WebPermission.FromXml(SecurityElement) Methode

Definition

Namespace:

System.Net

Assembly:

System.Security.Permissions.dll

Paket:

System.Security.Permissions v9.0.0-preview.5.24306.7

Quelle:

WebPermission.cs

Rekonstruiert eine WebPermission aus einer XML-Codierung.

public:
 override void FromXml(System::Security::SecurityElement ^ securityElement);

public override void FromXml (System.Security.SecurityElement securityElement);

override this.FromXml : System.Security.SecurityElement -> unit

Public Overrides Sub FromXml (securityElement As SecurityElement)

Parameter

securityElement

SecurityElement

Die XML-Codierung, aus der die WebPermission rekonstruiert wird.

Ausnahmen

ArgumentNullException

Der securityElement-Parameter ist null.

ArgumentException

securityElement ist kein Berechtigungselement für diesen Typ.

Beispiele

Im folgenden Beispiel wird ein System.Security.SecurityElementerstellt, das seine Attribute auffüllt und verwendet FromXml , um diese Informationen an eine Instanz von WebPermissionzu übertragen.

// Create  a WebPermission without permission on the protected resource
WebPermission^ myWebPermission1 = gcnew WebPermission( PermissionState::None );

// Create a SecurityElement by calling the ToXml method on the WebPermission
// instance and display its attributes (which hold the XML encoding of
// the WebPermission).
Console::WriteLine( "Attributes and Values of the WebPermission are:" );
myWebPermission1->ToXml();

// Create another WebPermission with no permission on the protected resource
WebPermission^ myWebPermission2 = gcnew WebPermission( PermissionState::None );

//Converts the new WebPermission from XML using myWebPermission1.
myWebPermission2->FromXml( myWebPermission1->ToXml() );

// Create  a WebPermission without permission on the protected resource.
WebPermission myWebPermission1 = new WebPermission(PermissionState.None);

// Create a SecurityElement by calling the ToXml method on the WebPermission 
// instance and display its attributes (which hold the XML encoding of 
// the WebPermission).
Console.WriteLine("Attributes and Values of the WebPermission are :");
myWebPermission1.ToXml().ToString();

// Create another WebPermission with no permission on the protected resource.
WebPermission myWebPermission2 = new WebPermission(PermissionState.None);

//Converts the new WebPermission from XML using myWebPermission1.
myWebPermission2.FromXml(myWebPermission1.ToXml());

' Create  a WebPermission without permission on the protected resource.
Dim myWebPermission1 As New WebPermission(PermissionState.None)

' Create a SecurityElement by calling the ToXml method on the WebPermission 
' instance and display its attributes (which hold the XML encoding of 
' the WebPermission).
Console.WriteLine("Attributes and Values of the WebPermission are :")
myWebPermission1.ToXml().ToString()

' Create another WebPermission with no permission on the protected resource.
Dim myWebPermission2 As New WebPermission(PermissionState.None)

'Converts the new WebPermission from XML using myWebPermission1.
myWebPermission2.FromXml(myWebPermission1.ToXml())

Hinweise

Die FromXml -Methode rekonstruiert eine WebPermission aus einer XML-Codierung, die von der SecurityElement -Klasse definiert wird.

Verwenden Sie die ToXml -Methode zum XML-Codieren von WebPermission, einschließlich Zustandsinformationen.

Weitere Informationen

• ToXml()