ZipFileExtensions ZipFileExtensions ZipFileExtensions ZipFileExtensions Class

Definice

Poskytuje metody rozšíření pro ZipArchive třídy a. ZipArchiveEntryProvides extension methods for the ZipArchive and ZipArchiveEntry classes.

public ref class ZipFileExtensions abstract sealed
public static class ZipFileExtensions
type ZipFileExtensions = class
Public Module ZipFileExtensions
Dědičnost
ZipFileExtensionsZipFileExtensionsZipFileExtensionsZipFileExtensions

Příklady

Následující příklad ukazuje, jak vytvořit novou položku v archivu zip z existujícího souboru a extrahovat obsah archivu do adresáře.The following example shows how to create a new entry in a zip archive from an existing file, and extract the contents of the archive to a directory.

using System;
using System.IO;
using System.IO.Compression;

namespace ConsoleApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            string zipPath = @"c:\users\exampleuser\start.zip";
            string extractPath = @"c:\users\exampleuser\extract";
            string newFile = @"c:\users\exampleuser\NewFile.txt";
            
            using (ZipArchive archive = ZipFile.Open(zipPath, ZipArchiveMode.Update))
            {
                archive.CreateEntryFromFile(newFile, "NewEntry.txt");
                archive.ExtractToDirectory(extractPath);
            } 
        }
    }
}
Imports System.IO
Imports System.IO.Compression

Module Module1

    Sub Main()
        Dim zipPath As String = "c:\users\exampleuser\end.zip"
        Dim extractPath As String = "c:\users\exampleuser\extract"
        Dim newFile As String = "c:\users\exampleuser\NewFile.txt"

        Using archive As ZipArchive = ZipFile.Open(zipPath, ZipArchiveMode.Update)
            archive.CreateEntryFromFile(newFile, "NewEntry.txt", CompressionLevel.Fastest)
            archive.ExtractToDirectory(extractPath)
        End Using
    End Sub

End Module

Následující příklad ukazuje, jak iterovat obsah archivu zip a extrahovat soubory s příponou. txt.The following example shows how to iterate through the contents of a zip archive and extract files that have a .txt extension.

using System;
using System.IO;
using System.IO.Compression;

class Program
{
    static void Main(string[] args)
    {
        string zipPath = @".\result.zip";

        Console.WriteLine("Provide path where to extract the zip file:");
        string extractPath = Console.ReadLine();

        // Normalizes the path.
        extractPath = Path.GetFullPath(extractPath);

        // Ensures that the last character on the extraction path
        // is the directory separator char. 
        // Without this, a malicious zip file could try to traverse outside of the expected
        // extraction path.
        if (!extractPath.EndsWith(Path.DirectorySeparatorChar.ToString(), StringComparison.Ordinal))
            extractPath += Path.DirectorySeparatorChar;

        using (ZipArchive archive = ZipFile.OpenRead(zipPath))
        {
            foreach (ZipArchiveEntry entry in archive.Entries)
            {
                if (entry.FullName.EndsWith(".txt", StringComparison.OrdinalIgnoreCase))
                {
                    // Gets the full path to ensure that relative segments are removed.
                    string destinationPath = Path.GetFullPath(Path.Combine(extractPath, entry.FullName));

                    // Ordinal match is safest, case-sensitive volumes can be mounted within volumes that
                    // are case-insensitive.
                    if (destinationPath.StartsWith(extractPath, StringComparison.Ordinal))
                        entry.ExtractToFile(destinationPath);
                }
            }
        }
    }
}
Imports System.IO
Imports System.IO.Compression

Module Module1

    Sub Main()
        Dim zipPath As String = ".\result.zip"

        Console.WriteLine("Provide path where to extract the zip file:")
        Dim extractPath As String = Console.ReadLine()

        ' Normalizes the path.
        extractPath = Path.GetFullPath(extractPath)

        ' Ensures that the last character on the extraction path
        ' is the directory separator char. 
        ' Without this, a malicious zip file could try to traverse outside of the expected
        ' extraction path.
        If Not extractPath.EndsWith(Path.DirectorySeparatorChar.ToString(), StringComparison.Ordinal) Then
            extractPath += Path.DirectorySeparatorChar
        End If

        Using archive As ZipArchive = ZipFile.OpenRead(zipPath)
            For Each entry As ZipArchiveEntry In archive.Entries
                If entry.FullName.EndsWith(".txt", StringComparison.OrdinalIgnoreCase) Then

                    ' Gets the full path to ensure that relative segments are removed.
                    Dim destinationPath As String = Path.GetFullPath(Path.Combine(extractPath, entry.FullName))
                    
