COMPRESSER UN FICHIER PDF

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Si vous utilisez le cadre. NET Framework, add references to these two libraries to your project: System. Compression System. The following example shows how to create and extract a compressed. The example compresses the contents of a folder into a new. To run the sample, create a start folder in your program folder and populate it with files to zip. The next example iterates through the contents of an existing.

It uses the ZipArchive class to access the zip, and the ZipArchiveEntry class to inspect the individual entries. ZipFileExtensions class. To run the sample, place a.

When prompted, provide a folder name to extract to. When unzipping files, you must look for malicious file paths, which can escape out of the directory you unzip into. This is known as a path traversal attack. The following example demonstrates how to check for malicious file paths and provides a safe way to unzip. IO; using System. EndsWith Path. ToString , StringComparison. EndsWith ". GetFullPath Path. Combine extractPath, entry. StartsWith extractPath, StringComparison.

Ordinal entry. IO Imports System. If Not extractPath. Entries If entry. If destinationPath. Ordinal Then entry. The following example uses the ZipArchive class to access an existing. The new file gets compressed when you add it to the existing zip. CreateEntry "Readme. WriteLine "Information about this package. Open writer. They use the same compression algorithm. You can decompress GZipStream objects that are written to a. GetAttributes fileToCompress. Create fileToCompress.

Remove currentFileName. Length - fileToDecompress. CopyTo decompressedFileStream ; Console. OpenRead If File. FullName And FileAttributes. Hidden And fileToCompress. Compress originalFileStream.

Decompress decompressionStream. CopyTo decompressedFileStream Console.

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