datagrid手动分页数据

    #region 进行分页处理


                ///返回页面源数据
                List<TbeampReportVMForMain> lstSource = db.Fetch<TbeampReportVMForMain>(sql); ;

                ///返回页面分页数据
                List<TbeampReportVMForMain> lstPage = new List<TbeampReportVMForMain>();

                //当前分页开始结束条数
                int start = Convert.ToInt32((page - 1) * rows);
                int end = Convert.ToInt32(start + rows) > lstSource.Count ? lstSource.Count : Convert.ToInt32(start + rows);

                if (start > end)
                {
                    start = start > end ? 0 : start;
                    end = Convert.ToInt32(rows);
                    page = 1;

                }
                for (int i = start; i < end; i++)
                {

                    lstPage.Add(lstSource[i]);

                }


                //返回分页对象
                Page<TbeampReportVMForMain> mainlist = new Page<TbeampReportVMForMain>()
                {
                    Items = lstPage,
                    CurrentPage = page,
                    ItemsPerPage = rows,
                    TotalItems = lstSource.Count,
                    TotalPages = lstSource.Count / rows

                };
                #endregion