在presentation层控制修改 [英] Control modification in presentation layer

问题描述

我使用的GridView和结合发生在presenter层数据，但例如小区1已被修改并转换为超链接控制，然后我打电话给在presenter层的RowDataBound事件，做这里面修改event.Is这是一个好有MVP？

I am using GridView and the data binding occurs in Presenter layer but the cell 1 for example has to be modified and converted to a HyperLink control then I have to call the RowDataBound event in Presenter layer and do the modification inside that event.Is this a OK with MVP?

推荐答案

我一般都在数据绑定，并在视图级别事件处理。通过在presenter这样做，你所创建的presenter，并要避免视图之间的相关性。我不知道你将如何单元测试presenter方法​​的呼唤 .DataBind（）上一个GridView。

I would typically do the data binding and event handling at the View level. By doing it in the Presenter, you are creating a dependency between the Presenter and the View that you want to avoid. I'm not sure how you would unit test a Presenter method that's calling .DataBind() on a GridView.

我会做什么（什么，我认为这是标准）是一种属性添加到$ C $您的视图类的那些重新presents为GridView数据c-后面。所以说，你的GridView显示的员工，物业可能是这样

What I would do (and what I believe is standard) is add a property to the code-behind of your view class that represents the data for the GridView. So say your GridView shows employees, the property might be something like

public List<Employee> Employees 
{ 
    get { return (List<Employee>)GridView1.DataSource; }
    set // The Presenter calls this
    {
        GridView1.DataSource = value;
        GridView1.DataBind();
    }
}

在presenter将简单地设置该属性，然后你会做数据绑定和事件处理按照通常的做法与web表单。

The presenter would simply set this property and then you would do the data binding and event handling as you typically would with webforms.

这也将让您进行单元测试presenter如果你想。假设您的视图实现一个接口，可以使用不同的执行单元测试，即制定者不会把 .DataBind（），它可能仅仅是一个自动属性。你可以创建一个模拟来看，它传递给presenter，然后测试你的属性不为null，或沿着这些线路的东西。

This will also allow you to unit test your Presenter if you wish to. Assuming that your view implements an interface, you can use a different implementation for your unit test, i.e. the setter wouldn't call .DataBind(), it might simply be an automatic property. You could create a mock view, pass it to the Presenter, and then test that your property is not null, or something along those lines.

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