c# - WPF绑定(bind)问题

Question

我有这个对象:

    class a 
    { 
        public string Application; 
        public DateTime From, To;
    }

然后我用它声明这个列表:

    ObservableCollection<a> ApplicationsCollection = 
        new ObservableCollection<a>();

在我的 XAML 中我有:

    <ListView Height="226.381" Name="lstStatus" Width="248.383" HorizontalAlignment="Left" Margin="12,0,0,12" VerticalAlignment=">
        <ListView.View>
            <GridView>
                <GridViewColumn Width="140" Header="Application"
                                DisplayMemberBinding="{Binding Path=Application}"/>
                <GridViewColumn Width="50" Header="From" 
                                DisplayMemberBinding="{Binding Path=From}"/>
                <GridViewColumn Width="50" Header="To" 
                                DisplayMemberBinding="{Binding Path=To}"/>
            </GridView>
        </ListView.View>
    </ListView>

当我这样做时:

        lstStatus.ItemsSource = ApplicationsCollection;

我遇到了一堆错误，但我的 ListView 中没有显示任何内容:

System.Windows.Data Error: 39 : BindingExpression path error: 'Application' property not found on 'object' ''a' (HashCode=60325168)'. BindingExpression:Path=Application; DataItem='a' (HashCode=60325168); target element is 'TextBlock' (Name=''); target property is 'Text' (type 'String')
System.Windows.Data Error: 39 : BindingExpression path error: 'From' property not found on 'object' ''a' (HashCode=60325168)'. BindingExpression:Path=From; DataItem='a' (HashCode=60325168); target element is 'TextBlock' (Name=''); target property is 'Text' (type 'String')
System.Windows.Data Error: 39 : BindingExpression path error: 'To' property not found on 'object' ''a' (HashCode=60325168)'. BindingExpression:Path=To; DataItem='a' (HashCode=60325168); target element is 'TextBlock' (Name=''); target property is 'Text' (type 'String')

它显然将对象视为具有 a 类型并且 a 显然具有正确的属性，那么为什么这不起作用？

Answer 1

看起来 WPF 不能直接绑定(bind)到字段，你必须像这样使用属性:

class a
{
    public string Application { get; set; }
    public DateTime From { get; set; }
    public DateTime To { get; set; }
}