Create a Password Protected Zip

Download Chilkat .NET for 2.0 / 3.5 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

Example program showing how to create a password-protected Zip using the Chilkat Zip .NET library.

        Dim zip As New Chilkat.Zip()

        ' Anything begins the 30-day trial
        Dim unlocked As Boolean
        unlocked = zip.UnlockComponent("30-day trial")
        If (Not unlocked) Then
            MsgBox("Failed to unlock Zip library")
            Exit Sub
        End If

        zip.NewZip("test.zip")

        ' Create the Zip with password protection.
        zip.PasswordProtect = True
        zip.SetPassword("myPassword")

        ' Append files to the password-protected Zip.
        Dim success As Boolean
        zip.AppendFromDir = "c:/temp/something"
        ' Add the entire directory tree.
        success = zip.AppendFiles("*", True)
        If (Not success) Then
            MsgBox(zip.LastErrorText)
            Exit Sub
        End If

        ' Write the password-protected Zip file.
        success = zip.WriteZipAndClose()
        If (Not success) Then
            MsgBox(zip.LastErrorText)
        Else
            MsgBox("Created Password Protected Zip!")
        End If

Important: The download for this example does not contain the ChilkatDotNet.dll which
must be downloaded and installed separately at http://www.chilkatsoft.com/downloads.asp.
Once installed, add a reference to the DLL in the project by following the instructions at
http://www.example-code.com/vbdotnet/step2.asp