Public Overloads Function ReadMarkers( _
   ByVal stream As Stream _
) As RasterCollection(Of RasterMarkerMetadata)

Visual Basic (Usage)	Copy Code
Dim instance As RasterCodecs Dim stream As Stream Dim value As RasterCollection(Of RasterMarkerMetadata)   value = instance.ReadMarkers(stream)

public RasterCollection<RasterMarkerMetadata> ReadMarkers( 
   Stream stream
)

public:
RasterCollection<RasterMarkerMetadata> ReadMarkers( 
   Stream^ stream
) 

Parameters

stream

A Stream containing the input file image data.

Return Value

This example will read all the markers from a stream that contains an EXIF file data

Visual Basic

Copy Code

Private Sub ReadMarkersFromStreamExample(ByVal theStream As Stream)    RasterCodecs.Startup()    Dim codecs As RasterCodecs = New RasterCodecs()    Dim markers As RasterCollection(Of RasterMarkerMetadata) = codecs.ReadMarkers(theStream)    Console.WriteLine("{0} markers found with the following ID's:", markers.Count)    For Each marker As RasterMarkerMetadata In markers       Console.WriteLine(marker.Id)    Next marker    codecs.Dispose()    RasterCodecs.Shutdown() End Sub

C#

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void ReadMarkersFromStreamExample(Stream theStream)  {     RasterCodecs.Startup();     RasterCodecs codecs = new RasterCodecs();     RasterCollection<RasterMarkerMetadata> markers = codecs.ReadMarkers(theStream);     Console.WriteLine("{0} markers found with the following ID's:", markers.Count);     foreach(RasterMarkerMetadata marker in markers)        Console.WriteLine(marker.Id);       codecs.Dispose();     RasterCodecs.Shutdown();  }

This method reads all the metadata markers from a file, and returns a collection of the markers.

For Exif files, this metadata collection will contain all the Exif and GPS comments, stored in APP1. It will also contain the audio information stored in APP2.

If the file contains no marker, then this method will return an empty collection.

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

Reference