FixedPage.GetTop(UIElement) 方法

  • 参考

定义

命名空间:
System.Windows.Documents
程序集:
PresentationFramework.dll

返回某元素的顶部与其父 Canvas 的顶部之间的距离。

public:
 static double GetTop(System::Windows::UIElement ^ element);
[System.ComponentModel.TypeConverter("System.Windows.LengthConverter, PresentationFramework, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, Custom=null")]
[System.Windows.AttachedPropertyBrowsableForChildren]
public static double GetTop (System.Windows.UIElement element);
[System.Windows.AttachedPropertyBrowsableForChildren]
[System.ComponentModel.TypeConverter("System.Windows.LengthConverter, PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, Custom=null")]
public static double GetTop (System.Windows.UIElement element);
[<System.ComponentModel.TypeConverter("System.Windows.LengthConverter, PresentationFramework, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, Custom=null")>]
[<System.Windows.AttachedPropertyBrowsableForChildren>]
static member GetTop : System.Windows.UIElement -> double
[<System.Windows.AttachedPropertyBrowsableForChildren>]
[<System.ComponentModel.TypeConverter("System.Windows.LengthConverter, PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, Custom=null")>]
static member GetTop : System.Windows.UIElement -> double
Public Shared Function GetTop (element As UIElement) As Double

参数

element
UIElement

要从中获取顶部偏移量的元素。

返回

Double

某元素的顶部与其父画布的顶部之间的距离。

属性
TypeConverterAttribute AttachedPropertyBrowsableForChildrenAttribute

注解

如果尚未设置顶部偏移量， GetTop 则 NaN返回 。

适用于

另请参阅