在UserControl中创建一个ListBox并绑定对象

时间:2014-03-10 13:14:49

标签: c# xaml windows-runtime windows-store-apps

我想在UserContorl中创建一个ListBox,而不是使用该userControl在许多页面中显示和“管理”该列表。

例如,我有一个卡车列表,每个对象卡车都有一些属性,如名称,id ...

现在我创建自己的UserControl

<UserControl
x:Class="Crud.View.ListboxInUserControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:Crud.View"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
Name="myUserControl"
d:DesignHeight="300"
d:DesignWidth="400">

<Grid>
    <ListBox x:Name="aName" ItemsSource="{Binding ??}">
        <StackPanel>
            <StackPanel Orientation="Vertical" Margin="0,20,0,0">
                <TextBlock Text="Id"/>
                <TextBlock Text="{Binding Id}" />
            </StackPanel>
            <StackPanel Orientation="Vertical" Margin="0,20,0,0">
                <TextBlock Text="Name"/>
                <TextBlock Text="{Binding Name}" />
            </StackPanel>
        </StackPanel>
    </ListBox>
</Grid>

如何绑定代码中的项目?

如何管理列表中的“点击”?

在Page.xaml中我想写类似

的内容
<LUC:ListboxInUserControl x:Name="MyListbox DataContext="{Binding}"/>

并在

背后的代码中
private ObservableCollection<Truck> TestList { get; set; }
...
TestList = await TruckService.GetAll(); //a method to get the list 
MyListbox.MyItemsSource = TestList;

1 个答案:

答案 0 :(得分:1)

将列表框添加到UserControl,

 <ListBox x:Name="aName" SelectionChanged="aName_SelectionChanged">
        <ListBox.ItemTemplate>
            <DataTemplate>
                <StackPanel>
                    <StackPanel Orientation="Vertical" Margin="0,20,0,0">
                        <TextBlock Text="Id"/>
                        <TextBlock Text="{Binding Id}" />
                    </StackPanel>
                    <StackPanel Orientation="Vertical" Margin="0,20,0,0">
                        <TextBlock Text="Name"/>
                        <TextBlock Text="{Binding Name}" />
                    </StackPanel>
                </StackPanel>
            </DataTemplate>
        </ListBox.ItemTemplate>
    </ListBox>

添加用于获取选择的事件处理程序和listbox的公共属性,以便在后面的用户控制代码中绑定对象,

    public event EventHandler<EventArgs> SelectionChangedEvent;

    public ListBoxInUserControl()
    {
        this.InitializeComponent();
    }

    private void aName_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        SelectionChangedEvent(sender, new EventArgs());
    }


    private ListBox myVar;

    public ListBox MyProperty
    {
        get { return aName; }
        set { aName = value; }
    }

然后您可以在xaml中添加此usercontrol,

   <local:ListBoxInUserControl x:Name="uc_ListBoxInUserControl"       SelectionChangedEvent="uc_ListBoxInUserControl_SelectionChangedEvent">  </local:ListBoxInUserControl>

在后面的代码中,您可以绑定数据,

 uc_ListBoxInUserControl.MyProperty.ItemsSource = TestList;

和访问选择已更改事件,

 private void uc_ListBoxInUserControl_SelectionChangedEvent(object sender, EventArgs e)
    {

    }