C# Retry

Retry.cs

public static class Retry
    {
        public static void Do(
            Action action,
            TimeSpan retryInterval,
            int retryCount = 3)
        {
            Do<object>(() =>
            {
                action();
                return null;
            }, retryInterval, retryCount);
        }

        public static T Do<T>(
            Func<T> action,
            TimeSpan retryInterval,
            int retryCount = 3)
        {
            var exceptions = new List<Exception>();

            for (var retry = 0; retry <= retryCount; retry++)
            {
                try
                {
                    return action();
                }
                catch (Exception ex)
                {
                    exceptions.Add(ex);
                    Thread.Sleep(retryInterval);
                }
            }

            throw new AggregateException(exceptions);
        }
    }

test.cs

//Example Usage

var client = new client();
var waitTime = 2;
var numberOfRetries = 3;

var result = Retry.Do(() => client.CallWebService(parameter1, parameter2)
                            , TimeSpan.FromSeconds(waitTime)
                            , numberOfRetries);