ASP.NET中动态修改web.config中的设置项目

技术2022-05-11 73

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 WebApplication1 {/// <summary>/// Summary description for WebForm1./// </summary>public class WebForm1 : System.Web.UI.Page{protected System.Web.UI.WebControls.TextBox TextBox1;protected System.Web.UI.WebControls.DropDownList DropDownList1;protected System.Web.UI.WebControls.Button Button1;　public WebForm1(){Page.Init += new System.EventHandler(Page_Init);}　private void Page_Load(object sender, System.EventArgs e){if(!Page.IsPostBack){//打开某文件(假设WEB。CONFIG在根目录中)string filename=Server.MapPath("/") + @"web.config";XmlDocument xmldoc= new XmlDocument();xmldoc.Load(filename);XmlNodeList topM=xmldoc.DocumentElement.ChildNodes;foreach(XmlElement element in topM){if(element.Name.ToLower()=="appsettings"){XmlNodeList _node=element.ChildNodes;if ( _node.Count >0 ){DropDownList1.Items.Clear();foreach(XmlElement el in _node){DropDownList1.Items.Add(el.Attributes["key"].InnerXml);}}}}}}private void Page_Init(object sender, EventArgs e){InitializeComponent();}Web Form Designer generated code　private void Button1_Click(object sender, System.EventArgs e){string filename=Server.MapPath("/") + @"web.config";XmlDocument xmldoc= new XmlDocument();xmldoc.Load(filename);　XmlNodeList topM=xmldoc.DocumentElement.ChildNodes;foreach(XmlElement element in topM){if(element.Name.ToLower()=="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["value"].Value=this.TextBox1.Text;}}}}}xmldoc.Save(filename);}}}

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