DeleteComment(Stream,int,RasterCommentMetadataType) Method

Summary

Deletes a comment field from a file.

Syntax

C++

public void DeleteComment( 
   Stream stream, 
   int pageNumber, 
   RasterCommentMetadataType type 
)

Public Overloads Sub DeleteComment( _ 
   ByVal stream As Stream, _ 
   ByVal pageNumber As Integer, _ 
   ByVal type As RasterCommentMetadataType _ 
)

public: 
void DeleteComment(  
   Stream^ stream, 
   int pageNumber, 
   RasterCommentMetadataType type 
)

Parameters

stream
A Stream containing the input file data.

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

type
The type of comment. Refer to Types of File Comments.

Remarks

This function only applies to TIF, EXIF, JPEG or JPEG 2000 files.

You can use CommentsSupported to determine whether a certain file format supports comments.

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Svg; 
 
 
public void DeleteCommentExample() 
{ 
	RasterCodecs codecs = new RasterCodecs(); 
 
	string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Test.jpg"); 
 
	RasterCommentMetadataType commentType = RasterCommentMetadataType.IptcKeywords; 
	RasterCommentMetadata comment = codecs.ReadComment(srcFileName, 1, commentType); 
	if (comment == null) 
		Debug.WriteLine("comment is already missing!"); 
	else 
	{ 
		codecs.DeleteComment(srcFileName, 1, commentType); 
 
		comment = codecs.ReadComment(srcFileName, 1, commentType); 
		if (comment != null) 
			Debug.WriteLine("comment is still there!"); 
	} 
 
	// Clean up 
	codecs.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images"; 
}

Requirements

Target Platforms

Reference

RasterCodecs Class

RasterCodecs Members

Overload List

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Help Version 21.0.2021.7.2

Leadtools.Codecs Assembly

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Leadtools.Codecs Namespace

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