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SocketPermission.ToXml Method

Creates an XML encoding of a SocketPermission instance and its current state.

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

'Declaration
Public Overrides Function ToXml As SecurityElement

Return Value

Type: System.Security.SecurityElement
A SecurityElement instance that contains an XML-encoded representation of the SocketPermission instance, including state information.

Implements

ISecurityEncodable.ToXml

The ToXml method creates a SecurityElement instance to encode a representation of the SocketPermission instance, including state information, in XML.

Use the FromXml method to restore the state information from a SecurityElement instance.

The following example uses the ToXml method to convert a SocketPermission to XML.



	Dim socketPermission1 As New SocketPermission(PermissionState.Unrestricted)
	
        'Create a 'SocketPermission' object for two ip addresses.
        Dim socketPermission2 As New SocketPermission(PermissionState.None)
        Dim securityElement4 As SecurityElement = socketPermission2.ToXml()
        ''SocketPermission' object for 'Connect' permission
        Dim securityElement1 As New SecurityElement("ConnectAccess")
        'Format to specify ip address are <ip-address>#<port>#<transport-type>
        'First 'SocketPermission' ip-address is '192.168.144.238' for 'All' transport types and for 'All' ports for the ip-address.
        Dim securityElement2 As New SecurityElement("URI", "192.168.144.238#-1#3")
        'Second 'SocketPermission' ip-address is '192.168.144.240' for 'All' transport types and for 'All' ports for the ip-address.
        Dim securityElement3 As New SecurityElement("URI", "192.168.144.240#-1#3")
        securityElement1.AddChild(securityElement2)
        securityElement1.AddChild(securityElement3)
        securityElement4.AddChild(securityElement1)

        'Obtain a 'SocketPermission' object using 'FromXml' method.	
        socketPermission2.FromXml(securityElement4)

        'Create another 'SocketPermission' object with two ip addresses.
        'First 'SocketPermission' ip-address is '192.168.144.238' for 'All' transport types and for 'All' ports for the ip-address.
        Dim socketPermission3 As New SocketPermission(NetworkAccess.Connect, TransportType.All, "192.168.144.238", SocketPermission.AllPorts)

        'Second 'SocketPermission' ip-address is '192.168.144.239' for 'All' transport types and for 'All' ports for the ip-address.
        socketPermission3.AddPermission(NetworkAccess.Connect, TransportType.All, "192.168.144.239", SocketPermission.AllPorts)

        Console.WriteLine(ControlChars.Cr + "Checks the Socket permissions using IsUnrestricted method : ")
        If socketPermission1.IsUnrestricted() Then
            Console.WriteLine("Socket permission is unrestricted")
        Else
            Console.WriteLine("Socket permission is restricted")
        End If 
        Console.WriteLine()

        Console.WriteLine("Display result of ConnectList property : " + ControlChars.Cr)
        Dim enumerator As IEnumerator = socketPermission3.ConnectList
        While enumerator.MoveNext()
            Console.WriteLine("The hostname is       : {0}", CType(enumerator.Current, EndpointPermission).Hostname)
            Console.WriteLine("The port is           : {0}", CType(enumerator.Current, EndpointPermission).Port)
            Console.WriteLine("The Transport type is : {0}", CType(enumerator.Current, EndpointPermission).Transport)
        End While

        Console.WriteLine("")

        Console.WriteLine("Display Security Elements :" + ControlChars.Cr + " ")
        PrintSecurityElement(socketPermission2.ToXml(), 0)

        'Get a 'SocketPermission' object which is a union of two other 'SocketPermission' objects.
        socketPermission1 = CType(socketPermission3.Union(socketPermission2), SocketPermission)

        'Demand that the calling method have the socket permission.
        socketPermission1.Demand()


.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.
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