1public void AddImport(string importString)
2    {
3        XmlDocument ownerDocument = this._codeSnippetNode.OwnerDocument;
4        XmlElement newChild = ownerDocument.CreateElement("Import", this._nsMgr.LookupNamespace("ns1"));
5        newChild.InnerText = importString;
6        XmlNode node = this._codeSnippetNode.SelectSingleNode("descendant::ns1:Snippet//ns1:Imports", this._nsMgr);
7        if (node == null)
8        {
9            XmlNode node2 = this._codeSnippetNode.SelectSingleNode("descendant::ns1:Snippet", this._nsMgr);
10            node = ownerDocument.CreateElement("Imports", this._nsMgr.LookupNamespace("ns1"));
11            node = node2.PrependChild(node);
12        }
13        node.AppendChild(newChild);
14        this._imports.Add(importString);
15    }