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

Visual Basic (Usage)	Copy Code
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
)

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 (Nothing in Visual Basic).

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

You can use RasterCodecs.TagsSupported to check if a certain file format supports tags.

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

Reference