ZipArchive.CreateEntry Method (String, CompressionLevel)
Creates an empty entry that has the specified entry name and compression level in the zip archive.
Assembly: System.IO.Compression (in System.IO.Compression.dll)
member CreateEntry : entryName:string * compressionLevel:CompressionLevel -> ZipArchiveEntry
A path, relative to the root of the archive, that specifies the name of the entry to be created.
One of the enumeration values that indicates whether to emphasize speed or compression effectiveness when creating the entry.
Return ValueType: System.IO.Compression.ZipArchiveEntry
An empty entry in the zip archive.
The entryName string should reflect the relative path of the entry you want to create within the zip archive. There is no restriction on the string you provide. However, if it is not formatted as a relative path, the entry is created, but you may get an exception when you extract the contents of the zip archive. If an entry with the specified name already exists in the archive, a second entry is created with the same name.
The value of the LastWriteTime property for the new entry is set to the current time. Set the compressionLevel parameter to Optimal if you want the file to be compressed as much as possible. Set the compressionLevel parameter to Fastest only if you are concerned that the compression operation will not complete quickly enough for your scenario.
Available since 8
Available since 4.5
Portable Class Library
Supported in: portable .NET platforms
Available since 8.1