SignedXml.LoadXml(XmlElement) Metoda

Definice

Obor názvů:

System.Security.Cryptography.Xml

Sestavení:

System.Security.dll

Načte SignedXml stav z elementu 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)

Parametry

value

XmlElement

Element XML pro načtení SignedXml stavu z.

Výjimky

ArgumentNullException

Parametr value je null.

CryptographicException

Parametr value neobsahuje platnou SignatureValue vlastnost.

nebo

Parametr value neobsahuje platnou SignedInfo vlastnost.

Příklady

Následující příklad kódu ukazuje, jak použít metodu LoadXml k ověření dokumentu 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