本文整理匯總了VB.NET中System.Security.Policy.Evidence類的典型用法代碼示例。如果您正苦於以下問題:VB.NET Evidence類的具體用法?VB.NET Evidence怎麽用?VB.NET Evidence使用的例子?那麽, 這裏精選的類代碼示例或許可以為您提供幫助。
在下文中一共展示了Evidence類的1個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1: Evidence_Example
' 導入命名空間
Imports System.Collections
Imports System.Security
Imports System.Security.Policy
Imports System.Security.Permissions
Imports System.Globalization
Public Class Evidence_Example
Public Function CreateEvidence() As Boolean
Dim retVal As Boolean = True
Try
' Create empty evidence using the default contructor.
Dim ev1 As New Evidence
Console.WriteLine("Created empty evidence with the default constructor.")
' Constructor used to create null host evidence.
Dim ev2a As New Evidence(Nothing)
Console.WriteLine("Created an Evidence object with null host evidence.")
' Constructor used to create host evidence.
Dim url As New Url("http://www.treyresearch.com")
Console.WriteLine(("Adding host evidence " & url.ToString()))
ev2a.AddHost(url)
Dim ev2b As New Evidence(ev2a)
Console.WriteLine("Copy evidence into new evidence")
Dim enum1 As IEnumerator = ev2b.GetHostEnumerator()
enum1.MoveNext()
Console.WriteLine(enum1.Current.ToString())
' Constructor used to create both host and assembly evidence.
Dim oa1() As [Object]
Dim site As New Site("www.wideworldimporters.com")
Dim oa2 As [Object]() = {url, site}
Dim ev3a As New Evidence(oa1, oa2)
enum1 = ev3a.GetHostEnumerator()
Dim enum2 As IEnumerator = ev3a.GetAssemblyEnumerator()
enum2.MoveNext()
Dim obj1 As [Object] = enum2.Current
enum2.MoveNext()
Console.WriteLine(("URL = " & obj1.ToString() & " Site = " & enum2.Current.ToString()))
' Constructor used to create null host and null assembly evidence.
Dim ev3b As New Evidence(Nothing, Nothing)
Console.WriteLine("Create new evidence with null host and assembly evidence")
Catch e As Exception
Console.WriteLine("Fatal error: {0}", e.ToString())
Return False
End Try
Return retVal
End Function 'CreateEvidence
Public Function DemonstrateEvidenceMembers() As Evidence
Dim myEvidence As New Evidence
Dim sPubKeyBlob As String = "00240000048000009400000006020000" & "00240000525341310004000001000100" & "19390E945A40FB5730204A25FA5DC4DA" & "B18688B412CB0EDB87A6EFC50E2796C9" & "B41AD3040A7E46E4A02516C598678636" & "44A0F74C39B7AB9C38C01F10AF4A5752" & "BFBCDF7E6DD826676AD031E7BCE63393" & "495BAD2CA4BE03B529A73C95E5B06BE7" & "35CA0F622C63E8F54171BD73E4C8F193" & "CB2664163719CA41F8159B8AC88F8CD3"
Dim pubkey As [Byte]() = HexsToArray(sPubKeyBlob)
' Create a strong name.
Dim mSN As New StrongName(New StrongNamePublicKeyBlob(pubkey), "SN01", New Version("0.0.0.0"))
' Create assembly and host evidence.
Console.WriteLine("Adding assembly evidence.")
myEvidence.AddAssembly("SN01")
myEvidence.AddAssembly(New Version("0.0.0.0"))
myEvidence.AddAssembly(mSN)
Console.WriteLine(("Count of evidence items = " & myEvidence.Count.ToString()))
Dim url As New Url("http://www.treyresearch.com")
Console.WriteLine(("Adding host evidence " & url.ToString()))
myEvidence.AddHost(url)
PrintEvidence(myEvidence).ToString()
Console.WriteLine(("Count of evidence items = " & myEvidence.Count.ToString()))
Console.WriteLine(ControlChars.Lf & "Copy the evidence to an array using CopyTo, then display the array.")
Dim evidenceArray(myEvidence.Count - 1) As Object
myEvidence.CopyTo(evidenceArray, 0)
Dim obj As Object
For Each obj In evidenceArray
Console.WriteLine(obj.ToString())
Next obj
Console.WriteLine(ControlChars.Lf & "Display the contents of the properties.")
Console.WriteLine("Locked is the only property normally used by code.")
Console.WriteLine("IsReadOnly, IsSynchronized, and SyncRoot properties are not normally used.")
Console.WriteLine((ControlChars.Lf & "The default value for the Locked property = " & myEvidence.Locked.ToString()))
Console.WriteLine(ControlChars.Lf & "Get the hashcode for the evidence.")
Console.WriteLine(("HashCode = " & myEvidence.GetHashCode().ToString()))
Console.WriteLine(ControlChars.Lf & "Get the type for the evidence.")
Console.WriteLine(("Type = " & myEvidence.GetType().ToString()))
Console.WriteLine(ControlChars.Lf & "Merge new evidence with the current evidence.")
Dim oa1() As [Object]
Dim site As New Site("www.wideworldimporters.com")
Dim oa2 As [Object]() = {url, site}
Dim newEvidence As New Evidence(oa1, oa2)
myEvidence.Merge(newEvidence)
Console.WriteLine(("Evidence count = " & PrintEvidence(myEvidence).ToString()))
Console.WriteLine(ControlChars.Lf & "Remove URL evidence.")
myEvidence.RemoveType(url.GetType())
Console.WriteLine(("Evidence count is now: " & myEvidence.Count.ToString()))
Console.WriteLine(ControlChars.Lf & "Make a copy of the current evidence.")
Dim evidenceCopy As New Evidence(myEvidence)
Console.WriteLine(("Count of new evidence items = " & evidenceCopy.Count.ToString()))
Console.WriteLine(("Does the copy equal the current evidence? " & myEvidence.Equals(evidenceCopy)))
Console.WriteLine(ControlChars.Lf & "Clear the current evidence.")
myEvidence.Clear()
Console.WriteLine(("Count is now " & myEvidence.Count.ToString()))
Return myEvidence
End Function 'DemonstrateEvidenceMembers
Public Shared Function PrintEvidence(ByVal myEvidence As Evidence) As Integer
Dim p As Integer = 0
Console.WriteLine(ControlChars.Lf & "Current evidence = ")
If myEvidence Is Nothing Then
Return 0
End If
Dim list As IEnumerator = myEvidence.GetEnumerator()
Dim obj As Object
While list.MoveNext()
Console.WriteLine(list.Current.ToString())
p = p + 1
End While
Console.WriteLine(ControlChars.Lf)
Return p
End Function 'PrintEvidence
' Convert a hexidecimal string to an array.
Public Shared Function HexsToArray(ByVal sHexString As String) As Byte()
Dim array(sHexString.Length / 2) As [Byte]
Dim i As Integer
For i = 0 To sHexString.Length - 2 Step 2
array((i / 2)) = [Byte].Parse(sHexString.Substring(i, 2), NumberStyles.HexNumber)
Next i
Return array
End Function 'HexsToArray
' Main method.
Public Shared Sub Main()
Try
Dim EvidenceTest As New Evidence_Example
Dim ret As Boolean = EvidenceTest.CreateEvidence()
If ret Then
Console.WriteLine("Evidence successfully created.")
Else
Console.WriteLine("Evidence creation failed.")
End If
EvidenceTest.DemonstrateEvidenceMembers()
Catch e As Exception
Console.WriteLine(e.ToString())
Environment.ExitCode = 101
End Try
End Sub
End Class