如何将DataGrid中的TextBox绑定到Wpf中的列表？

Question

我正在开发一个新的Wpf项目，并且正在努力将DataGrid中的TextBox绑定到Wpf中的对象列表。 任何人都可以帮我修理吗？

这是我的代码（简化版），通过绑定我的 Orders 对象来生成Datagrid行。 用户可以更改订单项，它应该绑定到下划线对象。 用户点击阅读订单按钮后，我会在文本块中显示更改。问题：TextBox中的更改未更新到Orders对象中。

ObservableCollection<StxOrdr> Orders = new ObservableCollection<StxOrdr>();

private void Window_Initialized(object sender, EventArgs e)
{
    Orders.Add(new StxOrdr() { ID = 1, Desc = "Order-#1", Item1 = "11", Item2 = "12", Item3 = "13" });
    Orders.Add(new StxOrdr() { ID = 2, Desc = "Order-#2", Item1 = "21", Item2 = "22", Item3 = "23" });
    Orders.Add(new StxOrdr() { ID = 3, Desc = "Order-#3", Item1 = "31", Item2 = "32", Item3 = "33" });                        
    Dg2.ItemsSource = Orders;
}

private void ReadUpdatedOrders(object sender, RoutedEventArgs e)
{
    TxtBlk.Text = "";
    foreach (StxOrdr odr in Orders)
    {
        TxtBlk.Text += string.Format("{0}:   {1} - {2} - {3}\n", odr.Desc, odr.Item1, odr.Item2, odr.Item3);
    }
}

Window Xml

<DataGrid x:Name="Dg2"  HorizontalAlignment="Left" Margin="21,295,0,0" VerticalAlignment="Top" Height="230" Width="451"
AutoGenerateColumns="false" ItemsSource="{Binding Source=Orders}" >
<DataGrid.Columns>
    <DataGridTextColumn Header="ID" Binding="{Binding ID}" />
    <DataGridTextColumn Header="Desc" Binding="{Binding Desc}"   Width="80"/>
    <DataGridTextColumn Header="Item 1" Binding="{Binding Item1}"  Width="60"/>
    <DataGridTextColumn Header="Item 2" Binding="{Binding Item2}"  Width="60"/>
    <DataGridTemplateColumn Header="Item 3" >
        <DataGridTemplateColumn.CellTemplate>
            <DataTemplate>
                <TextBox Text="{Binding Item3, Mode=OneWayToSource}" Width="60" />                            
            </DataTemplate>
        </DataGridTemplateColumn.CellTemplate>
    </DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>

<TextBlock x:Name="TxtBlk" HorizontalAlignment="Left" Margin="489,295,0,0" TextWrapping="Wrap" Text="  Updated order details:" 
           VerticalAlignment="Top" Height="176" Width="408" Background="#FFFFFCBC"/>
<Button x:Name="Btn2_Copy" Content="Read Orders" HorizontalAlignment="Left" Margin="489,476,0,0" 
        VerticalAlignment="Top" Width="94" Click="ReadUpdatedOrders"/>

用户界面窗口的屏幕截图

Answer 1

我认为大多数事情都是正确的。确保Orders.cs实现了INotifyPropertyChanged和这行代码

<TextBox Text="{Binding Item3, Mode=OneWayToSource}" Width="60" />  

更新为Mode = TwoWay和UpdateSourceTrigger = PropertyChanged。我会改为

<TextBox Text="{Binding Item3, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Width="60" />