Overloads Public Function ReadExtensions( _
   ByVal fileName As String, _
   ByVal pageNumber As Integer _
) As CodecsExtensionList

Dim instance As RasterCodecs
Dim fileName As String
Dim pageNumber As Integer
Dim value As CodecsExtensionList
 
value = instance.ReadExtensions(fileName, pageNumber)

public CodecsExtensionList ReadExtensions( 
   string fileName,
   int pageNumber
)

public:
CodecsExtensionList^ ReadExtensions( 
   String^ fileName,
   int pageNumber
) 

Private Sub ExtensionsExample(ByVal exifFileName As String)
      Dim codecs As RasterCodecs = New RasterCodecs()
      Dim stampFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Extension.bmp")
      Dim audioFileNameTemplate As String = Path.Combine(LEAD_VARS.ImagesDir, "Extension{0}.wav")

      ' Read the extensions from the file
      Console.WriteLine("Reading the extensions from the exif file")
      Dim extensionList As CodecsExtensionList = codecs.ReadExtensions(exifFileName, 1)
      If Not extensionList Is Nothing Then
         If (extensionList.Flags And CodecsExtensionListFlags.Stamp) = CodecsExtensionListFlags.Stamp Then
            Console.WriteLine("Stamp extension: Found, saving to {0}", stampFileName)
            Dim stampImage As RasterImage = extensionList.CreateStamp()
            codecs.Save(stampImage, stampFileName, RasterImageFormat.Bmp, 24)
            stampImage.Dispose()
         Else
            Console.WriteLine("Stamp extension: Not found")
         End If

         If (extensionList.Flags And CodecsExtensionListFlags.Audio) = CodecsExtensionListFlags.Audio Then
            Console.WriteLine("Audio extension: Found, saving ...")
            Dim audioData As RasterNativeBuffer
            Dim streamIndex As Integer = 0

            Do
               audioData = extensionList.GetAudioData(streamIndex)
               If audioData.Data <> IntPtr.Zero Then
                  Dim audioFileName As String = String.Format(audioFileNameTemplate, streamIndex)
                  Console.WriteLine("To {0}", audioFileName)
                  Using fs As FileStream = File.Create(audioFileName)
                     Dim data As Byte() = New Byte(CInt(audioData.Length) - 1) {}
                     Marshal.Copy(audioData.Data, data, 0, CInt(audioData.Length))
                     fs.Write(data, 0, CInt(audioData.Length))
                  End Using

                  streamIndex += 1
               End If
            Loop While audioData.Data <> IntPtr.Zero

            Console.WriteLine("{0} total audio streams found", streamIndex)
         Else
            Console.WriteLine("Audio extension: Not found")
         End If

         Dim extensions As CodecsExtension() = extensionList.GetExtensions()
         Console.WriteLine("Total number of extensions found in the file: {0}", extensions.Length)

         Dim i As Integer = 0
         Do While i < extensions.Length
            Dim extension As CodecsExtension = extensions(i)
            Console.WriteLine(" {0}. Name: {1}, Clsid: {2}, UCDefault: {3}, DatLength: {4}", i, extension.Name, extension.Clsid, extension.UCDefault, extension.DataLength)
            i += 1
         Loop

         extensionList.Dispose()
      Else
         Console.WriteLine("No extensions were found in the file")
      End If

      codecs.Dispose()
   End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

void ExtensionsExample(string exifFileName)
   {
      RasterCodecs codecs = new RasterCodecs();
      string stampFileName = Path.Combine(LEAD_VARS.ImagesDir, "Extension.bmp");
      string audioFileNameTemplate = Path.Combine(LEAD_VARS.ImagesDir, "Extension{0}.wav");

      // Read the extensions from the file
      Console.WriteLine("Reading the extensions from the exif file");
      CodecsExtensionList extensionList = codecs.ReadExtensions(exifFileName, 1);
      if(extensionList != null)
      {
         if((extensionList.Flags & CodecsExtensionListFlags.Stamp) == CodecsExtensionListFlags.Stamp)
         {
            Console.WriteLine("Stamp extension: Found, saving to {0}", stampFileName);
            RasterImage stampImage = extensionList.CreateStamp();
            codecs.Save(stampImage, stampFileName, RasterImageFormat.Bmp, 24);
            stampImage.Dispose();
         }
         else
            Console.WriteLine("Stamp extension: Not found");

         if((extensionList.Flags & CodecsExtensionListFlags.Audio) == CodecsExtensionListFlags.Audio)
         {
            Console.WriteLine("Audio extension: Found, saving ...");
            RasterNativeBuffer audioData;
            int streamIndex = 0;

            do
            {
               audioData = extensionList.GetAudioData(streamIndex);
               if(audioData.Data != IntPtr.Zero)
               {
                  string audioFileName = string.Format(audioFileNameTemplate, streamIndex);
                  Console.WriteLine("To {0}", audioFileName);
                  using(FileStream fs = File.Create(audioFileName))
                  {
                     byte[] data = new byte[audioData.Length];
                     Marshal.Copy(audioData.Data, data, 0, (int)audioData.Length);
                     fs.Write(data, 0, (int)audioData.Length);
                  }

                  streamIndex++;
               }
            }
            while(audioData.Data != IntPtr.Zero);

            Console.WriteLine("{0} total audio streams found", streamIndex);
         }
         else
            Console.WriteLine("Audio extension: Not found");

         CodecsExtension[] extensions = extensionList.GetExtensions();
         Console.WriteLine("Total number of extensions found in the file: {0}", extensions.Length);

         for(int i = 0; i < extensions.Length; i++)
         {
            CodecsExtension extension = extensions[i];
            Console.WriteLine(" {0}. Name: {1}, Clsid: {2}, UCDefault: {3}, DatLength: {4}",
               i, extension.Name, extension.Clsid, extension.UCDefault, extension.DataLength);
         }

         extensionList.Dispose();
      }
      else
         Console.WriteLine("No extensions were found in the file");

      codecs.Dispose();
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}