和/或如何在我的控件上定义一个DependencyProperty来分离AffectsMeasure？
编辑：哦,刚看到这个 – 我是否必须在propertychangedhandler中调用InvalidateMeasure？
解决方法
抱歉.对于UWP
AffectsMeasure不受支持.对于Framework 3,它可以工作.对于默认的UWP绑定,我正在使用CodeSnipped功能.通过事件处理,您可以采取透明行动.对于我的模型,我的UWP codeSnippet的结果如下所示：
#region IsSelected
public static readonly DependencyProperty IsSelectedProperty =
DependencyProperty.Register("IsSelected",typeof(bool),typeof(PositionModel),new PropertyMetadata((bool)false,new PropertyChangedCallback(OnIsSelectedChanged)));
public bool IsSelected
{
get { return (bool)GetValue(IsSelectedProperty); }
set { SetValue(IsSelectedProperty,value); }
}
private static void OnIsSelectedChanged(DependencyObject d,DependencyPropertyChangedEventArgs e)
{
PositionModel target = (PositionModel)d;
bool oldIsSelected = (bool)e.OldValue;
bool newIsSelected = target.IsSelected;
target.OnIsSelectedChanged(oldIsSelected,newIsSelected);
}
protected virtual void OnIsSelectedChanged(bool oldIsSelected,bool newIsSelected)
{
// Do what your need in your property changed event
// In my case,I just raise the PropertyChanged for PropertyChangedEventHandler
// RaisePropertyChanged(nameof(IsSelected));
}
#endregion
XAML：
<Rectangle Fill="Black" Visibility="{x:Bind IsSelected,Mode=OneWay,Converter={StaticResource BoolToVis}}" />
Windows 10,商店,VS 2017,Microsoft.NETCore.UniversalWindowsPlatform版本5.2.3
