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CSharp · Console

/Program.cs

using System;
using Polly;
using Polly.Fallback;

namespace MatchExceptionType
{
    public class Program
    {
        public static void Main(string[] args)
        {
            Type exceptionType = Type.GetType("System.DivideByZeroException");
			
            FallbackPolicy<string> policy = Policy<String>
				.Handle<Exception>(e => exceptionType.IsAssignableFrom(e.GetType()))
				.Fallback(e => "Policy handled a DivideByZeroException");

			String result = policy.Execute(() => { throw new DivideByZeroException();});
            Console.WriteLine(result);
			
			try {
			    string discarded = policy.Execute(() => { throw new OverflowException();}); // Policy won't handle this.
			}
			catch
			{
				Console.WriteLine("As expected, Policy didn't handle an OverflowException.");
			}
				
        }
    }
}