Export (0) Print
Expand All

FlowDocumentReader.ZoomIncrement Property

Gets or sets the zoom increment.

Namespace:  System.Windows.Controls
Assembly:  PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation

Public Property ZoomIncrement As Double
<object ZoomIncrement="double" .../>

Property Value

Type: System.Double
The current zoom increment, interpreted as a percentage. The default is 10.0 (zoom increment of 10%).

Identifier field


Metadata properties set to true


The zoom increment is the percentage by which the Zoom level is increased or decreased when the IncreaseZoom or DecreaseZoom commands are executed, respectively.

Default FlowDocumentReader user interface (UI) includes a zoom control that provides buttons for increasing or decreasing the zoom, as well as a slider for adjusting the zoom level. The following figure shows the zoom controls on a FlowDocumentReader with default UI.

FlowDocumentReader content zoom

The following example shows how to set the ZoomIncrement attribute.

  MinZoom="50" MaxZoom="1000"
  Zoom="120" ZoomIncrement="5"
      Flow content...

The following example shows how to set the ZoomIncrement property programmatically.

			Dim flowDocRdr As New FlowDocumentReader()

			' Enable find...
			flowDocRdr.IsFindEnabled = True
			' Enable printing...
			flowDocRdr.IsPrintEnabled = True
			' Set zoom between 50% and 1000%.
			flowDocRdr.MinZoom = 50
			flowDocRdr.MaxZoom = 1000
			' Set the zoom increment to 5%.
			flowDocRdr.ZoomIncrement = 5
			' Set the initial zoom to 120%.
			flowDocRdr.Zoom = 120

			Dim flowDoc As New FlowDocument(New Paragraph(New Run("Flow content...")))
			flowDocRdr.Document = flowDoc

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Community Additions

© 2015 Microsoft