具有雙向綁定的DependencyProperty

Question

我有一個高度定制的Edit控件，該控件繼承了RichTextBox 。 我需要一種將Value綁定到此控件的方法，所以我注冊了一個新的DependencyProperty ，但是我很難像我需要的那樣對其進行編碼。

public static readonly DependencyProperty ValueProperty =
            DependencyProperty.Register("Value", typeof(string), typeof(XliffRichCellEditor),
            new PropertyMetadata(new PropertyChangedCallback(XliffRichCellEditor.OnValuePropertyChanged)));
public String Value
{
    get { return (String)this.GetValue(ValueProperty); }
    set { this.SetValue(ValueProperty, value); }
}

private static void OnValuePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
    // Need to change Document in  RichTextBox when Binding Source is changed
    // But also ignore if the change comes from RichTextBox which is only updating
    // the DependencyProperty. In this case Binding Source should be updated.
}

請幫忙。

Answer 1

use可以在Binding語句中使用UpdateSourceTrigger=Explicit並獲得對屬性更新的控制權。

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