Question

我得到一个例外，告诉我“Binding”不能在'WinFormsWrapper'类型的'InitialStartDateTime'属性上设置。'Binding'只能在DependencyObject的DependencyProperty上设置。“但我的属性是依赖属性，你可以在这里看到，对吧？

public class WinFormsWrapper : WindowsFormsHost
{       
    /// <summary>
    /// The control element
    /// </summary>
    private static EtDateTimeRange control = new EtDateTimeRange();     

    /// <summary>
    /// The dependency property for InitialStartDateTime
    /// </summary>
    public static readonly DependencyProperty InitialStartDateTimeProperty = DependencyProperty.Register("StartDateTime", typeof(DateTime), typeof(WinFormsWrapper), new FrameworkPropertyMetadata(control.InitialStartDateTime, new PropertyChangedCallback(InitialStartDateTime_Changed)));

    /// <summary>
    /// Handles the event
    /// </summary>
    /// <param name="sender">The sender</param>
    /// <param name="e">The arguments</param>
    private static void InitialStartDateTime_Changed(DependencyObject sender, DependencyPropertyChangedEventArgs e)
    {
        control.InitialStartDateTime = (DateTime)e.NewValue;
    }

    /// <summary>
    /// Gets, sets the InitialStartDateTime
    /// </summary>
    public DateTime InitialStartDateTime
    {
        get { return (DateTime)GetValue(InitialStartDateTimeProperty); }
        set { SetValue(InitialStartDateTimeProperty, value); }
    }

    /// <summary>
    /// The dependency property for InitialEndDateTime
    /// </summary>
    public static readonly DependencyProperty InitialEndDateTimeProperty = DependencyProperty.Register("EndDateTime", typeof(DateTime), typeof(WinFormsWrapper), new FrameworkPropertyMetadata(control.InitialEndDateTime, new PropertyChangedCallback(InitialEndDateTime_Changed)));

    /// <summary>
    /// Handles the event
    /// </summary>
    /// <param name="sender">The sender</param>
    /// <param name="e">The arguments</param>
    private static void InitialEndDateTime_Changed(DependencyObject sender, DependencyPropertyChangedEventArgs e)
    {
        //_control.InitialEndDateTime = (DateTime)e.NewValue;
    }

    /// <summary>
    /// Gets, sets the InitialEndDateTime
    /// </summary>
    public DateTime InitialEndDateTime
    {
        get { return (DateTime)GetValue(InitialEndDateTimeProperty); }
        set { SetValue(InitialEndDateTimeProperty, value); }
    }
}

这是我的xaml：

<controls:WinFormsWrapper InitialStartDateTime="{Binding StartDateTime}" InitialEndDateTime="{Binding EndDateTime}" />

提前谢谢！

编辑：非常感谢，它现在正在运行，但它仍然没有显示我的控件，任何想法为什么？

Answer 1

您在DependencyProperty创建中使用了错误的属性。

public static readonly DependencyProperty InitialEndDateTimeProperty = DependencyProperty.Register("EndDateTime", typeof(DateTime), typeof(WinFormsWrapper), new FrameworkPropertyMetadata(control.InitialEndDateTime, new PropertyChangedCallback(InitialEndDateTime_Changed)));

在注册部分，它应该是InitialEndDateTime而不是EndDateTime。

Answer 2

 DependencyProperty.Register("StartDateTime",

你必须命名

 DependencyProperty.Register("InitialStartDateTime",

：）

与EndDateTime相同的问题

我希望能解决你的问题

对依赖项属性的数据绑定问题

2 个答案: