Where does Entry live in the IronZip API?

Entry is a class in the IronZip namespace, shipped in IronZip.dll. Instances are produced by IronZipArchive.Entries(), which returns a List describing each item in the archive.

How do you list the files inside a ZIP archive in C#?

Open the archive with IronZipArchive, call Entries() to get a List , and read each Entry.Name. The list reflects the archive as opened, so no extraction is needed to inspect it.

What is the difference between Size and CompressedSize on an Entry?

Size is the original uncompressed byte length of the file, and CompressedSize is the stored length inside the archive. Comparing the two shows how much compression the entry achieved.

Class Entry

Inheritance

System.Object

Entry

Namespace: IronZip

Assembly: IronZip.dll

Syntax

public class Entry : Object

Each file inside a ZIP archive, with its name, size, timestamp, and encryption state, is described by an Entry. A developer rarely constructs one; instead IronZipArchive.Entries() returns a List<Entry>, one per item in the archive, for inspecting contents before extracting. Reading these properties answers the common questions about an archive without unpacking it to disk.

The properties fall into groups. Identity covers Name, IsFile, IsDirectory, and Comment. Size and compression cover Size (the original byte length), CompressedSize (the stored length), CompressionMethod (an EncryptionMethods value), and the Crc checksum. Security covers IsCrypted and the AES detail properties (AESKeySize, AESEncryptionStrength, and related). Timing covers DateTime and DosTime. The remaining flags (HasCrc, IsUnicodeText, LocalHeaderRequiresZip64, and similar) expose low-level ZIP header state for advanced inspection.

To audit an archive, open it, call Entries(), and read the properties that matter: compare Size against CompressedSize to see the saving, check IsCrypted to find protected items, or read Name to list contents. The values are a snapshot of the archive as opened; changing them does not rewrite the archive, so use the archive's own Add, Delete, and ReplaceEntry methods to modify contents. The AES properties such as AESKeySize and AESEncryptionStrength are meaningful only when IsCrypted is true and the entry uses AES rather than Traditional encryption, and IsDirectory separates folder placeholders from real files when walking the list.

using IronZip;

using var archive = new IronZipArchive("input.zip");
foreach (Entry entry in archive.Entries())
{
    Console.WriteLine($"{entry.Name} ({entry.Size} bytes)");
}

The view archive entries example lists contents this way, and the create, read, and extract tutorial shows reading entries inside a full workflow.

Constructors

Entry(ZipEntry)

Declaration

public Entry(ZipEntry zipEntry)

Parameters

Type	Name	Description
ICSharpCode.SharpZipLib.Zip.ZipEntry	zipEntry

Properties

AESEncryptionStrength

Declaration

public int AESEncryptionStrength { get; set; }

Property Value

Type	Description
System.Int32

AESKeySize

Declaration

public int AESKeySize { get; set; }

Property Value

Type	Description
System.Int32

AESOverheadSize

Declaration

public int AESOverheadSize { get; set; }

Property Value

Type	Description
System.Int32

AESSaltLen

Declaration

public int AESSaltLen { get; set; }

Property Value

Type	Description
System.Int32

CanDecompress

Declaration

public bool CanDecompress { get; set; }

Property Value

Type	Description
System.Boolean

CentralHeaderRequiresZip64

Declaration

public bool CentralHeaderRequiresZip64 { get; set; }

Property Value

Type	Description
System.Boolean

Comment

Declaration

public string Comment { get; set; }

Property Value

Type	Description
System.String

CompressedSize

Declaration

public long CompressedSize { get; set; }

Property Value

Type	Description
System.Int64

CompressionMethod

Declaration

public EncryptionMethods CompressionMethod { get; set; }

Property Value

Type	Description
EncryptionMethods

Crc

Declaration

public long Crc { get; set; }

Property Value

Type	Description
System.Int64

CryptoCheckValue

Declaration

public int CryptoCheckValue { get; set; }

Property Value

Type	Description
System.Int32

DateTime

Declaration

public DateTime DateTime { get; set; }

Property Value

Type	Description
System.DateTime

DosTime

Declaration

public long DosTime { get; set; }

Property Value

Type	Description
System.Int64

EncryptionOverheadSize

Declaration

public int EncryptionOverheadSize { get; set; }

Property Value

Type	Description
System.Int32

ExternalFileAttributes

Declaration

public int ExternalFileAttributes { get; set; }

Property Value

Type	Description
System.Int32

ExtraData

Declaration

public byte[] ExtraData { get; set; }

Property Value

Type	Description
System.Byte[]

Flags

Declaration

public int Flags { get; set; }

Property Value

Type	Description
System.Int32

HasCrc

Declaration

public bool HasCrc { get; set; }

Property Value

Type	Description
System.Boolean

HostSystem

Declaration

public int HostSystem { get; set; }

Property Value

Type	Description
System.Int32

IsCrypted

Declaration

public bool IsCrypted { get; set; }

Property Value

Type	Description
System.Boolean

IsDirectory

Declaration

public bool IsDirectory { get; set; }

Property Value

Type	Description
System.Boolean

IsDosEntry

Declaration

public bool IsDosEntry { get; set; }

Property Value

Type	Description
System.Boolean

IsFile

Declaration

public bool IsFile { get; set; }

Property Value

Type	Description
System.Boolean

IsUnicodeText

Declaration

public bool IsUnicodeText { get; set; }

Property Value

Type	Description
System.Boolean

LocalHeaderRequiresZip64

Declaration

public bool LocalHeaderRequiresZip64 { get; set; }

Property Value

Type	Description
System.Boolean

Name

Declaration

public string Name { get; set; }

Property Value

Type	Description
System.String

Offset

Declaration

public long Offset { get; set; }

Property Value

Type	Description
System.Int64

Size

Declaration

public long Size { get; set; }

Property Value

Type	Description
System.Int64

Version

Declaration

public int Version { get; set; }

Property Value

Type	Description
System.Int32

VersionMadeBy

Declaration

public int VersionMadeBy { get; set; }

Property Value

Type	Description
System.Int32

ZipFileIndex

Declaration

public long ZipFileIndex { get; set; }

Property Value

Type	Description
System.Int64