(VB.NET) Unzip Files in a Date Range

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Demonstrates how to use the Zip.MinDate and Zip.MaxDate properties to unzip only those files with a last-modified date within a date range.

Note: This example requires Chilkat v10.0.0 or greater.

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' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim zip As New Chilkat.Zip

Dim success As Boolean = zip.OpenZip("qa_data/zips/sample.zip")
If (success <> True) Then
    Debug.WriteLine(zip.LastErrorText)
    Exit Sub
End If


' The MinDate and MaxDate properties use the timestamp date/time string format.
' Here are some examples:
' YYYY-MM-DD (e.g., 2024-07-31)
' YYYY-MM-DDTHH:MM:SS�HH:MM (e.g., 2024-07-31T12:34:56+02:00)
' 2024-07-31T12:34:56Z (the "Z" denotes Zulu time, or UTC)

' Only unzip files having a last-modified date greater than 1-Jan-2017
zip.MinDate = "2017-01-01T00:00:00Z"

' Also, only unzip files having a last-modified date less than the end of 2020
zip.MaxDate = "2020-12-31T23:59:59Z"

' You don't need to specify both MinDate and MaxDate.
' You can specify only one or the other if needed.

' The MinDate/MaxDate properties apply to all of the Chilkat methods for unzipping.

Dim numUnzipped As Integer = zip.Unzip("c:/temp/unzipDir")
If (numUnzipped < 0) Then
    Debug.WriteLine(zip.LastErrorText)
    Exit Sub
End If


zip.CloseZip()