                    ' Ordinal match is safest, case-sensitive volumes can be mounted within volumes that
                    ' are case-insensitive.
                    If destinationPath.StartsWith(extractPath, StringComparison.Ordinal) Then 
                        entry.ExtractToFile(destinationPath)
                    End If

                End If
            Next
        End Using
    End Sub

End Module

Poznámky

Třída obsahuje pouze statické metody, které ZipArchive přesahují třídy a ZipArchiveEntry. ZipFileExtensionsThe ZipFileExtensions class contains only static methods that extend the ZipArchive and ZipArchiveEntry classes. Nevytváříte instanci ZipFileExtensions třídy. místo toho můžete použít tyto metody z ZipArchive instancí nebo ZipArchiveEntry.You do not create an instance of the ZipFileExtensions class; instead, you use these methods from instances of ZipArchive or ZipArchiveEntry.

Chcete-li použít metody rozšíření, musíte odkazovat na System.IO.Compression.FileSystem sestavení v projektu.To use the extension methods, you must reference the System.IO.Compression.FileSystem assembly in your project. Sestavení není v Windows 8.x StoreWindows 8.x Store aplikacích k dispozici. System.IO.Compression.FileSystemThe System.IO.Compression.FileSystem assembly is not available in Windows 8.x StoreWindows 8.x Store apps. Proto třídy ZipFile System.IO.Compression.FileSystem a (oba, které jsou v sestavení) nejsou k dispozici v Windows 8.x StoreWindows 8.x Store aplikacích. ZipFileExtensionsTherefore, the ZipFileExtensions and ZipFile classes (both of which are in the System.IO.Compression.FileSystem assembly) are not available in Windows 8.x StoreWindows 8.x Store apps. V Windows 8.x StoreWindows 8.x Store aplikacích pracujete s komprimovanými soubory pomocí metod v ZipArchive, ZipArchiveEntry, DeflateStreama GZipStream.In Windows 8.x StoreWindows 8.x Store apps, you work with compressed files by using the methods in ZipArchive, ZipArchiveEntry, DeflateStream, and GZipStream.

Třída obsahuje čtyři metody, které přesahují ZipArchive: ZipFileExtensionsThe ZipFileExtensions class contains four methods that extend ZipArchive:

Třída obsahuje dvě metody, které přesahují ZipArchiveEntry: ZipFileExtensionsThe ZipFileExtensions class contains two methods that extend ZipArchiveEntry:

Metody

CreateEntryFromFile(ZipArchive, String, String) CreateEntryFromFile(ZipArchive, String, String) CreateEntryFromFile(ZipArchive, String, String) CreateEntryFromFile(ZipArchive, String, String)

Archivuje soubor pomocí jeho komprimace a jeho přidání do archivu zip.Archives a file by compressing it and adding it to the zip archive.

CreateEntryFromFile(ZipArchive, String, String, CompressionLevel) CreateEntryFromFile(ZipArchive, String, String, CompressionLevel) CreateEntryFromFile(ZipArchive, String, String, CompressionLevel) CreateEntryFromFile(ZipArchive, String, String, CompressionLevel)

Archivuje soubor pomocí komprimace na zadané úrovni komprese a jeho přidáním do archivu zip.Archives a file by compressing it using the specified compression level and adding it to the zip archive.

ExtractToDirectory(ZipArchive, String) ExtractToDirectory(ZipArchive, String) ExtractToDirectory(ZipArchive, String) ExtractToDirectory(ZipArchive, String)

Extrahuje všechny soubory v archivu zip do adresáře v systému souborů.Extracts all the files in the zip archive to a directory on the file system.

ExtractToDirectory(ZipArchive, String, Boolean) ExtractToDirectory(ZipArchive, String, Boolean) ExtractToDirectory(ZipArchive, String, Boolean) ExtractToDirectory(ZipArchive, String, Boolean)

Extrahuje všechny soubory v archivu do adresáře v systému souborů.Extracts all of the files in the archive to a directory on the file system.

ExtractToFile(ZipArchiveEntry, String) ExtractToFile(ZipArchiveEntry, String) ExtractToFile(ZipArchiveEntry, String) ExtractToFile(ZipArchiveEntry, String)

Extrahuje záznam v archivu zip do souboru.Extracts an entry in the zip archive to a file.

ExtractToFile(ZipArchiveEntry, String, Boolean) ExtractToFile(ZipArchiveEntry, String, Boolean) ExtractToFile(ZipArchiveEntry, String, Boolean) ExtractToFile(ZipArchiveEntry, String, Boolean)

Extrahuje záznam v archivu zip do souboru a volitelně přepíše existující soubor, který má stejný název.Extracts an entry in the zip archive to a file, and optionally overwrites an existing file that has the same name.

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