Example on how to read application settings configuration

gistfile1.cs

// NB you should probably use SixPack instead...

// On App.config:
/*
<configuration>
  <configSections>
    <section name="snmpPoller" type="Tracing.Service.Snmp.SnmpPollerSettings,Tracing.Service.Snmp"/>
  </configSections>
  <snmpPoller pollingInterval="4000" timeout="3000">
    <variables>
      <!--
      sysUpTime OBJECT-TYPE (from SNMPv2-MIB)
          SYNTAX      TimeTicks
          MAX-ACCESS  read-only
          STATUS      current
          DESCRIPTION
                  "The time (in hundredths of a second) since the
                  network management portion of the system was last
                  re-initialized."
      -->
      <variable name="sysUpTime" oid="1.3.6.1.2.1.1.3.0"/>
    </variables>
    <nodes>
      <node address="10.2.3.1" community="public" variables="sysUpTime"/>
      <node address="10.2.3.2" community="public" variables="sysUpTime"/>
    </nodes>
  </snmpPoller>
*/

// On C# file (use as SnmpPollerSettings.Settings):

using System.Configuration;

namespace Tracing.Service.Snmp
{
    public class SnmpPollerSettings : ConfigurationSection
    {
        public readonly static SnmpPollerSettings Settings = ConfigurationManager.GetSection("snmpPoller") as SnmpPollerSettings;

        public class VariableElement : ConfigurationElement
        {
            [ConfigurationProperty("name", IsRequired = true)]
            public string Name
            {
                get { return (string)base["name"]; }
            }

            [ConfigurationProperty("oid", IsRequired = true)]
            public string Oid
            {
                get { return (string)base["oid"]; }
            }
        }

        public class VariablesCollection : ConfigurationElementCollection<string, VariableElement>
        {
            public override ConfigurationElementCollectionType CollectionType { get { return ConfigurationElementCollectionType.BasicMap; } }
            protected override string ElementName { get { return "variable"; } }
            protected override string GetElementKey(VariableElement element) { return element.Name; }
        }  

        public class NodeElement : ConfigurationElement
        {
            [ConfigurationProperty("address", IsRequired = true)]
            public string Address
            {
                get { return (string)base["address"]; }
            }

            [ConfigurationProperty("community", IsRequired = true)]
            public string Community
            {
                get { return (string)base["community"]; }
            }

            [ConfigurationProperty("variables", IsRequired = true)]
            public string Variables
            {
                get { return (string)base["variables"]; }
            }
        }

        public class NodesCollection : ConfigurationElementCollection<string, NodeElement>
        {
            public override ConfigurationElementCollectionType CollectionType { get { return ConfigurationElementCollectionType.BasicMap; } }
            protected override string ElementName { get { return "node"; } }
            protected override string GetElementKey(NodeElement element) { return element.Address; }
        }  

        [ConfigurationProperty("pollingInterval", IsRequired = true)]
        public int PollingInterval
        {
            get { return (int)base["pollingInterval"]; }
        }

        [ConfigurationProperty("timeout", IsRequired = true)]
        public int Timeout
        {
            get { return (int)base["timeout"]; }
        }

        [ConfigurationProperty("variables", IsRequired = true)]
        public VariablesCollection Variables
        {
            get
            {
                return (VariablesCollection)base["variables"];
            }
        }

        [ConfigurationProperty("nodes", IsRequired = true)]
        public NodesCollection Nodes
        {
            get
            {
                return (NodesCollection)base["nodes"];
            }
        }
    }
}