ReadTag(String,Int32,Int32) Method

public RasterTagMetadata ReadTag( 
   string fileName,
   int pageNumber,
   int id
)

'Declaration
 

Public Overloads Function ReadTag( _
   ByVal fileName As String, _
   ByVal pageNumber As Integer, _
   ByVal id As Integer _
) As RasterTagMetadata

'Usage
 

Dim instance As RasterCodecs
Dim fileName As String
Dim pageNumber As Integer
Dim id As Integer
Dim value As RasterTagMetadata
 
value = instance.ReadTag(fileName, pageNumber, id)

public RasterTagMetadata ReadTag( 
   string fileName,
   int pageNumber,
   int id
)

- (nullable LTRasterTagMetadata *)readTag:(NSUInteger)tagId 
                                 fromFile:(NSString *)file 
                               pageNumber:(NSInteger)pageNumber 
                                    error:(NSError **)error
            

 function Leadtools.Codecs.RasterCodecs.ReadTag(String,Int32,Int32)( 
   fileName ,
   pageNumber ,
   id 
)

public:
RasterTagMetadata^ ReadTag( 
   String^ fileName,
   int pageNumber,
   int id
) 

Parameters

fileName

A String containing the input file name.

pageNumber

1-based index of the page from which to read the tag.

id

Tag to identify the data in the TIFF file. Use the same tag that you specified in the WriteTag. Examples of registered tags are:

Value	Meaning
0x8298	Copyright comment
0x8769	General Exif comments
0x8825	Exif GPS comments
0x80A4	Annotation TIFF tag

Return Value

This method is provided to support TIFF tags that you define. If no such tag exists in the image, this method will return a null reference.

To read all the tags stored in a file, use ReadTags

You can use TagsSupported to determine whether a certain file format supports tags.

Target Platforms

Reference

RasterCodecs Class
RasterCodecs Members
Overload List
Implementing TIFF Comments and Tags
EnumTags(string, int) Method
EnumTags(Stream, int) method