System.Xml.XmlWriter.CreateWriterImpl C# (CSharp) Method

        private static XmlWriter CreateWriterImpl(TextWriter output, XmlWriterSettings settings) {
            Debug.Assert(output != null);
            Debug.Assert(settings != null);

            XmlWriter writer;

            switch (settings.OutputMethod) {
                case XmlOutputMethod.Xml:
                    if (settings.Indent) {
                        writer = new XmlEncodedRawTextWriterIndent(output, settings);
                    }
                    else {
                        writer = new XmlEncodedRawTextWriter(output, settings);
                    }
                    break;
                case XmlOutputMethod.Html:
                    if (settings.Indent) {
                        writer = new HtmlEncodedRawTextWriterIndent(output, settings);
                    }
                    else {
                        writer = new HtmlEncodedRawTextWriter(output, settings);
                    }
                    break;
                case XmlOutputMethod.Text:
                    writer = new TextEncodedRawTextWriter(output, settings);
                    break;
                case XmlOutputMethod.AutoDetect:
                    writer = new XmlAutoDetectWriter(output, settings);
                    break;
                default:
                    Debug.Assert(false, "Invalid XmlOutputMethod setting.");
                    return null;
            }

            // Wrap with Xslt/XQuery specific writer if needed; 
            // XmlOutputMethod.AutoDetect writer does this lazily when it creates the underlying Xml or Html writer.
            if (settings.OutputMethod != XmlOutputMethod.AutoDetect) {
                if (settings.IsQuerySpecific) {

                    // Create QueryOutputWriter if CData sections or DocType need to be tracked
                    writer = new QueryOutputWriter((XmlRawWriter)writer, settings);
                }
            }

            writer = new XmlWellFormedWriter(writer, settings);
            return writer;
        }