ConfigurationManager.AppSettings

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Application Settings</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <h1>Application Settings</h1>
      Title:<asp:Label ID="lblTitle" runat="server" />
      <br />
      ISBN:<asp:Label ID="lblISBN" runat="server" />
    </div>
    </form>
</body>
</html>

File: Default.aspx.cs

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
       if (!IsPostBack)
       {
          string strTitle = ConfigurationManager.AppSettings["appTitle"];
          lblTitle.Text = strTitle;
          lblISBN.Text = ConfigurationManager.AppSettings["appISBN"];
       }
    }
}

File: Web.Config

<?xml version="1.0"?>
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
  <appSettings>
    <add key="appISBN" value="0-596-00487-7"/>
    <add key="appTitle" value="Programming ASP.NET"/>
  </appSettings>
  <system.web>
    <compilation debug="true"/>
    </system.web>
</configuration>

Related examples in the same category

1.	Set culture in the web.config
2.	Define database connection string in web.config
3.	This section sets the globalization settings of the application
4.	Get variables from global.asax
5.	Remove key from web.config
6.	web.config: default error page
7.	web.config: appSettings
8.	Indicate the error page in web.config
9.	web.config: redirect to a url for a status code
10.	web.config: custom error with default redirect and mode
11.	web.config: configure application-specific configuration settings
12.	web.config: customErrors
13.	web.config: session State
14.	web.config: Forms authentication
15.	web.config: authorization
16.	web.config: trace mode
17.	web.config: authentication mode
18.	Application-Level Trace Logging?
19.	Dynamic Debug Compilation
20.	Custom Error Messages
21.	Adding culture detection to the Web.config file
22.	Session State configuration
23.	HTTP Module configuration
24.	Storing a connection string
25.	Configuring Session State with a connection string
26.	specify custom provider assembly that inherits the SessionStateStoreProviderBase class
27.	The compilation section
28.	authentication section
29.	Forms Authentication
30.	configuration section settings
31.	URL Authorization in the web.config file with and attributes
32.	asterisk (*) represents all users and the question mark (?) represents anonymous users
33.	grant or deny access to the users or groups in regard to the HTTP methods
34.	File Authorization
35.	Set the security for a single file
36.	Locking-Down Configuration Settings
37.	ASP.NET Page Configuration
38.	Configuring ASP.NET Runtime Settings
39.	Default format for the section
40.	Custom configuration setting
41.	Set httpRuntime maxRequestLength='2048'
42.	compilation debug="true"
43.	Custom Configuration Sections
44.	Create custom section in Web.Config

ConfigurationManager.AppSettings : web.config « Development « ASP.Net

Related examples in the same category