System.Xml.Xsl.XsltOld.Processor.ElementValueWithoutWS C# (CSharp) Method

        private void ElementValueWithoutWS(XPathNavigator nav, StringBuilder builder) {
            Debug.Assert(nav.NodeType == XPathNodeType.Element);
            bool preserve = this.Stylesheet.PreserveWhiteSpace(this, nav);
            if (nav.MoveToFirstChild()) {
                do {
                    switch (nav.NodeType) {
                    case XPathNodeType.Text :
                    case XPathNodeType.SignificantWhitespace :
                        builder.Append(nav.Value);
                        break;
                    case XPathNodeType.Whitespace :
                        if (preserve) {
                            builder.Append(nav.Value);
                        }
                        break;
                    case XPathNodeType.Element :
                        ElementValueWithoutWS(nav, builder);
                        break;
                    }
                }while (nav.MoveToNext());
                nav.MoveToParent();
            }
        }