wpf - WPF：将 DataGrid 放入 ComboBox

Question

在 WPF 中，如何将 DataGrid 放在 ComboBox 中以显示多列？像下面这样的东西似乎没有做任何事情：

<ComboBox>
    <ItemsPanelTemplate>
        <DataGrid>
            <DataGrid.Columns>
                <DataGridTextColumn Binding="{Binding customerName}" />                 
                <DataGridTextColumn Binding="{Binding billingAddress}" />
            </DataGrid.Columns>
        </DataGrid>
    </ItemsPanelTemplate>
</ComboBox>

Answer 1

好的，如果我理解正确，您有一个 List List<Customer>，列表 List 绑定到 ComboBox，每个子列表绑定到 DataGrid

例子：

xml:

<Window x:Class="WpfApplication13.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525" Name="UI">

    <Grid DataContext="{Binding ElementName=UI}">
        <ComboBox DataContext="{Binding ComboItems}" Height="27" VerticalAlignment="Top" >
            <DataGrid ItemsSource="{Binding}" AutoGenerateColumns="False" ColumnWidth="150" >
                <DataGrid.Columns>
                    <DataGridTextColumn Header="Name" Binding="{Binding CustomerName}" />
                    <DataGridTextColumn Header="Address" Binding="{Binding BillingAddress}" />
                </DataGrid.Columns>
            </DataGrid>
        </ComboBox>
    </Grid>
</Window>

代码：

public partial class MainWindow : Window, INotifyPropertyChanged
{

    private ObservableCollection<Customer> _comboItems = new ObservableCollection<Customer>();

    public MainWindow()
    {
        InitializeComponent();
        ComboItems.Add(new Customer { CustomerName = "Steve", BillingAddress = "Address" });
        ComboItems.Add(new Customer { CustomerName = "James", BillingAddress = "Address" });
    }

    public ObservableCollection<Customer> ComboItems
    {
        get { return _comboItems; }
        set { _comboItems = value; }
    }
}


public class Customer : INotifyPropertyChanged
{
    private string _customerName;
    private string _billingAddress;

    public string CustomerName
    {
        get { return _customerName; }
        set { _customerName = value; RaisePropertyChanged("CustomerName"); }
    }

    public string BillingAddress 
    {
        get { return _billingAddress; }
        set { _billingAddress = value; RaisePropertyChanged("BillingAddress"); }
    }

    public event PropertyChangedEventHandler PropertyChanged;
    private void RaisePropertyChanged(string propertyName)
    {
        if (PropertyChanged != null)
            PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
    }
}

结果：

Answer 2

对于其他寻找这个的人，我在这里找到了一个实现。

Answer 3

<ComboBox Width="150" Height="30" Name="cb">
            <ComboBox.ItemTemplate>
                <DataTemplate>
                    <DataGridRow DataContext="{Binding}" Height="30" Width="150">
                        <DataGridRow.Template>
                            <ControlTemplate>
                                <Grid> 
                                    <Grid.ColumnDefinitions>
                                        <ColumnDefinition/>
                                        <ColumnDefinition Width="5"/>
                                        <ColumnDefinition/>
                                    </Grid.ColumnDefinitions>
                                    <TextBlock Text="{Binding customerName}" Margin="2"></TextBlock>
                                    <Border  BorderBrush="Black" BorderThickness="1" Grid.Column="1" Margin="2"></Border>
                                    <TextBlock Grid.Column="2" Text="{Binding billingAddress}" Margin="2"></TextBlock>
                                </Grid>

                            </ControlTemplate>
                        </DataGridRow.Template>

                    </DataGridRow>
                </DataTemplate>
            </ComboBox.ItemTemplate>
        </ComboBox>