(VB.NET UWP/WinRT) Get Certificate Valid To/From Dates

Demonstrates how to get the certificate "valid from" and "valid to" dates.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

Dim cert As New Chilkat.Cert

Dim success As Boolean = cert.LoadFromFile("qa_data/certs/testCert.cer")
If (success <> True) Then
    Debug.WriteLine(cert.LastErrorText)
    Exit Sub
End If


' Get the certificate valid-from date/time
Dim ckdt As Chilkat.CkDateTime = cert.GetValidFromDt()
' Get the local timestamp string.
Debug.WriteLine("Valid from: " & ckdt.GetAsTimestamp(True))
' Valid from: 2017-03-17T19:00:00-05:00

' Now get the date/time as another object where we can get the individual numeric date parts.
Dim dt As Chilkat.DtObj = ckdt.GetDtObj(True)
Debug.WriteLine(dt.Day & "/" & dt.Month & "/" & dt.Year & "  " & dt.Hour & ":" & dt.Minute)



' Get the certificate valid-to date/time
ckdt = cert.GetValidToDt()
Debug.WriteLine("Valid to: " & ckdt.GetAsTimestamp(True))
' Valid to: 2020-03-18T18:59:59-05:00
dt = ckdt.GetDtObj(True)
Debug.WriteLine(dt.Day & "/" & dt.Month & "/" & dt.Year & "  " & dt.Hour & ":" & dt.Minute)