Question

注意：上述问题与我的问题不同。

如何使一个列表视图显示多个表中的列？这是我的列表视图

<ListView x:Name="lvac" HorizontalAlignment="Left" Height="380" Margin="23,180,0,0" ItemsSource="{Binding Path=''}" VerticalAlignment="Top" Width="949">
        <ListView.View>
            <GridView>
                <GridViewColumn Width="100"  Header="Date" DisplayMemberBinding="{Binding Path=Dated}" />
                <GridViewColumn Width="120"  Header="Transaction Description" DisplayMemberBinding="{Binding Path=AreaLocation}" />
                <GridViewColumn Width="100" Header="Amount In" DisplayMemberBinding="{Binding Path=Amountin}" /> 
                <GridViewColumn Width="100" Header="Amount Out" DisplayMemberBinding="{Binding Path=Amountout}" /> 
                <GridViewColumn Width="100" Header="Balance" DisplayMemberBinding="{Binding Path=Bbalance}" />
            </GridView>
        </ListView.View>
    </ListView>

我列表视图的所有列都属于“BankAccount”，除了属于“银行”的最后一列。如何才能使这成为可能？谢谢

注意：这里我没有使用任何框架工作。

Answer 1

您无法一次将单个网格绑定到多个项目源。您可能要做的是创建一个新类并在其中创建BankAccount和Bank对象，并将此新类的对象绑定到gridview。

Answer 2

是的，这是可能的。答案是拥有一个适当的ViewModel，为ListView提供所有必要的信息。

请看一下这里的链接：

http://en.wikipedia.org/wiki/Model_View_ViewModel

http://msdn.microsoft.com/en-us/magazine/dd419663.aspx

MVVM是采用这种方式的正确方法。

Answer 3

如果您使用 MVVM 模式（在WPF中非常常见），则必须在ViewModel中实现一些“传输”属性，以便以自定义方式在多个绑定之间交换数据

Answer 4

ListView.ItemsSource属性可以绑定到一个集合项。因此，没有直接的方法来实现这一目标。但是，您可以创建一个类，该类封装您要在ListView中显示的所有值。然后创建一个ObservableCollection并将其绑定到ListView.ItemSource。

注意：如果您遵循任何UI模式，您可以更清晰地实现此目的。但是，只是为了保持简单

/// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            _dataItems = GetDataItems();
             DataContext = this;
        }

        private ObservableCollection<Combination> GetDataItems()
        {
            //Here load all of your individual data structure
            //Eg
            var items = new List<Combination>
                            {
                                new Combination(new Bank {AccountNo = 112, AccountName = "somename"},
                                                new Cheque {ChequeDate = DateTime.Now, ChequeNo = 234562}),
                                new Combination(new Bank {AccountNo = 132, AccountName = "name"},
                                                new Cheque {ChequeDate = DateTime.Now, ChequeNo = 215562}),
                                new Combination(new Bank {AccountNo = 212, AccountName = "someother"},
                                                new Cheque {ChequeDate = DateTime.Now, ChequeNo = 114562})
                            };

            return new ObservableCollection<Combination>(items);
        }

        private ObservableCollection<Combination> _dataItems;

        public ObservableCollection<Combination> DataItems
        {
            get { return _dataItems; }
            set { _dataItems = value; }
        }
    }

    public class Combination
    {
        public Combination(Bank bk, Cheque cq)
        {
            ChequeNo = cq.ChequeNo;
            ChequeDate = cq.ChequeDate;
            AccountName = bk.AccountName;
            AccountNo = bk.AccountNo;
        }

        public int ChequeNo { get; set; }
        public DateTime ChequeDate { get; set; }
        public int AccountNo { get; set; }
        public String AccountName { get; set; }
    }

    public class Cheque
    {
        public int ChequeNo { get; set; }
        public DateTime ChequeDate { get; set; }
    }

    public class Bank
    {
        public int AccountNo { get; set; }
        public String AccountName { get; set; }
    }

最后将其绑定到ListView

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:WpfApplication1="clr-namespace:WpfApplication1"
        Title="MainWindow" Height="350" Width="525">

    <Grid>
        <ListView x:Name="lvac" HorizontalAlignment="Left" ItemsSource="{Binding Path=DataItems}" VerticalAlignment="Top">
            <ListView.View>
                <GridView>
                    <GridViewColumn Width="100"  Header="Cheque Num" DisplayMemberBinding="{Binding Path=ChequeNo}" />
                    <GridViewColumn Width="100" Header="Ch. date" DisplayMemberBinding="{Binding Path=ChequeDate}" />
                    <GridViewColumn Width="100" Header="Account Name" DisplayMemberBinding="{Binding Path=AccountName}" />
                    <GridViewColumn Width="100" Header="Account No" DisplayMemberBinding="{Binding Path=AccountNo}" />
                </GridView>
            </ListView.View>
        </ListView>
    </Grid>
</Window>

所以结果将如下所示 enter image description here

如何使用Wpf将单个listview列与多个db表绑定

4 个答案: