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我在我的根ResourceDictionary中有以下内容。 Foreground = Red
部分工作,但自定义附加的依赖项属性不会被设置。Silverlight 4 - 如何在样式中设置自定义附加的依赖项属性?
我可以通过代码手动设置它,但我显然希望避免必须为每个文本框设置它。这在Silverlight中工作吗?我已经看到一些关于在WPF中完成它的帖子,而且我的代码看起来是正确的(对我来说)。
<Style TargetType="TextBox">
<Setter Property="controls:TextBoxContextMenu.HasContextMenu" Value="True" />
<Setter Property="Foreground" Value="Red" />
</Style>
/// <summary>
/// Gets the value of the HasContextMenu attached property for a specified TextBox.
/// </summary>
/// <param name="element">The TextBox from which the property value is read.</param>
/// <returns>The HasContextMenu property value for the TextBox.</returns>
public static bool GetHasContextMenu(TextBox element)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
return (bool)element.GetValue(HasContextMenuProperty);
}
/// <summary>
/// Sets the value of the HasContextMenu attached property to a specified TextBox.
/// </summary>
/// <param name="element">The TextBox to which the attached property is written.</param>
/// <param name="value">The needed HasContextMenu value.</param>
public static void SetHasContextMenu(TextBox element, bool value)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
element.SetValue(HasContextMenuProperty, value);
}
/// <summary>
/// Identifies the HasContextMenu dependency property.
/// </summary>
public static readonly DependencyProperty HasContextMenuProperty =
DependencyProperty.RegisterAttached(
"HasContextMenu",
typeof(bool),
typeof(TextBox),
new PropertyMetadata(false, OnHasContextMenuPropertyChanged));
/// <summary>
/// HasContextMenuProperty property changed handler.
/// </summary>
/// <param name="d">TextBoxContextMenu that changed its HasContextMenu.</param>
/// <param name="e">Event arguments.</param>
private static void OnHasContextMenuPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
// code
}
我要补充的是,附加依赖属性是一类由RadContextMenu
继承,这是定义的DependencyObject
(我一直在阅读和某个地方,这是建议,如果附加属性是这可不行定义在这样的一类,但这似乎很奇怪)