[英]Binding to a Collection of Strongly-Typed Objects in ASP.NET MVC
I have a data class that contains a number of fields: 我有一个包含许多字段的数据类:
public class Person
{
public int id { get; set }
public string Name { get; set; }
public double Rate { get; set; }
public int Type { get; set; }
}
If I understand Scott Hanselman's take on binding arrays of objects , I should be able to create a form view that renders HTML that looks like this: 如果我理解Scott Hanselman对绑定对象数组的看法,我应该能够创建一个表单视图,呈现如下所示的HTML:
<input name="Person[0].id" value="26" type="hidden" />
<input name="Person[0].Name" value="Tom Smith" type="text" />
<input name="Person[0].Rate" value="40.0" type="text" />
<select name="Person[0].Type">
<option selected="selected" value="1">Full Time</option>
<option value="2">Part Time</option>
</select>
<input name="Person[1].id" value="33" type="hidden" />
<input name="Person[1].Name" value="Fred Jones" type="text" />
<input name="Person[1].Rate" value="45.0" type="text" />
<select name="Person[1].Type">
<option value="1">Full Time</option>
<option selected="selected" value="2">Part Time</option>
</select>
I should then be able to capture this data in my controller with an action method that looks like this: 然后,我应该能够使用如下所示的操作方法在我的控制器中捕获此数据:
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult People(Person[] array)
{
// Do stuff with array
}
But it doesn't work. 但它不起作用。 The array variable is always null.
数组变量始终为null。 I interpret this as the data binding is not working.
我解释这一点,因为数据绑定不起作用。 But why?
但为什么?
Your fields should be named array[0].id, array[0].Type, ... 您的字段应命名为array [0] .id,array [0] .Type,...
They should have the name of the array instance, not the name of the Type inside the array. 它们应该具有数组实例的名称,而不是数组中Type的名称。
Alternatively you could change the signature of the actioncontroller to: Person[] Person 或者,您可以将actioncontroller的签名更改为:Person [] Person
You get the point :-) 你明白了这一点:-)
<input name="Person[0].Rate" value="40.0" type="text" />
应该:
<input name="array[0].Rate" value="40.0" type="text" />
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