ZipFile.OpenRead(String) Método

public:
 static System::IO::Compression::ZipArchive ^ OpenRead(System::String ^ archiveFileName);

public static System.IO.Compression.ZipArchive OpenRead (string archiveFileName);

static member OpenRead : string -> System.IO.Compression.ZipArchive

Public Shared Function OpenRead (archiveFileName As String) As ZipArchive

Parámetros

Devoluciones

El archivo zip abierto.

Excepciones

Ejemplos

En el ejemplo siguiente se muestra cómo abrir un archivo ZIP para su lectura.

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);
                }
            }
        }
    }
}

open System
open System.IO;
open System.IO.Compression;

[<EntryPoint>]
let main _ =
    let zipPath = @".\result.zip"

    printfn "Provide path where to extract the zip file:"
    let extractPath = stdin.ReadLine();

    // Normalizes the path.
    let mutable 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) |> not then
        extractPath <- extractPath + string Path.DirectorySeparatorChar

    use archive = ZipFile.OpenRead zipPath

    for entry in archive.Entries do
        if entry.FullName.EndsWith(".txt", StringComparison.OrdinalIgnoreCase) then
            // Gets the full path to ensure that relative segments are removed.
            let 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) then
                entry.ExtractToFile destinationPath
    0

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

Comentarios

Este método equivale a llamar al Open método y establecer el mode parámetro en Read. El archivo se abre con FileMode.Open como el valor del modo de archivo. Si el archivo no existe, se produce una FileNotFoundException excepción.

Se aplica a