Adding configuration file in a 3 tier architecture

1.Add a single app.config file in the UI Layer

<?xml version="1.0" encoding="utf-8" ?>

<configuration>

  <appSettings>

    <add key="Server1" value="10.250.1.32" />

    <add key=" Server 2" value="10.251.1.54" />

   

   </appSettings>

</configuration>

1.      Add the system.configuration dll refererence to the projetc where you want to access these values

using System.Configuration;

//access values using below code

String ipaddress= ConfigurationSettings.AppSettings.Get("MDT1");