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ScaleFactor Property
See Also 
Leadtools.Windows.Controls Namespace > ImageBox Class : ScaleFactor Property



Gets or sets the zoom factor used to display the image. This is a dependency property. Supported in Silverlight, Windows Phone 7

Syntax

Visual Basic (Declaration) 
Public Property ScaleFactor As Double
Visual Basic (Usage)Copy Code
Dim instance As ImageBox
Dim value As Double
 
instance.ScaleFactor = value
 
value = instance.ScaleFactor
C# 
public double ScaleFactor {get; set;}
C++/CLI 
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

Example

Visual BasicCopy Code
Public Sub ImageBox_ScaleFactor(ByVal viewer As ImageBox)
    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
C#Copy Code
public void ImageBox_ScaleFactor(ImageBox viewer)
{
   viewer.ScaleFactor = viewer.ScaleFactor * 0.9f;
   string s = string.Format("HorizontalScaleFactor {0}, VerticalScaleFactor {1}", viewer.CurrentXScaleFactor, viewer.CurrentYScaleFactor);
   MessageBox.Show(s);
}
SilverlightCSharpCopy Code
public void ImageBox_ScaleFactor(ImageBox viewer)
{
   viewer.ScaleFactor = viewer.ScaleFactor * 0.9f;
   string s = string.Format("HorizontalScaleFactor {0}, VerticalScaleFactor {1}", viewer.CurrentXScaleFactor, viewer.CurrentYScaleFactor);
   MessageBox.Show(s);
}
SilverlightVBCopy Code
Public Sub ImageBox_ScaleFactor(ByVal viewer As ImageBox)
   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
XAMLCopy Code
<Window x:Class="WPFSamples.ImageBox" Height="600" Width="800" 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">
  <DockPanel>
    <Leadtools_Windows_Controls:ImageBox Name="theImage" Source="file:///c:\users\Public\Documents\LEADTOOLS Images\cannon.jpg" DockPanel.Dock="Bottom" HorizontalAlignment="Center" VerticalAlignment="Bottom" ScaleFactor=".5"></Leadtools_Windows_Controls:ImageBox>
  </DockPanel>
</Window>

Remarks

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.

Requirements

Target Platforms: Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family

See Also