PdfViewer.CreateBitmap(Int32, Int32) Method

Exports a PDF page to a bitmap image.

Namespace: DevExpress.XtraPdfViewer

Assembly: DevExpress.XtraPdfViewer.v23.2.dll

NuGet Package: DevExpress.Win.PdfViewer

Declaration

C#

public Bitmap CreateBitmap(
    int pageNumber,
    int largestEdgeLength
)

VB.NET

Public Function CreateBitmap(
    pageNumber As Integer,
    largestEdgeLength As Integer
) As Bitmap

Parameters

Name	Type	Description
pageNumber	Int32	An integer value, specifying the page number.
largestEdgeLength	Int32	An integer value, specifying the length of the image’s largest dimension.

Returns

Type	Description
Bitmap	A Bitmap object.

Remarks

The CreateBitmap method has two parameters: the converted page’s number and the length of the image’s largest dimension in pixels. The largestEdgeLength parameter determines the output image height for pages in the portrait orientation and width - for landscape pages.

You can reduce the output image size and memory consumption if you pass a smaller largestEdgeLength value to the CreateBitmap method. The document page is not clipped when it is converted to bitmap. The page is proportionally scaled so that the largest edge of the converted bitmap is equal to the largestEdgeLength value.

The code sample below exports pages to bitmap images.

C#

int largestEdgeLength = 1000;

pdfViewer1.LoadDocument("Document.pdf");
for (int i = 1; i <= pdfViewer1.PageCount; i++)
{
    // Export all pages to bitmaps
    Bitmap image = pdfViewer1.CreateBitmap(i, largestEdgeLength);

    // Save the resulting images
    image.Save("..\\..\\MyBitmap" + i + ".bmp");
}

VB.NET

Dim largestEdgeLength As Integer = 1000
pdfViewer1.LoadDocument("Document.pdf")

For i As Integer = 1 To pdfViewer1.PageCount

    'Export all pages to bitmaps
    Dim image As Bitmap = pdfViewer1.CreateBitmap(i, largestEdgeLength)

    ' Save the resulting images
    image.Save("..\..\MyBitmap" & i & ".bmp")
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