exception-for.cs

class Program
{
    static void Main(string[] args)
    {
        var error = new System.Exception("1", new System.Exception("2", new System.Exception("3")));

        for (var exception = error; exception != null; exception = exception.InnerException)
        {
            Console.Out.WriteLine("exeption " + exception.Message);
        }
        Console.ReadLine();
    }
}