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WebPermission::FromXml Method

Reconstructs a WebPermission from an XML encoding.

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

public:
virtual void FromXml(
	SecurityElement^ securityElement
) override

Parameters

securityElement
Type: System.Security::SecurityElement

The XML encoding from which to reconstruct the WebPermission.

Implements

ISecurityEncodable::FromXml(SecurityElement)

ExceptionCondition
ArgumentNullException

The securityElement parameter is null.

ArgumentException

securityElement is not a permission element for this type.

The FromXml method reconstructs a WebPermission from an XML encoding that is defined by the SecurityElement class.

Use the ToXml method to XML-encode the WebPermission, including state information.

The following example creates a System.Security::SecurityElement, populates its attributes, and uses FromXml to transfer this information to an instance of WebPermission.

// 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(S"Attributes and Values of the WebPermission are :");
myWebPermission1->ToXml();

// 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());

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

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

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