Csharp/CSharp Tutorial/Development/AppSettingsReader

For programmatic access to .NET *.config files

using System;
using System.Configuration;
class MainClass
{
  static void Main(string[] args)
  {
    AppSettingsReader ar = new AppSettingsReader();
    Console.WriteLine("Here is your conn string");
    Console.WriteLine(ar.GetValue("appConStr", typeof(string)));
    Console.WriteLine();
    int numbOfTimes = (int)ar.GetValue("intValue", typeof(int));
    for(int i = 0; i < numbOfTimes; i++)
      Console.WriteLine("Yo!");
  }
}
/*
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings>
    <add key="appConStr" value="server=localhost;uid=sa;pwd=;database=Cars" />
    <add key="intValue" value="4" />
  </appSettings>
</configuration>
*/

Store ConnectionStringConfig solution

using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
    class Program
    {
        static void Main(string[] args)
        {
            foreach (ConnectionStringSettings css in ConfigurationManager.ConnectionStrings)
            {
                Console.WriteLine(css.Name);
                Console.WriteLine(css.ProviderName);
                Console.WriteLine(css.ConnectionString);
            }
            string sqlConnectString =ConfigurationManager.ConnectionStrings["AdventureWorks"].ConnectionString;
            SqlConnection connection = new SqlConnection(sqlConnectString);
            connection.Open(  );
            Console.WriteLine("Connection string state = {0}", connection.State);
            connection.Close(  );
            Console.WriteLine("Connection string state = {0}", connection.State);
        }
    }

Use AppSettingsReader to load settings from app.config

using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class MainClass {
  [STAThread]
  static void Main() 
  {
    System.Configuration.AppSettingsReader configurationAppSettings = new System.Configuration.AppSettingsReader();
    Console.WriteLine((string)(configurationAppSettings.GetValue("label1.Text", typeof(string))));
  }
}
/* app.config
<?xml version="1.0" encoding="Windows-1252"?>
<configuration>
  <appSettings>
    <!--   User application and configured property settings go here.-->
    <!--   Example: <add key="settingName" value="settingValue"/> -->
    <add key="label1.Text" value="label1" />
  </appSettings>
</configuration>
*/