Export (0) Print
Expand All

Transform Class

Represents the abstract base class from which all <Transform> elements that can be used in an XML digital signature derive.

Namespace:  System.Security.Cryptography.Xml
Assembly:  System.Security (in System.Security.dll)

[HostProtectionAttribute(SecurityAction.LinkDemand, MayLeakOnAbort = true)]
public abstract class Transform

The Transform type exposes the following members.

  NameDescription
Protected methodTransformInitializes a new instance of the Transform class.
Top

  NameDescription
Public propertyAlgorithmGets or sets the Uniform Resource Identifier (URI) that identifies the algorithm performed by the current transform.
Public propertyContextGets or sets an XmlElement object that represents the document context under which the current Transform object is running.
Public propertyInputTypesWhen overridden in a derived class, gets an array of types that are valid inputs to the LoadInput method of the current Transform object.
Public propertyOutputTypesWhen overridden in a derived class, gets an array of types that are possible outputs from the GetOutput methods of the current Transform object.
Public propertyPropagatedNamespacesGets or sets a Hashtable object that contains the namespaces that are propagated into the signature.
Public propertyResolverSets the current XmlResolver object.
Top

  NameDescription
Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetDigestedOutputWhen overridden in a derived class, returns the digest associated with a Transform object.
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Protected methodGetInnerXmlWhen overridden in a derived class, returns an XML representation of the parameters of the Transform object that are suitable to be included as subelements of an XMLDSIG <Transform> element.
Public methodGetOutput()When overridden in a derived class, returns the output of the current Transform object.
Public methodGetOutput(Type)When overridden in a derived class, returns the output of the current Transform object of the specified type.
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodGetXmlReturns the XML representation of the current Transform object.
Public methodLoadInnerXmlWhen overridden in a derived class, parses the specified XmlNodeList object as transform-specific content of a <Transform> element and configures the internal state of the current Transform object to match the <Transform> element.
Public methodLoadInputWhen overridden in a derived class, loads the specified input into the current Transform object.
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
Top

When performing XML signing and verification, the <Transform> element describes how the signer transformed the data object that was signed. The verifier of a document then uses the <Transform> element to transform the signed data in the same manner. If the verifier cannot transform the signed data in the same manner, the document cannot be verified.

Use a class that derives from the Transform class whenever you need to add one or more transform objects to an encrypted XML document or to a signed XML document.

For more information about the <Transform> element, see the XMLDSIG specification, which is available from the World Wide Web Consortium (W3C) at www.w3.org/TR/xmldsig-core/, or the XML encryption specification, which is available from the W3C at www.w3.org/TR/xmlenc-core/.

NoteNote

The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: MayLeakOnAbort. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

.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.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Community Additions

ADD
Show:
© 2014 Microsoft