System.Net.ServicePointManager.Expect100Continue = false;
System.Net.ServicePointManager.CheckCertificateRevocationList = false;
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(sURL);
myRequest.Proxy = new WebProxy();

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <configSections>
    </configSections>
    <connectionStrings>
        <add name=""
            connectionString=""
            providerName="System.Data.SqlClient" />
    </connectionStrings>

  <appSettings>

    <add key="flag1" value="abcdefg" />
    <add key="LogPath" value="log" />

  </appSettings>

</configuration>

string connectionString = String.Format("{0}",
    ConfigurationManager.ConnectionStrings["RMLS_ORConnectionString"]
);
System.Console.Write(
    String.Format("Connection String={0}\n", connectionString)
);

string flag1= String.Format("{0}",
    ConfigurationManager.AppSettings["flag1"]
);
System.Console.Write(String.Format("flag1={0}\n",flag1));