c#分页增加顺序编号方法代码

  public List<TModel<T>> ConvertList<T>(int pg, int pagesize, List<T> list,string kidName = "KID")
        {
            if (pg < 1)
            {
                pg = 1;
            }
            List<TModel<T>> models = new List<TModel<T>>();
            int n = 0;
            int x = pg * pagesize;
            if (list.Count < pagesize)
            {
                x = pg * pagesize - pagesize + list.Count;
            }
            for (int i = (pg - 1) * pagesize; i < x; i++)
            {
                TModel<T> model = new TModel<T>();
                int m = i + 1;
                var t = list[n].GetType().GetProperty(kidName);
                if(t != null)
                {
                    t.SetValue(list[n], m, null);
                }
                model.keyid = m;
                model.propert = list[n];
                models.Add(model);
                n++;
            }
            return models;
        }

        public List<T> ConvertList2<T>(int pg, int pagesize, List<T> list, string kidName = "KID")
        {
            if (pg < 1)
            {
                pg = 1;
            }
            List<T> models = new List<T>();
            int n = 0;
            int x = pg * pagesize;
            if (list.Count < pagesize)
            {
                x = pg * pagesize - pagesize + list.Count;
            }
            for (int i = (pg - 1) * pagesize; i < x; i++)
            {
                int m = i + 1;
                var t = list[n].GetType().GetProperty(kidName);
                if (t != null)
                {
                    t.SetValue(list[n], m, null);
                }
                models.Add(list[n]);
                n++;
            }
            return models;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="pg">当前页码</param>
        /// <param name="pagesize">每页条数</param>
        /// <param name="list">集合数据</param>
        /// <param name="pagenum">数据总数</param>
        /// <param name="kidName">自增列名称</param>
        /// <returns></returns>
        public List<TModel<T>> ResvertList<T>(int pg, int pagesize, List<T> list, int pagenum, string kidName = "KID")
        {
            if (pg < 1)
            {
                pg = 1;
            }
            List<TModel<T>> models = new List<TModel<T>>();
            int n = 0;
            int x = pg * pagesize;
            if (list.Count < pagesize)
            {
                x = pg * pagesize - pagesize + list.Count;
            }
            for (int i = (pg - 1) * pagesize; i < x; i++)
            {
                TModel<T> model = new TModel<T>();
                int c = pagenum - i;
                var t = list[n].GetType().GetProperty(kidName);
                if (t != null)
                {
                    t.SetValue(list[n], c, null);
                }
                model.keyid = c;
                model.propert = list[n];
                models.Add(model);
                n++;
            }
            return models;
        }

        public List<T> ResvertList2<T>(int pg, int pagesize, List<T> list, int pagenum, string kidName = "KID")
        {
            if (pg < 1)
            {
                pg = 1;
            }
            List<T> models = new List<T>();
            int n = 0;
            int x = pg * pagesize;
            if (list.Count < pagesize)
            {
                x = pg * pagesize - pagesize + list.Count;
            }
            for (int i = (pg - 1) * pagesize; i < x; i++)
            {
                TModel<T> model = new TModel<T>();
                int c = pagenum - i;
                var t = list[n].GetType().GetProperty(kidName);
                if (t != null)
                {
                    t.SetValue(list[n], c, null);
                }
                models.Add(list[n]);
                n++;
            }
            return models;
        }

public class TModel<T>
        {
            public int keyid { get; set; }
            public T propert { get; set; }
        }