xml 操作（动态添加 property属性 其他节点同理）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Linq;
using System.Xml.Linq;
using System.Xml;
using System.Windows.Forms;

namespace ConsoleApplication27
{
class Program
{
[STAThread]
static void Main(string[] args)
{
var folderPath = AppDomain.CurrentDomain.BaseDirectory + "..\\..\\Mapping";
FolderBrowserDialog fbd = new FolderBrowserDialog();
if (fbd.ShowDialog() == DialogResult.OK)
{
folderPath = fbd.SelectedPath;
}

var files = System.IO.Directory.GetFiles(folderPath);

foreach (string file in files)
{

if (!file.Contains(".hbm.xml")) { continue; }
var path = file; //AppDomain.CurrentDomain.BaseDirectory + "..\\..\\Mapping\\PosPositionProductMapping.hbm.xml";
XmlDocument doc = new XmlDocument();
doc.Load(path);
var plist = doc.GetElementsByTagName("property");

bool find1 = false;
bool find2 = false;
foreach (XmlNode item in plist)
{

if (find1 == false)
find1 = item.Attributes["column"].Value.ToLower().Contains("CREATED_EMPLOYEE_NAME".ToLower());
if (find2 == false)
find2 = item.Attributes["column"].Value.ToLower().Contains("CREATED_EMPLOYEE_ID".ToLower());

}
var cls = doc.GetElementsByTagName("class")[0];
if (find1 == false)
{
var e1 = doc.CreateElement("property", doc.DocumentElement.NamespaceURI);
e1.SetAttribute("column", "CREATED_EMPLOYEE_NAME");
e1.SetAttribute("name", "CreatedEmployeeName");
e1.SetAttribute("update", "false");
cls.AppendChild(e1);
}
if (find2 == false)
{
var e2 = doc.CreateElement("property", doc.DocumentElement.NamespaceURI);
e2.SetAttribute("column", "CREATED_EMPLOYEE_ID");
e2.SetAttribute("name", "CreatedEmployeeId");
e2.SetAttribute("update", "false");
cls.AppendChild(e2);
}
doc.Save(path);
MessageBox.Show("提示", "成功");
}

}
}
}