DataTable拆分分页

 public DataTable GetPagedTable(DataTable dt, int PageIndex, int PageSize)
        {
            if (PageIndex == 0)
            {
                return dt;
            }
            DataTable newdt = dt.Copy();
            newdt.Clear();
            int rowbegin = (PageIndex - 1) * PageSize;
            int rowend = PageIndex * PageSize;
            if (rowbegin >= dt.Rows.Count)
            {
                return newdt;
            }

            if (rowend > dt.Rows.Count)
            {
                rowend = dt.Rows.Count;
            }

            for (int i = rowbegin; i < rowend - 1; i++)
            {
                DataRow newdr = newdt.NewRow();
                DataRow dr = dt.Rows[i];
                foreach (DataColumn column in dt.Columns)
                {
                    newdr[column.ColumnName] = dr[column.ColumnName];
                }
               
            }
            return newdt;
        }