FixedPage.SetTop(UIElement, Double) 方法

  • 參考

定義

命名空間:
System.Windows.Documents
組件:
PresentationFramework.dll

設定項目頂端與其父代 Canvas 頂端之間的距離。

public:
 static void SetTop(System::Windows::UIElement ^ element, double length);
public static void SetTop (System.Windows.UIElement element, double length);
static member SetTop : System.Windows.UIElement * double -> unit
Public Shared Sub SetTop (element As UIElement, length As Double)

參數

element
UIElement

要設定頂端位移的項目。

length
Double

項目頂端與其父代畫布頂端之間的新距離。

範例

下列範例示範 如何使用 SetTop 方法。

// --------------------- CreateFifthPageContent -----------------------
/// <summary>
///   Creates the content for the fifth fixed page.</summary>
/// <returns>
///   The page content for the fifth fixed page.</returns>
private PageContent CreateFifthPageContent()
{
    PageContent pageContent = new PageContent();
    FixedPage   fixedPage   = new FixedPage();
    UIElement   visual      = CreateThirdVisual(false);

    FixedPage.SetLeft(visual, 0);
    FixedPage.SetTop(visual, 0);

    double pageWidth = 96 * 8.5;
    double pageHeight = 96 * 11;

    fixedPage.Width = pageWidth;
    fixedPage.Height = pageHeight;

    fixedPage.Children.Add((UIElement)visual);

    Size sz = new Size(8.5 * 96, 11 * 96);
    fixedPage.Measure(sz);
    fixedPage.Arrange(new Rect(new Point(), sz));
    fixedPage.UpdateLayout();

    ((IAddChild)pageContent).AddChild(fixedPage);
    return pageContent;
}// end:CreateFifthPageContent()

' --------------------- CreateFifthPageContent -----------------------
''' <summary>
'''   Creates the content for the fifth fixed page.</summary>
''' <returns>
'''   The page content for the fifth fixed page.</returns>
Private Function CreateFifthPageContent() As PageContent
    Dim pageContent As New PageContent()
    Dim fixedPage As New FixedPage()
    Dim visual As UIElement = CreateThirdVisual(False)

    FixedPage.SetLeft(visual, 0)
    FixedPage.SetTop(visual, 0)

    Dim pageWidth As Double = 96 * 8.5
    Dim pageHeight As Double = 96 * 11

    fixedPage.Width = pageWidth
    fixedPage.Height = pageHeight

    fixedPage.Children.Add(CType(visual, UIElement))

    Dim sz As New Size(8.5 * 96, 11 * 96)
    fixedPage.Measure(sz)
    fixedPage.Arrange(New Rect(New Point(), sz))
    fixedPage.UpdateLayout()

    CType(pageContent, IAddChild).AddChild(fixedPage)
    Return pageContent
End Function ' end:CreateFifthPageContent()

備註

子項目的上移不會影響父畫布的大小。

如果在同一個元素上同時指定了上移和下位移，則最上層位移會優先。

將頂端位移設定為百分比時，百分比值會以父畫布的大小為基礎。

適用於

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