Question

What would be a good way to call the Execute method in batches of rulesObjs? Lets say the list have more than 10,000 objects and I want to call Execute with no more than 500 at a time.

    public static List<object> ExecutePolicy()
    {
        Policy policy = new Policy();

        List<object> rules = GetRules();

        object[] rulesObjs = rules.ToArray();

        // Call this method with array of object, but in batches.
        policy.Execute(rulesObjs);

        return rulesObjs.ToList();
    }

    private static List<object> GetRules()
    {
        // get the rules via some process
        return new List<object>();
    }
}

public sealed class Policy
{
    public void Execute(params object[] rules)
    {
        // Process rules...
    }
}

I do not have control over Execute() method.

Answer 1

List<object> rules = GetRules();
int batchSize = 500;
int currentBatch = 0;

while (currentBatch * batchSize < rules.Count)
{
    object[] nextBatch = rules.Skip(currentBatch * batchSize)
        .Take(batchSize).ToArray();
    //use batch
    currentBatch++;
}