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RenderOptions.GetCacheInvalidationThresholdMinimum(DependencyObject) 方法

  • 参考

定义

命名空间:
System.Windows.Media
程序集:
PresentationCore.dll

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 -> double
Public 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

Double

CacheInvalidationThresholdMinimum 附加属性的当前值（位于指定的依赖对象上）。

属性
AttachedPropertyBrowsableForTypeAttribute

例外

ArgumentNullException

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

适用于

另请参阅