Question

我试图将数据输入<代码>。清单: 控制:

<ListView Margin="8" Height="400" Width="650" 
    ItemsSource="{Binding Path=MyData}">
    <ListView.View>
         <GridView>
             <GridViewColumn Header="ID" Width="Auto" 
                  DisplayMemberBinding="Binding Path=ID}" >
             </GridViewColumn>
             <GridViewColumn DisplayMemberBinding="{Binding Path=Name}" 
                  Header="Name" Width="100"/>
             <GridViewColumn DisplayMemberBinding="{Binding Path=Price}" 
                  Header="Price" Width="100"/>
             <GridViewColumn DisplayMemberBinding="{Binding Path=Author}" 
                  Header="Author" Width="100"/>
             <GridViewColumn DisplayMemberBinding="{Binding Path=Catalog}" 
                  Header="Catalog" Width="100"/>
           </GridView>
    </ListView.View>
</ListView>

  ObservableCollection<TableInfo> _MyData
  public ObservableCollection<TableInfo> MyData{ get; set; }

但是,它没有在窗户中展示任何东西,但<代码>MyData为。 ObservableCollection。我如何约束数据?

Answer 1

Tanya,

如果你妥善确定你的观察模式,如果你确信你的MyData收集工作不是无效或空洞的,则试图从你的xaml中删除“Path”关键词:

<ListView Margin="8" Height="400" Width="650" 
    ItemsSource="{Binding Path=MyData}">
    <ListView.View>
         <GridView>
             <GridViewColumn Header="ID" Width="Auto" 
                  DisplayMemberBinding="{Binding ID}" >
             </GridViewColumn>
             <GridViewColumn DisplayMemberBinding="{Binding Name}" 
                  Header="Name" Width="100"/>
             <GridViewColumn DisplayMemberBinding="{Binding Price}" 
                  Header="Price" Width="100"/>
             <GridViewColumn DisplayMemberBinding="{Binding Author}" 
                  Header="Author" Width="100"/>
             <GridViewColumn DisplayMemberBinding="{Binding Catalog}" 
                  Header="Catalog" Width="100"/>
           </GridView>
    </ListView.View>
</ListView>

If this doesn t help, check the debug output and post it, we will definitely figure something out.

Answer 2

页: 1 对我来说,我会感到 fine。

Make sure you are setting the DataContext correctly.

yourView.DataContext = YouViewModel;

Answer 3

在第一次评估具有约束力的条约时,它可能(根据你的法典)认为无效。如果你后来将此事通知他,那不会得到通知。

Try to make sure that you create the ObservableCollection in your classes costructor and not overwrite it somewhere else. You could alternativly implement INotifyPropertyChanged and raise a PropertyChanged event on te MyData setter.

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