static void Main(string[] args)
{
LogLevelHandlerBase loglevelFATAL = new LogLevelFatal();
LogLevelHandlerBase loglevelERROR = new LogLevelError();
LogLevelHandlerBase loglevelINFO = new LogLevelInfo();
LogLevelHandlerBase loglevelDEBUG = new LogLevelDebug();
LogLevelHandlerBase chainRoot = loglevelFATAL;
loglevelFATAL.SetNext(loglevelERROR);
loglevelERROR.SetNext(loglevelINFO);
loglevelINFO.SetNext(loglevelDEBUG);
chainRoot.Log(4, "Debug");
Console.WriteLine("==================");
chainRoot.Log(2, "Error");
Console.WriteLine("==================");
Console.WriteLine("==================");
LogLevelHandlerBase ReverschainRoot = loglevelDEBUG;
loglevelDEBUG.SetNext(loglevelINFO);
loglevelINFO.SetNext(loglevelERROR);
loglevelERROR.SetNext(loglevelFATAL);
ReverschainRoot.Log(4, "Debug");
Console.WriteLine("==================");
ReverschainRoot.Log(2, "Error");
Console.WriteLine("==================");
Console.WriteLine("==================");
}
public void SetNext(LogLevelHandlerBase next)
{
this.next = next;
}