#region 获取DataTable前几条数据 /// 
 /// 获取DataTable前几条数据 /// 
 /// 前N条数据 /// 源DataTable /// 
      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