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ReadTag(string,int,int) Method

Summary

Gets the specified tagged data from a TIFF file. Tags|TIFF

Syntax

C#
VB
Objective-C
WinRT C#
C++
public RasterTagMetadata ReadTag( 
   string fileName, 
   int pageNumber, 
   int id 
) 
Public Overloads Function ReadTag( _ 
   ByVal fileName As String, _ 
   ByVal pageNumber As Integer, _ 
   ByVal id As Integer _ 
) As Leadtools.RasterTagMetadata 
public Leadtools.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: 
Leadtools.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

The tag data.

Remarks

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.

Example

For an example, refer to DeleteTag.

Requirements

Target Platforms

Help Version 19.0.2017.10.27
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