LEADTOOLS Image File Support (Leadtools.Codecs assembly)

ReadTags(Stream,Int32) Method

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A System.IO.Stream containing the input image data.
1-based index of the page from which to read the tags.
Reads all the tags stored in a TIFF file.
Syntax
'Declaration
 
Public Overloads Function ReadTags( _
   ByVal stream As Stream, _
   ByVal pageNumber As Integer _
) As RasterCollection(Of RasterTagMetadata)
'Usage
 
Dim instance As RasterCodecs
Dim stream As Stream
Dim pageNumber As Integer
Dim value As RasterCollection(Of RasterTagMetadata)
 
value = instance.ReadTags(stream, pageNumber)
-(NSArray*)readTags:(LTLeadStream*)stream pageNumber:(unsigned int)pageNumber error:(NSError**)outError;
public RasterCollection<RasterTagMetadata> readTags(ILeadStream stream, int pageNumber)
 function Leadtools.Codecs.RasterCodecs.ReadTags(Stream,Int32)( 
   stream ,
   pageNumber 
)

Parameters

stream
A System.IO.Stream containing the input image data.
pageNumber
1-based index of the page from which to read the tags.

Return Value

A collection of Leadtools.RasterTagMetadata containing all the tags found in the file. If the file does not contain any tags, an empty collection will be returned. If the file format does not support tags, an exception will be thrown.
Remarks

To read a specific tag stored in a file, use ReadTag(String,Int32,Int32) and to enumerate all the tag ids (but not the data) stored in a file use EnumTags(String,Int32).

This method will throw an exception if the file format does not support tags. To determine whether a file format supports tags, use TagsSupported. You can also automatically load all the tags stored in a file during a load operation by setting the CodecsLoadOptions.Tags property to true. The tags data will be stored in the resulting image RasterImage.Tags collection.

To load all the tags stored in a disk file, use ReadTags(String,Int32).

Example
For an example, refer to ReadTags(String,Int32).
Requirements

Target Platforms

See Also

Reference

RasterCodecs Class
RasterCodecs Members
Overload List
TagsSupported Method
ReadTag(String,Int32,Int32) Method
EnumTags(String,Int32) Method
CommentsSupported Method
GeoKeysSupported Method
Tags Property
RasterImage.Tags
Working with Markers
Implementing TIFF Comments and Tags
TIFF File Comments
Implementing GeoKeys (GeoTIFF tags)
Leadtools.RasterCommentMetadataType

 

 


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