane.com/tutorial/aspnet-mvc/how-to-use-viewmodel-in-asp-net-mvc-with-example
You are going to have to join multiple models into one ViewModeland grab all the properties from each models you want to use into the ViewModel.
您将不得不将多个模型合并为一个模型，ViewModel并从您要使用的每个模型中获取所有属性到ViewModel.
BUT, it is HIGHLYadvised that you create a new Controllerand a new Viewto accomodate the newly created ViewModel. Read the tutorial.
但是，强烈建议您创建一个新的Controller和一个新的View来容纳新创建的ViewModel. 阅读教程。
public class FooBarViewModel
{
public string A {get; set;} //Property for Foo
public string B {get; set;} //Property for Bar
}
public ActionResult Edit()
{
FooBarViewModel fooBarVM = new FooBarViewModel();
fooBarVM.A = "aaa";
fooBarVM.B = "bbb";
return View(fooBarVM);
}
But in this case, you should be able to pass the ViewModelinto a different view. Just make sure you declare this similar directive correctly in the foobar.cshtmlpage.
但是在这种情况下，您应该能够将 传递ViewModel到不同的视图中。只要确保在foobar.cshtml页面中正确声明了这个类似的指令。
@model FooBar.Models.FooBarViewModel
回答by Abdul G
I was struggling for a while trying to get two models to work, and most of the answers I came across was meant for earlier versions of MVC.
我挣扎了一段时间试图让两个模型工作，我遇到的大多数答案都是针对早期版本的 MVC。
I found the following tutorial works best for MVC 5 as suggested by David Lee:
我发现以下教程最适合David Lee建议的 MVC 5 ：
http://tutlane.com/tutorial/aspnet-mvc/how-to-use-viewmodel-in-asp-net-mvc-with-example
http://tutlane.com/tutorial/aspnet-mvc/how-to-use-viewmodel-in-asp-net-mvc-with-example
I created a join and selected only the columns I needed from both Models.
我创建了一个连接并仅从两个模型中选择了我需要的列。
I had it working with partial views
我让它与部分视图一起工作
In view.cshtml
在view.cshtml
@model IEnumerable<Test.Models.TestViewModel>
...
@foreach (var item in Model)
{
<tr>
<td style="text-align:center;vertical-align:middle">
@Html.DisplayFor(modelItem => item.TestName)
...
