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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
'Usage
Dim instance As SocketPermission
Dim returnValue As SecurityElement

returnValue = instance.ToXml
public SecurityElement ToXml ()
public override function ToXml () : SecurityElement
Not applicable.

Return Value

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

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()

SocketPermission socketPermission1 = 
    new SocketPermission(PermissionState.Unrestricted);

// Create a 'SocketPermission' object for two ip addresses.
SocketPermission socketPermission2 = 
    new SocketPermission(PermissionState.None);
SecurityElement securityElement4 = socketPermission2.ToXml();

// 'SocketPermission' object for 'Connect' permission
SecurityElement securityElement1 = 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.
SecurityElement securityElement2 = 
    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.
SecurityElement securityElement3 = 
    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.
SocketPermission socketPermission3 = 
    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("\nChecks the Socket permissions using "
    + "IsUnrestricted method : ");
if (socketPermission1.IsUnrestricted()) {
    Console.WriteLine("Socket permission is unrestricted");
}
else {
    Console.WriteLine("Socket permission is restricted");
}

Console.WriteLine();
Console.WriteLine("Display result of ConnectList property : \n");

IEnumerator enumerator = socketPermission3.get_ConnectList();

while (enumerator.MoveNext()) {
    Console.WriteLine("The hostname is       : {0}", 
        ((EndpointPermission)enumerator.get_Current()).get_Hostname());
    Console.WriteLine("The port is           : {0}", (Int32)
        ((EndpointPermission)enumerator.get_Current()).get_Port());
    Console.WriteLine("The Transport type is : {0}", 
        ((EndpointPermission)enumerator.get_Current()).get_Transport());
}

Console.WriteLine("");
Console.WriteLine("Display Security Elements :\n ");
PrintSecurityElement(socketPermission2.ToXml(), 0);

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

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

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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