/// <summary>

/// 拆分List

/// </summary>

/// <typeparam name="T"></typeparam>

public class ListSplitter<T>

{

    public static List<List<T>> SplitList(List<T> list, int chunkSize)

    {

        var result = new List<List<T>>();

        for (int i = 0; i < list.Count; i += chunkSize)

        {

            result.Add(list.GetRange(i, Math.Min(chunkSize, list.Count - i)));

        }

        return result;

    }

}

//List拆分,每次5000條

int chunkSize = 5000;

List<List<Rule>> splittedLists = ListSplitter<Rule>.SplitList(list, chunkSize);

foreach (var splitList in splittedLists)

{

}