- stream
- A System.IO.Stream containing the input image data.
- pageNumber
- 1-based index of the page from which to read the comments.
Visual Basic (Declaration) | |
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Overloads Public Function ReadComments( _ ByVal stream As Stream, _ ByVal pageNumber As Integer _ ) As RasterCollection(Of RasterCommentMetadata) |
Visual Basic (Usage) | ![]() |
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Dim instance As RasterCodecs Dim stream As Stream Dim pageNumber As Integer Dim value As RasterCollection(Of RasterCommentMetadata) value = instance.ReadComments(stream, pageNumber) |
C# | |
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public RasterCollection<RasterCommentMetadata> ReadComments( Stream stream, int pageNumber ) |
C++/CLI | |
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public: RasterCollection<RasterCommentMetadata^>^ ReadComments( Stream^ stream, int pageNumber ) |
Parameters
- stream
- A System.IO.Stream containing the input image data.
- pageNumber
- 1-based index of the page from which to read the comments.
Return Value
A collection of Leadtools.RasterTagMetadata containing all the comment fields information found in the file. If the file does not contain any comments, an empty collection will be returned. If the file format does not support comment fields, an exception will be thrown.Some file formats can contain comments, and some cannot, and each file format has its own set of comment types. When you save a file, the comments in the Leadtools.RasterImage object can be saved in the file. The index into the array (specified using a constant) determines the type of comment.
To read a specific comment field stored in a file, use ReadComment(String,Int32,RasterCommentMetadataType).
This method will throw an exception if the file format does not support comments fields. To check if a file format supports comment fields, use RasterCodecs.CommentsSupported. You can also automatically load all the comment fields stored in a file during a load operation by setting the CodecsLoadOptions.Comments property to true. The comment fields data will be stored in the result image RasterImage.Comments collection.
To load all the comments stored in a disk file, use RasterCodecs.ReadComments.
Target Platforms: Silverlight, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)
Reference
RasterCodecs ClassRasterCodecs Members
Overload List
CommentsSupported Method
ReadComment(String,Int32,RasterCommentMetadataType) Method
TagsSupported Method
GeoKeysSupported Method
Comments Property
RasterImage.Comments
Working with Markers
Implementing TIFF Comments and Tags
TIFF File Comments
Implementing GeoKeys (GeoTIFF tags)
Leadtools.RasterCommentMetadataType