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;
}