ASP.NET程序中动态修改web.config中的设置项目(转)
前台页面代码 〈%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="WebApplication1.WebForm1" %〉 〈!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" 〉 〈HTML〉 〈HEAD〉 〈meta name="GENERATOR" Content="Microsoft Visual Studio 7.0"〉 〈meta name="CODE_LANGUAGE" Content="C#"〉 〈meta name="vs_defaultClientScript" content="JavaScript (ECMAScript)"〉 〈meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"〉 〈/HEAD〉 〈body MS_POSITIONING="GridLayout"〉 〈form id="Form1" method="post" runat="server"〉 〈FONT face="宋体"〉 〈asp:TextBox id="TextBox1" style="Z-INDEX: 101;; LEFT: 164px;; POSITION: absolute;; TOP: 190px" runat="server" Width="204px" Height="25px"〉〈/asp:TextBox〉 〈asp:Button id="Button1" style="Z-INDEX: 102;; LEFT: 386px;; POSITION: absolute;; TOP: 188px" runat="server" Width="78px" Height="25px" Text="Button"〉〈/asp:Button〉 〈asp:DropDownList id="DropDownList1" style="Z-INDEX: 103;; LEFT: 29px;; POSITION: absolute;; TOP: 192px" runat="server" Width="130px" Height="22px"〉〈/asp:DropDownList〉 〈/FONT〉 〈/form〉 〈/body〉 〈/HTML〉
后台CS代码
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();; }
#region Web Form Designer generated code /// 〈summary〉 /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// 〈/summary〉 private void InitializeComponent() { this.Button1.Click += new System.EventHandler(this.Button1_Click);; this.Load += new System.EventHandler(this.Page_Load);;
} #endregion
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);; }
|