DataTable添加行和列的方法

 DataTable添加行和列的方法：

  DataTable dtResult = new DataTable();                                                   定义dtResult
  DataColumn dc = null;                                                                           定义表的列
  dc = dtResult.Columns.Add("值", Type.GetType("System.String"));
  DataRow dr =dtResult.NewRow();
  dr["值"] = "最小值";
  dtResult.Rows.Add(dr);      

  DataRow dr1 = dtResult.NewRow();       

  dr1["值"] = "最大值";       

  dtResult.Rows.Add(dr1);       

  DataRow dr2 =dtResult.NewRow();       

  dr2["值"] = "平均值";       

  dtResult.Rows.Add(dr2);