Render(RectangleF,Single) Method (PdfPage)

In This Topic

Renders specified rectangle of PDF page with specified scale.

Syntax

Visual Basic
C#
Managed Extensions for C++
C++/CLI

'Declaration

Public Overloads Function Render( _
   ByVal rectRectangle on PDF page.
 As System.Drawing.RectangleF, _
   ByVal scaleScale factor.
 As Single _
) As Vintasoft.Imaging.VintasoftImage

public Vintasoft.Imaging.VintasoftImage Render(
   System.Drawing.RectangleF rect, 
   float scale
)

public: Vintasoft.Imaging.VintasoftImage* Render(
   System.Drawing.RectangleF* rect, 
   float scale
)

public:
Vintasoft.Imaging.VintasoftImage^ Render(
   System.Drawing.RectangleF^ rect, 
   float scale
)

Parameters

rect: Rectangle on PDF page.
scale: Scale factor.

Return Value

Rendered image of this page.

Example

Here is an example that shows how to render a PDF page region with 600x600 dpi resolution:

VB.NET


''' <summary>
''' Gets region of PDF page with 600x600 resolution.
''' </summary>
''' <param name="page">The page of PDF document.</param>
''' <param name="region">The region of page.</param>
Public Shared Function GetImage600dpiRegion(page As Vintasoft.Imaging.Pdf.Tree.PdfPage, region As System.Drawing.RectangleF) As Vintasoft.Imaging.VintasoftImage
    ' get the rendering settings of PDF document
    Dim renderingSettings As Vintasoft.Imaging.Codecs.Decoders.PdfRenderingSettings = page.Document.RenderingSettings
    ' save previous resolution of rendering settings
    Dim prevResolution As Vintasoft.Imaging.Resolution = renderingSettings.Resolution
    ' set new resolution for image rendering
    renderingSettings.Resolution = New Vintasoft.Imaging.Resolution(600, 600)

    ' render region of PDF page
    Dim image As Vintasoft.Imaging.VintasoftImage = page.Render(region, 1F)

    ' restore resolution of rendering settings
    renderingSettings.Resolution = prevResolution

    ' return the image
    Return image
End Function


/// <summary>
/// Gets region of PDF page with 600x600 resolution.
/// </summary>
/// <param name="page">The page of PDF document.</param>
/// <param name="region">The region of page.</param>
public static Vintasoft.Imaging.VintasoftImage GetImage600dpiRegion(
    Vintasoft.Imaging.Pdf.Tree.PdfPage page, System.Drawing.RectangleF region)
{
    // get the rendering settings of PDF document
    Vintasoft.Imaging.Codecs.Decoders.PdfRenderingSettings renderingSettings = page.Document.RenderingSettings;
    // save previous resolution of rendering settings
    Vintasoft.Imaging.Resolution prevResolution = renderingSettings.Resolution;
    // set new resolution for image rendering
    renderingSettings.Resolution = new Vintasoft.Imaging.Resolution(600, 600);

    // render region of PDF page
    Vintasoft.Imaging.VintasoftImage image = page.Render(region, 1.0f);

    // restore resolution of rendering settings
    renderingSettings.Resolution = prevResolution;

    // return the image
    return image;
}

Requirements

Target Platforms: .NET9; .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5

Reference

PdfPage Class
PdfPage Members

Overload List

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