System.Xml.XmlSubtreeReader.ReadContentAsBase64 C# (CSharp) Méthode

        public override int ReadContentAsBase64( byte[] buffer, int index, int count ) {
            switch ( state ) {
                case State.Initial:
                case State.EndOfFile:
                case State.Closed:
                    return 0;

                case State.ClearNsAttributes:
                case State.PopNamespaceScope:
                    switch ( NodeType ) {
                        case XmlNodeType.Element:
                            throw CreateReadContentAsException( "ReadContentAsBase64" );
                        case XmlNodeType.EndElement:
                            return 0;
                        case XmlNodeType.Attribute:
                        case XmlNodeType.Text:
                            Debug.Assert( AttributeCount > 0 );
                            return reader.ReadContentAsBase64( buffer, index, count );
                        default:
                            Debug.Assert( false );
                            return 0;
                    }

                case State.Interactive:
                    state = State.ReadContentAsBase64;
                    goto case State.ReadContentAsBase64;

                case State.ReadContentAsBase64:
                    int read = reader.ReadContentAsBase64( buffer, index, count );
                    if ( read == 0 ) {
                        state = State.Interactive;
                        ProcessNamespaces();
                    }
                    return read;

                case State.ReadContentAsBinHex:
                case State.ReadElementContentAsBase64:
                case State.ReadElementContentAsBinHex:
                    throw new InvalidOperationException( Res.GetString( Res.Xml_MixingBinaryContentMethods ) );

                default:
                    Debug.Assert( false );
                    return 0;
            }
        }