Question

我想在数据网格中创建一个简单的主 - 详细视图我尝试将DataGirdComboBoxColumn绑定到DataSet，但它无效。

这是我的xaml代码：

<DataGrid x:Name="DataGrid1" Grid.Column="0" Grid.Row="0" AlternatingRowBackground="#FFF0F0F0" ItemsSource="{Binding}" Height="420" AutoGenerateColumns="False">
    <DataGrid.Columns>
        <DataGridTextColumn Header="ID" Binding="{Binding AirplaneID}" IsReadOnly="True" MinWidth="30"/>
        <DataGridTextColumn Header="Model" Binding="{Binding Model}" IsReadOnly="True" Width="Auto" MinWidth="160"/>
        <DataGridTextColumn Header="Fuel" Binding="{Binding Fuel}" MinWidth="50" />

        <DataGridComboBoxColumn x:Name="ComboBoxColumnPass" Header="Passenger" DisplayMemberPath="Name"
                                        SelectedValueBinding="{Binding AirplaneID, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" SelectedValuePath="AirplaneID"/>   
    </DataGrid.Columns>
    <DataGrid.ContextMenu>
        <ContextMenu>
            <MenuItem Command="ApplicationCommands.New" ToolTip="Fügt eine neue Zeile hinzu"/>
            <MenuItem Command="ApplicationCommands.Delete"  ToolTip="Löscht das ausgewählte Element"/>
        </ContextMenu>
    </DataGrid.ContextMenu>
    <DataGrid.RowDetailsTemplate>
        <DataTemplate>
            <StackPanel Orientation="Horizontal" Margin="5">
                <TextBlock FontSize="12" TextWrapping="Wrap" Text="{Binding Detail}" />
            </StackPanel>
        </DataTemplate>
    </DataGrid.RowDetailsTemplate>
</DataGrid>

这是我的C＃代码：

namespace WpfApplicationAirplaneDB
{
    AirplaneDBDataSet AirplaneDataSet = new AirplaneDBDataSet();
    AirplaneDBDataSetTableAdapters.AirplaneTableAdapter AirTableAdapter = new AirplaneDBDataSetTableAdapters.AirplaneTableAdapter();
    AirplaneDBDataSetTableAdapters.PassengerTableAdapter PassTableAdapter = new AirplaneDBDataSetTableAdapters.PassengerTableAdapter();

    public MainWindow()
    {
        InitializeComponent();

        AirTableAdapter.Fill(AirplaneDataSet.Airplane);
        PassTableAdapter.Fill(AirplaneDataSet.Passenger);

        DataGrid1.ItemsSource = AirplaneDataSet.Airplane.DefaultView;
        ComboBoxColumnPass.ItemsSource = AirplaneDataSet.Passenger.DefaultView;

    }
}

这就是错误：

PresentationFramework.dll中出现未处理的“System.InvalidOperationException”类型异常附加信息：TwoWay-oder OneWayToSource-Bindungen funktionieren nicht mitderschreibgeschütztenEigenschaft“AirplaneID”vom Typ“System.Data.DataRowView”。

（对不起德语异常）

Answer 1

似乎AirplaneID是只读的。要么使其可写，要么将绑定更改为OneWay。

将DataGirdComboBoxColumn绑定到DataSet不起作用

1 个答案: