Overloads Public Function ReadGeoKey( _
   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.ReadGeoKey(fileName, pageNumber, id)

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

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

Parameters

fileName

A System.String containing the input file name.

pageNumber

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

id

GeoKey ID. Values of the GeoKey ID range between 0 and 65535. Possible ranges are:

Range	Meaning
0..1023	Do not use; reserved for future use.
1024..2047	GeoTIFF Configuration Keys.
2048..3071	Geographic/Geocentric CS Parameter Keys.
3072..4095	Projected CS Parameter Keys.
4096..5119	Vertical CS Parameter Keys.
5120..32767	Reserved.
32768..65535	Private use - use to store your own data.

Return Value

You can use this method to obtain the GeoKey data from a particular file.

If no such GeoKey exists in the image, this method will return a null reference (Nothing in Visual Basic).

The most efficient way of reading the GeoKeys in a file is to enumerate them with EnumGeoKeys(String,Int32) and then read each GeoKey with ReadGeoKey(String,Int32,Int32).

Target Platforms: Silverlight, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)

Reference