对WEB.Config文件进行（读写操作）

技术2022-05-11 46

using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Drawing; using System.Web; using System.Web.SessionState; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; using System.Xml; namespace simx { /// <summary> /// WebForm1 的摘要说明。 /// </summary> public class WebForm1 : System.Web.UI.Page { private void Page_Load(object sender, System.EventArgs e) { if(!Page.IsPostBack) { read(); } } public void read() //读Web.config { string filename=Server.MapPath("")+@"Web.config"; XmlDocument xmldoc=new XmlDocument(); xmldoc.Load(filename); XmlNodeList topM=xmldoc.DocumentElement.ChildNodes; foreach(XmlElement element in topM) { //判断是否存在<appSettings>配置节 if(element.Name=="appSettings") { XmlNodeList node=element.ChildNodes; if(node.Count>0) { DropDownList1.Items.Clear(); foreach(XmlElement el in node) { DropDownList1.Items.Add(el.Attributes["key"].InnerXml); } } } } } public void write() //写Web.config { string filename=Server.MapPath("")+@"Web.config"; XmlDocument xmldoc=new XmlDocument(); xmldoc.Load(filename); XmlNodeList topM=xmldoc.DocumentElement.ChildNodes; foreach(XmlElement element in topM) { //判断是否存在<appsettings>配置节 if(element.Name=="appsettings") { XmlNodeList node=element.ChildNodes; if(node.Count>0) { foreach(XmlElement el in node) { if(el.Attributes["key"].InnerXml.ToLower()==this.DropDownList1.SelectedItem.Value.ToLower()) { el.Attributes["key"].Value=this.TextBox1.Text; } } } } } } Web 窗体设计器生成的代码 }}

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