C# XML读写代码

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主要为替代INI的读写,此示例为保存datagridview的columns的部分设置

XML文件格式为:

<?xml version="1.0" encoding="utf-8"?>

</Columns>

读写示例代码如下:

/// <summary>        /// 读XML        /// </summary>        public void RXml()        {            if (File.Exists(Sys_Xml))            {                XmlDocument xdoc = new XmlDocument();                xdoc.Load(Sys_Xml);                XmlNode xn= xdoc.SelectSingleNode("Columns");                XmlNodeList xnl = xn.ChildNodes;                foreach (XmlNode xnd in xnl)                {                    int idx;                    int.TryParse(xnd.Attributes["Index"].Value,out idx);                    if (idx <= dataGridView1.Columns.Count)                    {                        bool vis;                        bool.TryParse(xnd.Attributes["Visiable"].Value,out vis);                        dataGridView1.Columns[idx].Visible = vis;                        dataGridView1.Columns[idx].HeaderText = xnd.Attributes["HeadText"].Value;                        int wid;                                                int.TryParse(xnd.Attributes["Width"].Value,out wid);                        dataGridView1.Columns[idx].Width=wid;                    }                }            }        }        /// <summary>        /// 写XML        /// </summary>        public void WXml()        {            XmlDocument xdoc = new XmlDocument();            //创建类型声明节点              XmlNode node = xdoc.CreateXmlDeclaration("1.0", "utf-8", "");            xdoc.AppendChild(node);                            //创建根节点                XmlNode root = xdoc.CreateElement("Columns");            xdoc.AppendChild(root);            foreach (DataGridViewColumn dc in dataGridView1.Columns)            {                XmlElement xnode = xdoc.CreateElement("Columns" + dc.Index.ToString());                xnode.SetAttribute("Index", dc.Index.ToString());                xnode.SetAttribute("Visiable", dc.Visible.ToString());                xnode.SetAttribute("HeadText", dc.HeaderText);                xnode.SetAttribute("Width", dc.Width.ToString());                root.AppendChild(xnode);            }            xdoc.Save(Sys_Xml);        }

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