ScaleFactor Property (ImageViewer)

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public double ScaleFactor {get; set;}

'Declaration
 
Public Property ScaleFactor As Double

'Usage
 
Dim instance As ImageViewer
Dim value As Double
 
instance.ScaleFactor = value
 
value = instance.ScaleFactor

public double ScaleFactor {get; set;}

 get_ScaleFactor();
 set_ScaleFactor(value);

public:
property double ScaleFactor {
   double get();
   void set (    double value);
}

Property Value

The zoom factor used to display the image. A value of 1.0 means 100 percent, a value of 1.5 means 150 percent, a value of 2.0 = 200 percent and so on. Default value is 1.0

When the value of SizeMode is set to SizeMode.Normal, you can use the ScaleFactor property to zoom in and out of the image. Values greater than 1.0 will zoom the image in, values less than 1.0 will zoom the image out.

When the value of SizeMode is set to anything other than SizeMode.Normal, the ScaleFactor will be set back to the default value of 1.0. To get the current horizontal and vertical scale factors used to achieve current size mode (for example, fit the image into the control), use the CurrentXScaleFactor and CurrentYScaleFactor properties. Changing the scale factor when the SizeMode is set to anything other than SizeMode.Normal will cause SizeMode to be set back to SizeMode.Normal.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Public Sub ImageViewer_ScaleFactor(ByVal viewer As ImageViewer)
    viewer.ScaleFactor = viewer.ScaleFactor * 0.9F
    Dim s As String = String.Format("HorizontalScaleFactor {0}, VerticalScaleFactor {1}", viewer.CurrentXScaleFactor, viewer.CurrentYScaleFactor)
    MessageBox.Show(s)
End Sub

public void ImageViewer_ScaleFactor(ImageViewer viewer)
{
   viewer.ScaleFactor = viewer.ScaleFactor * 0.9f;
   string s = string.Format("HorizontalScaleFactor {0}, VerticalScaleFactor {1}", viewer.CurrentXScaleFactor, viewer.CurrentYScaleFactor);
   MessageBox.Show(s);
}

public void ImageViewer_ScaleFactor(ImageViewer viewer)
{
   viewer.ScaleFactor = viewer.ScaleFactor * 0.9f;
   string s = string.Format("HorizontalScaleFactor {0}, VerticalScaleFactor {1}", viewer.CurrentXScaleFactor, viewer.CurrentYScaleFactor);
   MessageBox.Show(s);
}

Public Sub ImageViewer_ScaleFactor(ByVal viewer As ImageViewer)
   viewer.ScaleFactor = viewer.ScaleFactor * 0.9F
   Dim s As String = String.Format("HorizontalScaleFactor {0}, VerticalScaleFactor {1}", viewer.CurrentXScaleFactor, viewer.CurrentYScaleFactor)
   MessageBox.Show(s)
End Sub

<Window x:Class="WPFSamples.ImageViewer"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  xmlns:Leadtools_Windows_Controls="clr-namespace:Leadtools.Windows.Controls;assembly=Leadtools.Windows.Controls"
  Height="600" Width="800">
  <DockPanel>
    <Leadtools_Windows_Controls:ImageViewer
      Name="theViewer"
      Source="file:///c:\users\Public\Documents\LEADTOOLS Images\cannon.jpg"
      DockPanel.Dock= "Bottom"
      HorizontalAlignment="Center" VerticalAlignment="Center"
      ScaleFactor=".9"/>
  </DockPanel>
  <Window.Title>
    InteractiveZoomTo Sample : "ScaleFactor =0.9"
  </Window.Title>

</Window>

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

ImageViewer Class
ImageViewer Members