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DnsPermission.Copy Method

Creates an identical copy of the current permission instance.

Namespace:  System.Net
Assembly:  System (in System.dll)

Public Overrides Function Copy As IPermission

Return Value

Type: System.Security.IPermission
A new instance of the DnsPermission class that is an identical copy of the current instance.



A copy of a DnsPermission instance provides the same access to DNS servers as the original permission instance.

The following example creates an identical copy of an existing DnsPermission instance.

    Public Sub UseDns()
        ' Create a DnsPermission instance.
        Dim myPermission As New DnsPermission(PermissionState.Unrestricted)
        ' Check for permission.
        ' Create an identical copy of the above DnsPermission object.
        Dim myPermissionCopy As DnsPermission = CType(myPermission.Copy(), DnsPermission)
        Console.WriteLine("Attributes and Values of 'DnsPermission' instance :")
        ' Print the attributes and values.
        Console.WriteLine("Attribute and values of copied instance :")
    End Sub 'UseDns

    Private Sub PrintKeysAndValues(myHashtable As Hashtable)
        ' Get the enumerator that can iterate through he hash table.
        Dim myEnumerator As IDictionaryEnumerator = myHashtable.GetEnumerator()
        Console.WriteLine(ControlChars.Tab + "-KEY-" + ControlChars.Tab + "-VALUE-")
        While myEnumerator.MoveNext()
            Console.WriteLine(ControlChars.Tab + "{0}:" + ControlChars.Tab + "{1}", myEnumerator.Key, myEnumerator.Value)
        End While
    End Sub 'PrintKeysAndValues

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.