根据xsd生成xml文档

根据xsd生成xml文档(3)             XmlSchemaChoice choice = sourceXsd as XmlSchemaChoice;
            decimal min = choice.MinOccurs;
            foreach (XmlSchemaObject item in choice.Items)
            {
                if (item.GetType() == typeof(XmlSchemaElement))
                {
                    string name = ((XmlSchemaElement)item).Name;
                    if (titles.ContainsKey(name))
                    {
                        XmlElement element = sourceXml.CreateElement(name);
                       // element.InnerText = ((Excel.Range)st.Cells[rowIndex, (int)titles[name]]).Value2.ToString();
                        element.InnerText = values[(int)titles[name]];
                        sourceNd.AppendChild(element);
                    }

                }