System.Xml.Xsl.Runtime.XmlQueryOutput.WriteNamespaceDeclarationUnchecked C# (CSharp) Method

        public void WriteNamespaceDeclarationUnchecked(string prefix, string ns) {
            Debug.Assert(prefix != null && ns != null);
            Debug.Assert(this.xstate == XmlState.EnumAttrs, "WriteNamespaceDeclaration cannot be called in the " + this.xstate + " state.");

            // xmlns:foo="" is illegal
            Debug.Assert(prefix.Length == 0 || ns.Length != 0);

            if (this.depth == 0) {
                // At top-level, so write namespace declaration directly to output
                Writer.WriteNamespaceDeclaration(prefix, ns);
                return;
            }

            if (this.nsmgr == null) {
                // If namespace manager has no namespaces, then xmlns="" is in scope by default
                if (ns.Length == 0 && prefix.Length == 0)
                    return;

                this.nsmgr = new XmlNamespaceManager(this.runtime.NameTable);
                this.nsmgr.PushScope();
            }

            if (this.nsmgr.LookupNamespace(prefix) != ns)
                AddNamespace(prefix, ns);
        }