分割table获取数据

  /// <summary>
    /// 从一个表中获取从第N条后的count条数据
    /// </summary>
    /// <param name="tb">原表</param>
    /// <param name="star">开始</param>
    /// <param name="count">共多少</param>
    /// <returns></returns>
    public DataTable GetTablesData(DataTable tb, int star, int count)
    {
        DataTable table1 = new DataTable();
        for (int i = 0; i < tb.Columns.Count; i++)
        {
            table1.Columns.Add(tb.Columns[i].ColumnName);
        }
        if (tb.Rows.Count > 0)
        {
            for (int i = star; i < (star + count); i++)
            {
                if (i > tb.Rows.Count)
                {
                    break;
                }
                table1.ImportRow(tb.Rows[i - 1]);
            }
        }
        return table1;
    }