GroupDocs.Metadata for .NET 17.12 Release Notes
This page contains release notes for GroupDocs.Metadata for .NET 17.12.
Major Features
There are 2 new features in this regular monthly release. The most notable are:
- Ability to remove comment in ZIP format
- Ability to read thumbnail of EXIF format
All Changes
| Key | Summary | Category |
|---|---|---|
| METADATANET-2015 | Ability to remove comment of ZIP format | New Feature |
| METADATANET-2016 | Ability to read thumbnail of JPEG format from EXIF segment | New Feature |
Public API and Backward Incompatible Changes
This section lists public API changes that were introduced in GroupDocs.Metadata for .NET 17.12. It includes not only new and obsoleted public methods, but also a description of any changes in the behavior behind the scenes in GroupDocs.Metadata which may affect existing code. Any behavior introduced that could be seen as a regression and modifies existing behavior is especially important and is documented here.
Ability to remove comment of ZIP format
Description
This feature allows removing user comment in ZIP format.
Public API changes
Added RemoveFileComment method to class GroupDocs.Metadata.Formats.Archive.ZipFormat.
Usecases
This example demonstrates how to remove user comment in ZIP format.
string path = "..";
// open zip
ZipFormat zipFormat = new ZipFormat(path);
// remove user comment
zipFormat.RemoveFileComment();
// and commit changes
zipFormat.Save();
Ability to read thumbnail of JPEG format from EXIF segment
Description
This feature allows reading thumbnail of JPEG format from EXIF segment. It’s very useful for large images.
Public API changes
Added Thumbnail property to class GroupDocs.Metadata.Formats.Image.ExifInfo.
Usecases
This example demonstrates how to read thumbnail of JPEG format from EXIF segment and store it to a file.
// init jpeg
JpegFormat jpeg = new JpegFormat(path);
// get exif data
var exifData = jpeg.GetExifInfo();
if (exifData != null)
{
// get thumbnail
byte[] thumbnail = exifData.Thumbnail;
// if exist then store to the file
if (thumbnail.Length > 0)
{
File.WriteAllBytes("C:\\1.jpeg", thumbnail);
}
}