A config sample for ConfigurationSection

Code
public class EditorFontData : ConfigurationSection 
    {        

        public EditorFontData()
        {          
        }

        [ConfigurationProperty("name")]
        public string Name 
        {
            get { return (string)this["name"]; }
            set{ this["name"] = value; }
        }

        [ConfigurationProperty("size")]
        public float Size 
        {
            get{ return (float)this["size"]; }
            set{ this["size"] = value; }
        }

        [ConfigurationProperty("style")]
        public int Style 
        {
            get { return (int)this["style"]; }
            set{ this["style"] = value; }
        } 

        public override string ToString() 
        {
            StringBuilder sb = new StringBuilder();
            sb.AppendFormat("Name = {0}; Size = {1}; Style = {2}", Name, Size.ToString(), Style.ToString());

            return sb.ToString();
        }
    }

 EditorFontData configData = ConfigurationManager.GetSection("EditorSettings") as EditorFontData;

<configuration>
  <configSections>
    <section name="EditorSettings" type="ConfigurationMigrationQuickStart.EditorFontData, ConfigurationMigrationQuickStart, Version=1.1.0.0, Culture=neutral, PublicKeyToken=null" />
  </configSections>
  <EditorSettings name="Verdana" size="24" style="2" />
</configuration>