在模型对象上设置属性？

Hi,

嗨，

I am building a ASP.NET MVC site and have runned across a problem. In my project I got a modelview class that contains a couple of properties, for example :

我正在构建一个ASP.NET MVC站点，并遇到了一个问题。在我的项目中，我得到了一个包含几个属性的modelview类，例如：

public class myModelView
{
  public int MyProperty1(){ get; set;}
  public int MyProperty2(){ get; set;}
  public int MyProperty3(){ get; set;}
}

This modelview class is bound to a typed view where I need to be able to set the properties. How do I do this with javascript/jquery? I have tried with Model.MyProperty1 = 1, but that does not work?

此modelview类绑定到一个类型化视图，我需要能够设置属性。我如何使用javascript / jquery执行此操作？我尝试使用Model.MyProperty1 = 1，但这不起作用？

BestRegards

最好的祝福

2 个解决方案

#1

You cannot set server side values with javascript. You could bind those values to input fields (textboxes, hidden fields, textareas, dropdowns, ...) using HTML helpers and then using javascript you could modify the values of those input fields.

您无法使用javascript设置服务器端值。您可以使用HTML帮助器将这些值绑定到输入字段（文本框，隐藏字段，textareas，下拉列表...），然后使用javascript修改这些输入字段的值。

So for example if you have a hidden field:

例如，如果您有隐藏字段：

<input type="hidden" name="foo" id="foo" value="bar" />

you could modify its value like this:

你可以像这样修改它的值：

$('#foo').val('some new value');

Then when the containing form is submitted to the server the new value will be bound to your view model.

然后，当将包含的表单提交给服务器时，新值将绑定到您的视图模型。

#2

You are trying to set the server-side property on the client - it won't work. Your view model exists only on the server when your view is rendered. Once the response is sent to the browser your class doesn't exist any more.

您正在尝试在客户端上设置服务器端属性 - 它将无法正常工作。只有在呈现视图时，您的视图模型才存在于服务器上。将响应发送到浏览器后，您的课程就不再存在了。

If you want to pass some data from client to server you have to:

如果要将一些数据从客户端传递到服务器，则必须：

post a form, or
张贴表格，或
make an AJAX call
进行AJAX通话

Take a look at jQuery ajax method.

看看jQuery ajax方法。

ViewModel is used to pass data from controller to view so the view can render HTML. After the HTML is rendered ViewModel is discarded. There is no point is setting ViewModel properties in the view as nothing will use them later on.

ViewModel用于将数据从控制器传递到视图，因此视图可以呈现HTML。 HTML呈现后，ViewModel将被丢弃。没有必要在视图中设置ViewModel属性，因为稍后什么都不会使用它们。

I believe you're coming from WebForms (UpdatePanel) background. The MVC is a totaly different concept/architecture. It works in a different way then WebForms / UpdatePanel.

我相信你来自WebForms（UpdatePanel）背景。 MVC是一个完全不同的概念/架构。它的工作方式与WebForms / UpdatePanel不同。

#1