在做网站时,想动态修改Web.Config,怎么改啊?高手给一段代码看看!刚学

sails1978 2004-07-20 01:34:19

如题!

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sails1978 2004-07-20

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第一次用，没想到回得这么快！谢谢！

dotnet3000 2004-07-20

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aspx
--------------------
<%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="XML_.WebForm1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>WebForm1</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<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:Button id="button1" style="Z-INDEX: 101; LEFT: 384px; POSITION: absolute; TOP: 216px" runat="server"
Text="Button"></asp:Button>
<asp:TextBox id="txtUserName" style="Z-INDEX: 102; LEFT: 200px; POSITION: absolute; TOP: 96px"
runat="server"></asp:TextBox>
<asp:TextBox id="txtPassword" style="Z-INDEX: 103; LEFT: 208px; POSITION: absolute; TOP: 144px"
runat="server"></asp:TextBox></FONT>
</form>
</body>
</HTML>
===================================
cs
------------------
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;
using System.Configuration;

namespace XML_
{
/// <summary>
/// WebForm1 的摘要说明。
/// </summary>
public class WebForm1 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.TextBox txtUserName;
protected System.Web.UI.WebControls.TextBox txtPassword;
protected System.Web.UI.WebControls.Button button1;

private void Page_Load(object sender, System.EventArgs e)
{

}

#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}

/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </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)
{
XmlDocument xDoc = new XmlDocument();
xDoc.Load(MapPath("")+"//Web.config");

XmlNode xNode;
XmlElement xElem1;
XmlElement xElem2;

xNode = xDoc.SelectSingleNode("//appSettings");

xElem1 = (XmlElement)xNode.SelectSingleNode("//add[@key='UserName']");
if ( xElem1 != null ) xElem1.SetAttribute("value",this.txtUserName.Text);
else
{
xElem2 = xDoc.CreateElement("add");
xElem2.SetAttribute("key","UserName");
xElem2.SetAttribute("value",this.txtUserName.Text);
xNode.AppendChild(xElem2);
}

xElem1 = (XmlElement)xNode.SelectSingleNode("//add[@key='Password']");
if ( xElem1 != null ) xElem1.SetAttribute("value",this.txtPassword.Text);
else
{
xElem2 = xDoc.CreateElement("add");
xElem2.SetAttribute("key","Password");
xElem2.SetAttribute("value",this.txtPassword.Text);
xNode.AppendChild(xElem2);
}
xDoc.Save(MapPath("")+"//Web.config");

this.button1.Enabled = false;

}
}
}

acewang 2004-07-20

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see:
Runtime Web.config / App.config Editing
http://www.eggheadcafe.com/articles/20030907.asp

大雨仔 2004-07-20

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现假设您有一个WebApplication名叫MyWebApp，虚拟路径为：http://localhost/MyWebApp，目录路径为：c:\inetpub\wwwroot\MyWebApp，其中配置文件web.config中的appSettings设置如下：

<configuration>
<appSettings>
<add key="test" value="runtime modify test"/>
</appSettings>

</configuration>

创建一个新的Console应用程序加入以下代码：

using System;
using System.Management;

namespace ConsoleApplication1
{
class Class1
{
[STAThread]
static void Main(string[] args)
{
ManagementObject appSet= new ManagementObject("root\\NetFrameworkV1:appSettings.Directive=\"add\",key=\"test\",Selector=\"file://C:/Inetpub/wwwroot/MyWebApp/web.config\"");
Console.WriteLine(string.Format("Old value:{0}",appSet["value"]));
appSet.SetPropertyValue("value","new value was set ok!");
appSet.Put();
Console.WriteLine("New value setted ok!");
Console.Read();
}
}
}

编译并运行，然后查看MyWebApp/web.config是否已被成功修改.
不知道对不对!