在下面的类中,列表框的itemssource应该绑定到Interfaces属性。
public class BaseClass : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
private const string TYPE_TITLE = "Type";
private string _Type;
public string Type
{
get { return _Type; }
set { _Type = value; this.NotifyPropertyChanged(PropertyChanged, TYPE_TITLE); }
}
public ObservableCollection<string> Interfaces { get; set; }
public BaseClass()
{
Interfaces = new ObservableCollection<string>();
}
public void Reset()
{
_Type = null;
Interfaces.Clear();
}
}
在该列表框中,所选项目应该能够编辑为内联编辑方案,
<DataTemplate x:Key="BaseClass_Interfaces_InlineEdit_Template">
<TextBox Text="{Binding Mode=TwoWay, Path=., NotifyOnTargetUpdated=True, UpdateSourceTrigger=PropertyChanged}" TextChanged="TextBox_TextChanged"/>
</DataTemplate>
<DataTemplate x:Key="BaseClass_Interfaces_InlineView_Template">
<TextBlock Text="{Binding Path=., UpdateSourceTrigger=PropertyChanged}" />
</DataTemplate>
<Style TargetType="{x:Type ListBoxItem}" x:Key="BaseClass_Iterfaces_ItemStyle_Template">
<Setter Property="ContentTemplate" Value="{StaticResource BaseClass_Interfaces_InlineView_Template}" />
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="ContentTemplate" Value="{StaticResource BaseClass_Interfaces_InlineEdit_Template}" />
</Trigger>
</Style.Triggers>
</Style>
ListBox有一个容器作为父层次结构,其DataContext属性绑定到BaseClass的实例,因此ListBox可以绑定到Interfaces属性。
<ListBox Grid.Row="2" Grid.ColumnSpan="2" Margin="3" ItemsSource="{Binding Interfaces, Mode=TwoWay}" SelectionMode="Single"
ItemContainerStyle="{StaticResource ResourceKey=BaseClass_Iterfaces_ItemStyle_Template}" />
有两个问题:
答案 0 :(得分:0)
我找到了答案!
我想知道的是文本框改变了文本属性但是更改没有传播到源,基于link绑定机制对源的属性起作用,换句话说,属性的更改不会监视对象本身。
解决方案是围绕字符串的包装类,我之前为另一个原始类型(bool)编写了这个包装器。
public class Wrapper<T>
{
public T Item { get; set; }
public Wrapper(T value = default(T))
{
Item = value;
}
public static implicit operator Wrapper<T>(T item)
{
return new Wrapper<T>(item);
}
public static implicit operator T(Wrapper<T> item)
{
if (null != item)
return item.Item;
return default(T);
}
}
所以编辑数据模板改变如下
<DataTemplate x:Key="BaseClass_Interfaces_InlineEdit_Template">
<TextBox Text="{Binding Mode=TwoWay, Path=Item, UpdateSourceTrigger=PropertyChanged}" />
</DataTemplate>
每件事都充满了魅力!!!