This topic demonstrates how to add files to a zip file using the static Zip method of the QuickZip class.
Zip method
The Zip method has various overloads that can be used to zip files. Some only require that you specify the zip file and the files you want to add to the zip file while others let you decide on a number of other factors among which are the possibility to encrypt the files that are added to the zip file, create self-extracting zip files and create spanned or split zip files.
Demonstration
In the following example, we will create a regular zip file:
' Note: Pathnames must be modified for code snippets to work under the .NET Compact Framework.
Dim sfx As New XceedSfxPrefix(New DiskFile("C:\Program Files\Xceed Components\Bin\Sfx\xcdsfx32.bin"))
sfx.DialogStrings(DialogStrings.Title) = "Welcome to Xceed Zip for .NET!" sfx.DefaultDestinationFolder = "C:\"sfx.ExistingFileBehavior = ExistingFileBehavior.OverwriteOlderOnly
' This method will handle the DiskRequired events that are raised when creating ' spanned or split zip files.
Private Function QuickDiskRequired(ByVal zipFile As String, _ ByVal diskNumber As Integer, _ ByVal userData As Object) As Boolean
If (MessageBox.Show("Disk #" + diskNumber.ToString() + " is required.", _ "Disk Required", MessageBoxButtons.OKCancel) = DialogResult.OK) Then Return True Else Return False End If End Function
C#
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using Xceed.Zip; using Xceed.Zip.Sfx; using Xceed.FileSystem;
// Note: Pathnames must be modified for code snippets to work under the .NET Compact Framework.
XceedSfxPrefix sfx = new XceedSfxPrefix( new DiskFile( @"C:\Program Files\Xceed Components\Bin\Sfx\xcdsfx32.bin" ) );
sfx.DialogStrings[ DialogStrings.Title ] = "Welcome to Xceed Zip for .NET!"; sfx.DefaultDestinationFolder = @"C:\";sfx.ExistingFileBehavior = ExistingFileBehavior.OverwriteOlderOnly;
// This method will handle the DiskRequired events that are raised when creating // spanned or split zip files. private bool QuickDiskRequired( string zipFile, int diskNumber, object userData ) { if( MessageBox.Show( "Disk #" + diskNumber.ToString() + " is required.", "Disk Required", MessageBoxButtons.OKCancel ) == DialogResult.OK ) return true; else return false; }
Remarks
When recursively adding files to a zip file, you have to consider every filename you place in the filesToZip parameter as a filemask. For example, if you set the filesToZip parameter to "c:\file.txt", the entire "c:\" drive will be scanned and all the files that are named "file.txt" that are found will be included in the zip file.
Note that the filesToZip parameter of the Zip method cannot be null otherwise an ArgumentNullException exception will be thrown.
Things you should consider
The main questions you should ask yourself when adding files to a zip file are:
Do you want to do more complex zip file operations? Use the other classes defined within the Xceed.Zip namespace.
All zip files will automatically be created in the Zip64 zip file format if the limitations of the regular Zip format are reached.
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