This example will show how to load an image using different bits per pixel and color order. Also, it will show how to load a single page from a multipage file. All loading operations load from a stream rather than from a file on disk.

Visual Basic

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Public Sub RasterImageViewerElement_Load1(ByVal viewer As RasterImageViewerElement)    Dim multiPageFileName As String = "C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\Eye.gif"    Dim fs As FileStream = File.OpenRead(multiPageFileName)    ' Load the first page    Dim first As Integer = 1    viewer.Load(fs, 0, CodecsLoadByteOrder.BgrOrGray, first)    Console.WriteLine("Loading pages {0}", first)    viewer.Image.Dispose()    ' Load the second page    first = 2    viewer.Load(fs, 0, CodecsLoadByteOrder.BgrOrGray, first)    Console.WriteLine("Loading pages {0}", first)    viewer.Image.Dispose() End Sub

C#

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public void RasterImageViewerElement_Load1(RasterImageViewerElement viewer)  {     string multiPageFileName = @"C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\Eye.gif";       FileStream fs = File.OpenRead(multiPageFileName);       // Load the first page     int first = 1;     viewer.Load(fs, 0, CodecsLoadByteOrder.BgrOrGray, first);     Console.WriteLine("Loading pages {0}", first);     viewer.Image.Dispose();       // Load the second page     first = 2;     viewer.Load(fs, 0, CodecsLoadByteOrder.BgrOrGray, first);     Console.WriteLine("Loading pages {0}", first);     viewer.Image.Dispose();  }

The file can be in any supported image file format and bits per pixel, whether compressed or uncompressed.

LEADTOOLS will attempt to load corrupted files, so you can see at least a portion of the image.

Support for 12- and 16-bit grayscale images is only available in the Document/Medical Imaging editions.

For supported formats, refer to Summary of All Supported Image File Formats.

LEADTOOLS loads all PDF files as Raster PDF uncompressed RasterImageFormat.RasPdf, regardless of the compression and color space used when saving the file.

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Vista, and Windows Server 2003 family

Reference