c# - 通过C#代码创建DataGridTemplateColumn

Question

我有一个我创建的动态数据网格。我正在通过代码隐藏为其创建每一列。我在不编辑时想在文本 block 中显示但在编辑时作为组合框显示的列有问题。我有一个 ObservableCollection 交易。每个交易都有一个称为“帐户”的类型。这是我目前所拥有的:

    private DataGridTemplateColumn GetAccountColumn()
    {
        // Create The Column
        DataGridTemplateColumn accountColumn = new DataGridTemplateColumn();
        accountColumn.Header = "Account";

        Binding bind = new Binding("Account");
        bind.Mode = BindingMode.TwoWay;

        // Create the TextBlock
        FrameworkElementFactory textFactory = new FrameworkElementFactory(typeof(TextBlock));
        textFactory.SetBinding(TextBlock.TextProperty, bind);
        DataTemplate textTemplate = new DataTemplate();
        textTemplate.VisualTree = textFactory;

        // Create the ComboBox
        bind.Mode = BindingMode.OneWay;
        FrameworkElementFactory comboFactory = new FrameworkElementFactory(typeof(ComboBox));
        comboFactory.SetValue(ComboBox.DataContextProperty, this.Transactions);
        comboFactory.SetValue(ComboBox.IsTextSearchEnabledProperty, true);
        comboFactory.SetBinding(ComboBox.ItemsSourceProperty, bind);

        DataTemplate comboTemplate = new DataTemplate();
        comboTemplate.VisualTree = comboFactory;

        // Set the Templates to the Column
        accountColumn.CellTemplate = textTemplate;
        accountColumn.CellEditingTemplate = comboTemplate;

        return accountColumn;
    }

值显示在 TextBlock 中。但是，在组合框中，我只能让每个项目显示一个字符。例如，这里是文本 block :

但是当我单击编辑并进入组合框时，显示如下:

有人可以帮助我正确显示组合框中的项目吗？此外，当我从组合框中选择某些内容时，文本 block 不会更新为我选择的项目。

更新:

这是我目前的专栏。 ComboBox 中的项目正在正确显示。 The issue now is that when a new item is selected, the text in the TextBlock isn't updated with the new item.

    private DataGridTemplateColumn GetAccountColumn()
    {
        // Create The Column
        DataGridTemplateColumn accountColumn = new DataGridTemplateColumn();
        accountColumn.Header = "Account";

        Binding bind = new Binding("Account");
        bind.Mode = BindingMode.OneWay;

        // Create the TextBlock
        FrameworkElementFactory textFactory = new FrameworkElementFactory(typeof(TextBlock));
        textFactory.SetBinding(TextBlock.TextProperty, bind);
        DataTemplate textTemplate = new DataTemplate();
        textTemplate.VisualTree = textFactory;

        // Create the ComboBox
        Binding comboBind = new Binding("Account");
        comboBind.Mode = BindingMode.OneWay;

        FrameworkElementFactory comboFactory = new FrameworkElementFactory(typeof(ComboBox));
        comboFactory.SetValue(ComboBox.IsTextSearchEnabledProperty, true);
        comboFactory.SetValue(ComboBox.ItemsSourceProperty, this.Accounts);
        comboFactory.SetBinding(ComboBox.SelectedItemProperty, comboBind);

        DataTemplate comboTemplate = new DataTemplate();
        comboTemplate.VisualTree = comboFactory;

        // Set the Templates to the Column
        accountColumn.CellTemplate = textTemplate;
        accountColumn.CellEditingTemplate = comboTemplate;

        return accountColumn;
    }

“帐户”属性在我的 MainWindow 类中声明如下:

public ObservableCollection<string> Accounts { get; set; }

    public MainWindow()
    {
        this.Types = new ObservableCollection<string>();
        this.Parents = new ObservableCollection<string>();
        this.Transactions = new ObservableCollection<Transaction>();
        this.Accounts = new ObservableCollection<string>();

        OpenDatabase();
        InitializeComponent();
    }

这是我的事务类:

public class Transaction
{
    private string date;
    private string number;
    private string account;

    public string Date
    {
        get { return date; }
        set { date = value; }
    }

    public string Number
    {
        get { return number; }
        set { number = value; }
    }

    public string Account
    {
        get { return account; }
        set { account = value; }
    }
}

Answer 1

您将 ItemsSource 绑定(bind)到所选值，一个字符串，又名 char 数组，因此每个字符都用作一个项目，ItemsSource 绑定(bind)大概应该针对其他一些可以从中选择值的集合。