static connSetting : System.Configuration.ConnectionStringSettings = ConfigurationManager.ConnectionStrings["FlowServerConnectionString"];

namespace Flow_WEB_Nemerle.Config
{
  public class FlowWebProvidersSection : ConfigurationSection
  {

    [ConfigurationProperty("IzmListProviderName", IsRequired = true)]
    public IzmListProviderName : string
    {
        get { (this["IzmListProviderName"] :> string) }
        set { this["IzmListProviderName"] = value; }
    }

  public class ProviderSettingsValidation : ConfigurationValidatorBase
  {
    public override CanValidate(typex : Type) : bool
    {
         typeof(ProviderSettingsCollection).Equals(typex)
    }