net c# 读写XML 操作

     添加引用 using System.IO;
using System.Xml;
     
      //获取根目录 bin\Debug目录地址
     public static readonly string SYS_CONFIGURE_URL = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase;

//获取xml文件地址
     private static string fileName = Constants.SYS_CONFIGURE_URL + "\\ConfigurePrint.xml";


读取XML

if (File.Exists(fileName))
{
ds = new DataSet();
ds.ReadXml(fileName);

if (ds.Tables[0].Rows.Count > 0)
{
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
this.cboProductName.Items.Add(ds.Tables[0].Rows[i]["PRODUCTNAME"].ToString());
}

this.cboProductName.SelectedIndex = 0;

}
}

写XML 方法一  直接覆盖原有的。

if (!File.Exists(fileName))
{
FileStream fs = File.Create(fileName);
fs.Close();
}

XmlDocument xDoc = new XmlDocument();
XmlTextWriter xw = new XmlTextWriter(fileName, Encoding.Default);
xDoc.WriteTo(xw);

xw.WriteStartElement("WEBPROXY");

xw.WriteAttributeString("RICARIOUS", this.chkRicarious.Checked.ToString());
xw.WriteAttributeString("ADDRESS", this.userIPControl1.Text);

xw.WriteAttributeString("PORT", this.txtPort.Text);
xw.WriteAttributeString("VALIDATE", this.chkValidate.Checked.ToString());

xw.WriteAttributeString("USERNAME", this.txtUserName.Text);
xw.WriteAttributeString("PASSWORD", this.txtPassword.Text);

if (this.radLAN.Checked)
xw.WriteAttributeString("NETWORK", "2");
else
xw.WriteAttributeString("NETWORK","1");

xw.WriteEndElement();