The zip file will automatically be updated when the value of the ExtraHeaders is changed. If batch modifications are to be made to the zip file, it is recommended that they be made between calls to the ZipArchive's BeginUpdate and EndUpdate methods.
By default, a zip file created with a version of Xceed Zip for .NET prior to 2.2, WinZip, or Windows XP Compressed Folders, among others, will only preserve the last modified date and time.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2