Home > Developer > ASP

Repost Asp. To dynamically modify the setup items in Web.config in

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

Front Code

<%@ 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= "Song Body" >
<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>

CS page Code

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)
{
Open a file (assuming the web. Config in the root directory)
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 to Designer support-do not modify
The contents is 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);
}
}
}

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More