SignedXml.LoadXml(XmlElement) Méthode

Définition

Espace de noms:

System.Security.Cryptography.Xml

Assembly:

System.Security.dll

Charge un SignedXml état à partir d’un élément XML.

public:
 void LoadXml(System::Xml::XmlElement ^ value);

public void LoadXml(System.Xml.XmlElement value);

member this.LoadXml : System.Xml.XmlElement -> unit

Public Sub LoadXml (value As XmlElement)

Paramètres

value

XmlElement

Élément XML à partir duquel charger l’état SignedXml .

Exceptions

ArgumentNullException

Le value paramètre est null.

CryptographicException

Le value paramètre ne contient pas de propriété valide SignatureValue .

-ou-

Le value paramètre ne contient pas de propriété valide SignedInfo .

Exemples

L’exemple de code suivant montre comment utiliser la LoadXml méthode pour vérifier un document XML.

// Verify the signature of an XML file and return the result.
public static Boolean VerifyDetachedSignature(string XmlSigFileName)
{	
    // Create a new XML document.
    XmlDocument xmlDocument = new XmlDocument();

    // Load the passed XML file into the document.
    xmlDocument.Load(XmlSigFileName);

    // Create a new SignedXMl object.
    SignedXml signedXml = new SignedXml();

    // Find the "Signature" node and create a new
    // XmlNodeList object.
    XmlNodeList nodeList = xmlDocument.GetElementsByTagName("Signature");

    // Load the signature node.
    signedXml.LoadXml((XmlElement)nodeList[0]);

    // Check the signature and return the result.
    return signedXml.CheckSignature();
}

' Verify the signature of an XML file and return the result.
Public Shared Function VerifyDetachedSignature(XmlSigFileName As String) As [Boolean]
   ' Create a new XML document.
   Dim xmlDocument As New XmlDocument()
   
   ' Load the passed XML file into the document.
   xmlDocument.Load(XmlSigFileName)
   
   ' Create a new SignedXMl object.
   Dim signedXml As New SignedXml()
   
   ' Find the "Signature" node and create a new
   ' XmlNodeList object.
   Dim nodeList As XmlNodeList = xmlDocument.GetElementsByTagName("Signature")
   
   ' Load the signature node.
   signedXml.LoadXml(CType(nodeList(0), XmlElement))
   
   ' Check the signature and return the result.
   Return signedXml.CheckSignature()
End Function