‘Malformed Reference Element’ when adding a reference based on an Id attribute with SignedXml class

by

The approach we used was to subclass System.Security.Cryptography.Xml.SignedXml class…

public class SignedXmlWithId : SignedXml
{
    public SignedXmlWithId(XmlDocument xml) : base(xml)
    {
    }

    public SignedXmlWithId(XmlElement xmlElement) 
        : base(xmlElement)
    {       
    }

    public override XmlElement GetIdElement(XmlDocument doc, string id)
    {
        // check to see if it's a standard ID reference
        XmlElement idElem = base.GetIdElement(doc, id);

        if (idElem == null)
        {
            XmlNamespaceManager nsManager = new XmlNamespaceManager(doc.NameTable);
            nsManager.AddNamespace("wsu", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd");

            idElem = doc.SelectSingleNode("//*[@wsu:Id=\"" + id + "\"]", nsManager) as XmlElement;
        }

        return idElem;
    }
}

More Related Contents:

  1. SAML Assertion in a XML using C#
  2. Read Soap Message using C#
  3. Encrypt and decrypt a string in C#? [closed]
  4. Memory Leak using StreamReader and XmlSerializer
  5. Proper way to implement IXmlSerializable?
  6. How to serialize/deserialize to `Dictionary` from custom XML not using XElement?
  7. Padding is invalid and cannot be removed?
  8. Dynamically generate LINQ queries
  9. How do you remove invalid hexadecimal characters from an XML-based data source prior to constructing an XmlReader or XPathDocument that uses the data?
  10. Apostrophe (‘) in XPath query
  11. Set up dot instead of comma in numeric values
  12. Create XML Nodes based on XPath?
  13. How to decode string to XML string in C#
  14. Converting XML to a dynamic C# object
  15. Reading embedded XML file c#
  16. Entity Framework with XML Files [closed]
  17. How to remove an xml element from file?
  18. Error Deserializing Xml to Object – xmlns=” was not expected
  19. XmlTextReader vs. XDocument
  20. FileMode.Open and FileMode.OpenOrCreate difference when file exists? c# bug?
  21. Generating XML file using XSD file
  22. parsing XML with ampersand
  23. Serializing Lists of Classes to XML
  24. Check well-formed XML without a try/catch?
  25. XmlSerializer Performance Issue when Specifying XmlRootAttribute
  26. How can I remove empty xmlns attribute from node created by XElement
  27. Reading specific XML elements from XML file
  28. Parsing SVG “path” elements with C# – are there libraries out there to do this? [closed]
  29. How to remove whitespace from an XmlDocument
  30. XSLT transformation on Large XML files with C#

Leave a Comment