[英]WP7 - listbox Binding
I have an ObservableCollection that I want to bind to my listbox... 我有一个ObservableCollection,我想绑定到我的列表框...
lbRosterList.ItemsSource = App.ViewModel.rosterItemsCollection;
However, in that collection I have another collection within it: 但是,在该集合中,我有另一个集合:
[DataMember]
public ObservableCollection<PersonDetail> ContactInfo
{
get
{
return _ContactInfo;
}
set
{
if (value != _ContactInfo)
{
_ContactInfo = value;
NotifyPropertyChanged("ContactInfo");
}
}
}
PersonDetail contains 2 properties: name and e-mail PersonDetail包含2个属性: 名称和电子邮件
I would like the listbox to have those values for each item in rosterItemsCollection 我希望列表框中包含rosterItemsCollection中每个项目的值
RosterId = 0;
RosterName = "test";
ContactInfo.name = "Art";
ContactInfo.email = "art@something.com";
RosterId = 0;
RosterName = "test"
ContactInfo.name = "bob";
ContactInfo.email = "bob@something.com";
RosterId = 1;
RosterName = "test1"
ContactInfo.name = "chris";
ContactInfo.email = "chris@something.com";
RosterId = 1;
RosterName = "test1"
ContactInfo.name = "Sam";
ContactInfo.email = "sam@something.com";
I would like that listboxes to display the ContactInfo information. 我希望列表框显示ContactInfo信息。
I hope this makes sense... 我希望这是有道理的...
My XAML that I've tried with little success: 我尝试过的XAML收效甚微:
<listbox x:Name="lbRosterList" ItemsSource="rosterItemCollection">
<textblock x:name="itemText" text="{Binding Path=name}"/>
What am I doing incorrectly? 我做错了什么?
Change your Binding Path to this: 将您的绑定路径更改为:
<ListBox x:Name="lbRosterList" DataContext="{Binding}" ItemsSource="{Binding rosterItemCollection}">
<TextBlock x:Name="itemText" Text="{Binding Path=ContactInfo.name}"/>
Then in your code do this (after InitializeComponents in the page constructor): 然后在你的代码中执行此操作(在页面构造函数中的InitializeComponents之后):
lbRosterList.DataContext = App.ViewModel;
Excellent reference for this kind of thing in this free book by Charles Petzold: Chapter 12, pg 363. Charles Petzold在这本免费书中对此类事物的极好参考:第12章,第363页。
You can also remove the DataContext
attribute from the listbox and set the DataContext
of the page itself. 您还可以从列表框中删除
DataContext
属性,并设置页面本身的DataContext
。 If you create a new databound application, you will see what I mean with their default example. 如果您创建一个新的数据绑定应用程序,您将看到我们的默认示例。
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