'Declaration
 
Public Overloads Shared Sub Zip( _
   ByVal zipFileName As String, _
   ByVal encryptionPassword As String, _
   ByVal replaceExistingFiles As Boolean, _
   ByVal recursive As Boolean, _
   ByVal preservePaths As Boolean, _
   ByVal splitSize As Long, _
   ByVal splitNameFormat As SplitNameFormat, _
   ByVal ParamArray filesToZip() As String _
) 

'Usage
 
Dim zipFileName As String
Dim encryptionPassword As String
Dim replaceExistingFiles As Boolean
Dim recursive As Boolean
Dim preservePaths As Boolean
Dim splitSize As Long
Dim splitNameFormat As SplitNameFormat
Dim filesToZip() As String
 
QuickZip.Zip(zipFileName, encryptionPassword, replaceExistingFiles, recursive, preservePaths, splitSize, splitNameFormat, filesToZip)

public static void Zip( 
   string zipFileName,
   string encryptionPassword,
   bool replaceExistingFiles,
   bool recursive,
   bool preservePaths,
   long splitSize,
   SplitNameFormat splitNameFormat,
   params string[] filesToZip
)

Parameters

zipFileName

The fully-qualified path and name of the zip file.

encryptionPassword

The password that will be used to encrypt the files.

replaceExistingFiles

Boolean value indicating if existing files should be overwritten.

recursive

Boolean value indicating if files contained within sub-folders should be added to the zip file.

preservePaths

Boolean value indicating if the directory structure should be preserved in the zip file.

splitSize

The size, in bytes, of each split zip file part that will be created.

splitNameFormat

The naming convention the split zip file parts will follow.

filesToZip

The files to add to zipFileName. Can contain filemasks and folder names (ending with a backslash). All subfolders will also be scanned for the specified file(s), even if wildcards are not used, if recursive is set to true. For example, if "C:\test.txt" is specified, all "test.txt" files found on the "C:\" drive will be added to the zip file. Folders specified with the backslash after them will include their entire contents. Cannot be a null reference (Nothing in Visual Basic).

If zipFileName does not exist, it will be created and then the files will be added.

Unicode and FileTimes extra headers are stored in the zip file when new items are added to the zip file. The extra headers of items that already exist in the zip file will not be modified.

The EncryptionMethod.Compatible encryption method will be used with this overload.

All zip files will automatically be created in the Zip64 zip file format if the limitations of the regular Zip format are reached.

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

Reference

QuickZip Class
QuickZip Members
Overload List

Creating secure passwords

Strong passwords: How to create and use them
Create secure password or login