Retrieve AppSetting : appSettings « Configuration « ASP.NET Tutorial






  1. ASP.NET Tutorial
  2. Configuration
  3. appSettings
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="RetrieveAppSetting" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <ul>
      <li><asp:Label ID="appSettingValue" runat="server" /></li>
      <li><asp:Label ID="appSettingsExample" runat="server" Text="<%$ AppSettings:AnotherSetting %>" /></li>
      <li><asp:Label ID="connStr" runat="server" /></li>
      <li><asp:Label ID="connection" runat="server" Text="<%$ ConnectionStrings:sqlDb %>" /></li>
      <li><asp:Label ID="lblMyStuff" runat="server" /></li>
    </ul>
    <asp:SqlDataSource ID="ds" runat="server" ConnectionString="<%$ ConnectionSTrings:sqlDb %>"></asp:SqlDataSource>
    </div>
    </form>
</body>
</html>

File: Default.aspx.cs

using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;
using System.Web.Configuration;


public partial class RetrieveAppSetting : System.Web.UI.Page
{
  protected void Page_Load(object sender, EventArgs e)
  {
    appSettingValue.Text = ConfigurationManager.AppSettings["MySetting"];
    connStr.Text = ConfigurationManager.ConnectionStrings["sqlDb"].ConnectionString;
    lblMyStuff.Text = MySettings.Settings.Bar;
  }
}








16.3.appSettings
16.3.1.Storing Custom Settings in the web.config File
16.3.2.Retrieve values from the appSettings section either programmatically or declaratively.
16.3.3.Loading string from Web.config (C#)
16.3.4.Retrieve AppSetting
16.3.5.ConfigurationSettings.AppSettings