ScrollChangedEventArgs.ViewportHeightChange Özellik

Tanım

Ad Alanı:

System.Windows.Controls

Bütünleştirilmiş Kod:

PresentationFramework.dll

bir için görünüm penceresi yüksekliğinin değerindeki değişikliği gösteren bir ScrollViewerdeğer alır.

public:
 property double ViewportHeightChange { double get(); };

public double ViewportHeightChange { get; }

member this.ViewportHeightChange : double

Public ReadOnly Property ViewportHeightChange As Double

Özellik Değeri

Double

dikey Double görünüm penceresi yüksekliğindeki değişikliği temsil eden bir ScrollViewer.

Örnekler

Aşağıdaki örnekte özelliğin değerinin nasıl alınacakları ViewportHeightChange gösterilmektedir.

private void sChanged(object sender, ScrollChangedEventArgs e)
{
    if (svrContent.CanContentScroll == true)
    {
        tBlock1.Foreground = System.Windows.Media.Brushes.Red;
        tBlock1.Text = "ScrollChangedEvent just Occurred";
        tBlock2.Text = "ExtentHeight is now " + e.ExtentHeight.ToString();
        tBlock3.Text = "ExtentWidth is now " + e.ExtentWidth.ToString();
        tBlock4.Text = "ExtentHeightChange was " + e.ExtentHeightChange.ToString();
        tBlock5.Text = "ExtentWidthChange was " + e.ExtentWidthChange.ToString();
        tBlock6.Text = "HorizontalOffset is now " + e.HorizontalOffset.ToString();
        tBlock7.Text = "VerticalOffset is now " + e.VerticalOffset.ToString();
        tBlock8.Text = "HorizontalChange was " + e.HorizontalChange.ToString();
        tBlock9.Text = "VerticalChange was " + e.VerticalChange.ToString();
        tBlock10.Text = "ViewportHeight is now " + e.ViewportHeight.ToString();
        tBlock11.Text = "ViewportWidth is now " + e.ViewportWidth.ToString();
        tBlock12.Text = "ViewportHeightChange was " + e.ViewportHeightChange.ToString();
        tBlock13.Text = "ViewportWidthChange was " + e.ViewportWidthChange.ToString();
    }
    else
    {
        tBlock1.Text = "";
    }

Private Sub sChanged(ByVal sender As Object, ByVal args As ScrollChangedEventArgs)


    If (sv1.CanContentScroll = True) Then
        tBlock1.Foreground = System.Windows.Media.Brushes.Red
        tBlock1.Text = "ScrollChangedEvent just Occurred"
        tBlock3.Text = "ExtentWidth is now " + args.ExtentWidth.ToString()
        tBlock4.Text = "ExtentHeightChange was " + args.ExtentHeightChange.ToString()
        tBlock5.Text = "ExtentWidthChange was " + args.ExtentWidthChange.ToString()
        tBlock6.Text = "HorizontalOffset is now " + args.HorizontalOffset.ToString()
        tBlock7.Text = "VerticalOffset is now " + args.VerticalOffset.ToString()
        tBlock8.Text = "HorizontalChange was " + args.HorizontalChange.ToString()
        tBlock9.Text = "VerticalChange was " + args.VerticalChange.ToString()
        tBlock10.Text = "ViewportHeight is now " + args.ViewportHeight.ToString()
        tBlock11.Text = "ViewportWidth is now " + args.ViewportWidth.ToString()
        tBlock12.Text = "ViewportHeightChange was " + args.ViewportHeightChange.ToString()
        tBlock13.Text = "ViewportWidthChange was " + args.ViewportWidthChange.ToString()

    Else
        tBlock1.Text = ""

    End If