RenderOptions.GetCacheInvalidationThresholdMinimum(DependencyObject) 方法
定义
重要
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返回指定的依赖对象的 CacheInvalidationThresholdMinimum 附加属性值。
public:
static double GetCacheInvalidationThresholdMinimum(System::Windows::DependencyObject ^ target);[System.Windows.AttachedPropertyBrowsableForType(typeof(System.Windows.Media.TileBrush))]
public static double GetCacheInvalidationThresholdMinimum (System.Windows.DependencyObject target);[<System.Windows.AttachedPropertyBrowsableForType(typeof(System.Windows.Media.TileBrush))>]
static member GetCacheInvalidationThresholdMinimum : System.Windows.DependencyObject -> doublePublic Shared Function GetCacheInvalidationThresholdMinimum (target As DependencyObject) As Double参数
- target
- DependencyObject
要从中检索 CacheInvalidationThresholdMinimum 附加属性值的依赖对象。
返回
CacheInvalidationThresholdMinimum 附加属性的当前值（位于指定的依赖对象上）。
- 属性
例外
指定的 target 为 null。
示例
以下示例演示如何检索 的 DrawingBrush缓存提示值。
// Get the caching hint option for the brush.
CachingHint cachingHint = RenderOptions.GetCachingHint(drawingBrush);
if (cachingHint == CachingHint.Cache)
{
// Get the minimum and maximum relative sizes for regenerating the tiled brush.
double minimum = RenderOptions.GetCacheInvalidationThresholdMinimum(drawingBrush);
double maximum = RenderOptions.GetCacheInvalidationThresholdMaximum(drawingBrush);
// Perform action based on cache values...
}
' Get the caching hint option for the brush.
Dim cachingHintOpt As CachingHint = RenderOptions.GetCachingHint(drawingBrush)
If cachingHintOpt = CachingHint.Cache Then
' Get the minimum and maximum relative sizes for regenerating the tiled brush.
Dim minimum As Double = RenderOptions.GetCacheInvalidationThresholdMinimum(drawingBrush)
Dim maximum As Double = RenderOptions.GetCacheInvalidationThresholdMaximum(drawingBrush)
' Perform action based on cache values...
End If
