获取DataTable前几条数据

#region 获取DataTable前几条数据
/// <summary>
/// 获取DataTable前几条数据
/// </summary>
/// <param name="TopItem">前N条数据</param>
/// <param name="oDT">源DataTable</param>
/// <returns></returns>
public static DataTable DtSelectTop(int TopItem, DataTable oDT)
{
    if (oDT.Rows.Count < TopItem) return oDT; 

    DataTable NewTable = oDT.Clone();
    DataRow[] rows = oDT.Select("1=1");
    for (int i = 0; i < TopItem; i++)
    {
        NewTable.ImportRow((DataRow)rows[i]);
    }
    return NewTable;
}
#endregion