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RenderOptions.GetCacheInvalidationThresholdMinimum(DependencyObject) 方法

  • 參考

定義

命名空間:
System.Windows.Media
組件:
PresentationCore.dll

傳回所指定相依性物件的 CacheInvalidationThresholdMinimum 附加屬性值。

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

參數

target
DependencyObject

要從中擷取 CacheInvalidationThresholdMinimum 附加屬性值的相依性物件。

傳回

Double

所指定相依性物件上 CacheInvalidationThresholdMinimum 附加屬性的目前值。

屬性
AttachedPropertyBrowsableForTypeAttribute

例外狀況

ArgumentNullException

指定的 target 為 null。

範例

下列範例示範如何擷取 的 DrawingBrush 快取提示值。

// 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

適用於

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