把Datatable的数据循环导入XML中

导入内容视图：

代码：

string filePath = AppDomain.CurrentDomain.BaseDirectory + "orderDownload.xml";
                    if (File.Exists(filePath))
                    {
                        File.Delete(filePath);
                    }
                    //创建新的XML
                    XmlDocument xmlDoc = xmlop.LoadXml(filePath, "Root");
                    xmlop.DeleteXmlElement(filePath, xmlDoc, "Root", "", "", true);
                               
                    foreach (DataGridViewRow row in this.dgvDetails.Rows)
                    {
                        if (row.Cells["选择"].Value != null && row.Cells["选择"].Value.ToString().ToLower() == "true")
                        {
                            Order OrderModel = new Order();
                            OrderModel.AutoID = Convert.ToInt32(row.Cells["_AutoID"].Value.ToString().Trim());
                            OrderModel.Code = row.Cells["Code"].Value.ToString().Trim();
                            OrderModel.CustomerCode = row.Cells["CustomerCode"].Value.ToString().Trim();
                            OrderModel.CustomerName = row.Cells["CustomerName"].Value.ToString().Trim();
                            OrderModel.OrderTime = row.Cells["OrderTime"].Value.ToString().Trim();
                            OrderModel.Address = row.Cells["Address"].Value.ToString().Trim();
                            OrderModel._IsComplete = Convert.ToInt32(row.Cells["_IsComplete"].Value.ToString().Trim());
                            OrderModel.IsComplete = row.Cells["IsComplete"].Value.ToString().Trim();
                            OrderModel.Remark = row.Cells["Remark"].Value.ToString().Trim();

                            xmlop.AddXmlElement<Order>(filePath, xmlDoc, "Root", OrderModel);                          

                        }
                    }


/// <summary>
        /// 添加XML节点
        /// </summary>
        /// <typeparam name="T">对象</typeparam>
        /// <param name="filePath">文件路径</param>
        /// <param name="xmlDoc">XmlDocument对象</param>
        /// <param name="root_node">根节点</param>
        /// <param name="t">对象</param>
        public void AddXmlElement<T>(string filePath,XmlDocument xmlDoc,string root_node,T t)
            where T : new()
        {
            XmlNode xmlDocSelect = xmlDoc.SelectSingleNode(root_node);
            XmlElement xmlEle = xmlDoc.CreateElement(t.GetType().Name);
            //获取对象属性
            PropertyInfo[] properties = t.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public);
            //遍历对象的属性，并获取属性的值
            foreach (PropertyInfo item in properties)
            {
                string attName = item.Name;
                object value = item.GetValue(t,null);
                if (item.PropertyType.IsValueType || item.PropertyType.Name.StartsWith("String"))
                {
                    XmlAttribute xmlattr = xmlDoc.CreateAttribute(attName);
                    if (value == null)
                    {
                        xmlattr.Value = "";
                    }
                    else
                    {
                        xmlattr.Value = value.ToString();
                    }
                    xmlEle.Attributes.Append(xmlattr);
                }
            }
            xmlDocSelect.AppendChild(xmlEle);
            xmlDoc.Save(filePath);
        }