System.Xml.XmlLoader.LoadDeclarationNode C# (CSharp) Méthode

        private XmlDeclaration LoadDeclarationNode()
        {
            Debug.Assert(_reader.NodeType == XmlNodeType.XmlDeclaration);

            //parse data
            string version = null;
            string encoding = null;
            string standalone = null;

            // Try first to use the reader to get the xml decl "attributes". Since not all readers are required to support this, it is possible to have
            // implementations that do nothing
            while (_reader.MoveToNextAttribute())
            {
                switch (_reader.Name)
                {
                    case "version":
                        version = _reader.Value;
                        break;
                    case "encoding":
                        encoding = _reader.Value;
                        break;
                    case "standalone":
                        standalone = _reader.Value;
                        break;
                    default:
                        Debug.Fail("Unknown reader name");
                        break;
                }
            }

            // For readers that do not break xml decl into attributes, we must parse the xml decl ourselves. We use version attr, b/c xml decl MUST contain
            // at least version attr, so if the reader implements them as attr, then version must be present
            if (version == null)
                ParseXmlDeclarationValue(_reader.Value, out version, out encoding, out standalone);

            return _doc.CreateXmlDeclaration(version, encoding, standalone);
        }