本文整理汇总了VB.NET中System.Security.Cryptography.AsnEncodedDataEnumerator.MoveNext方法的典型用法代码示例。如果您正苦于以下问题：VB.NET AsnEncodedDataEnumerator.MoveNext方法的具体用法？VB.NET AsnEncodedDataEnumerator.MoveNext怎么用？VB.NET AsnEncodedDataEnumerator.MoveNext使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Security.Cryptography.AsnEncodedDataEnumerator的用法示例。
在下文中一共展示了AsnEncodedDataEnumerator.MoveNext方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: AsnEncodedDataSample
' 导入命名空间
Imports System.Security.Cryptography
Imports System.Security.Cryptography.X509Certificates
Class AsnEncodedDataSample
Shared msg As String
Shared Sub Main()
'The following example demonstrates the usage the AsnEncodedData classes.
' Asn encoded data is read from the extensions of an X509 certificate.
Try
' Open the certificate store.
Dim store As New X509Store("MY", StoreLocation.CurrentUser)
store.Open((OpenFlags.ReadOnly Or OpenFlags.OpenExistingOnly))
Dim collection As X509Certificate2Collection = CType(store.Certificates, X509Certificate2Collection)
Dim fcollection As X509Certificate2Collection = CType(collection.Find(X509FindType.FindByTimeValid, DateTime.Now, False), X509Certificate2Collection)
' Select one or more certificates to display extensions information.
Dim scollection As X509Certificate2Collection = X509Certificate2UI.SelectFromCollection(fcollection, "Certificate Select", "Select certificates from the following list to get extension information on that certificate", X509SelectionFlag.MultiSelection)
' Create a new AsnEncodedDataCollection object.
Dim asncoll As New AsnEncodedDataCollection()
Dim i As Integer
For i = 0 To scollection.Count - 1
' Display certificate information.
msg = "Certificate name: "& scollection(i).GetName()
MsgBox(msg)
' Display extensions information.
Dim extension As X509Extension
For Each extension In scollection(i).Extensions
' Create an AsnEncodedData object using the extensions information.
Dim asndata As New AsnEncodedData(extension.Oid, extension.RawData)
msg = "Extension type: " & extension.Oid.FriendlyName & Environment.NewLine & "Oid value: " & asndata.Oid.Value _
& Environment.NewLine & "Raw data length: " & asndata.RawData.Length & Environment.NewLine _
& asndata.Format(True) & Environment.NewLine
MsgBox(msg)
' Add the AsnEncodedData object to the AsnEncodedDataCollection object.
asncoll.Add(asndata)
Next extension
Next i
msg = "Number of AsnEncodedData items in the collection: " & asncoll.Count
MsgBox(msg)
store.Close()
'Create an enumerator for moving through the collection.
Dim asne As AsnEncodedDataEnumerator = asncoll.GetEnumerator()
'You must execute a MoveNext() to get to the first item in the collection.
asne.MoveNext()
' Write out AsnEncodedData in the collection.
msg = "First AsnEncodedData in the collection: " & asne.Current.Format(True)
MsgBox(msg)
asne.MoveNext()
msg = "Second AsnEncodedData in the collection: " & asne.Current.Format(True)
MsgBox(msg)
'Return index in the collection to the beginning.
asne.Reset()
Catch
MsgBox("Information could not be written out for this certificate.")
End Try
End Sub
End Class