RetryRefactoring0.cs

const int RetryAttempts = 5;
const int RetryIntervalSeconds = 8;

static FooResults FooClientExecuteCommand(FooClient client, string command)
{
    FooResults results = null;
    for (var i = 0; i <= RetryAttempts; i++)
    {
        try
        {
            results = client.Execute(command);
            break;
        }
        catch (Exception e)
        {
            if (i == RetryAttempts)
            {
                throw new FooClientException("Message: '" + e.Message + "' Type: '" + e.GetType() + "'.");
            }

            Thread.Sleep(RetryIntervalSeconds*1000);
        }
    }
    return results;
}