关于dataTable上移或下移

//记录上移或下移

        private void ReccordData(DataTable dt, string TypeValue,int index)

        {

            DataRow dr = dt.Rows[index]; //表示要移动的当前行对象

            string strValu = dr[0].ToString(); //当前行对象某一例的值(我这里默认是0列) strVal是记录此值

            dt.Rows.RemoveAt(index); //先删除它，在插入

            DataRow drnew = dt.NewRow();

            drnew["Engilsh"] = strValu;

            if (TypeValue == "UPEnglish") //说明是上移或者下移

            {

                dt.Rows.InsertAt(drnew, index - 1); //上移就在自已索引位置减1

            }

            else

            {

                dt.Rows.InsertAt(drnew, index+1); //反之下移就在当前位加1

            }

            gridViewInsertEnglishBind();// 绑定数据

        }

//下面是行命令事件

      protected void gridViewInTruEnglish_RowCommand(object sender, GridViewCommandEventArgs e)

        {

            switch (e.CommandName)

            {

                case "DeleteEnglish": // 删除

                   //  int row = ((GridViewRow)((ImageButton)sender).NamingContainer).RowIndex;

                     GridViewRow drvEnglishDelet = ((GridViewRow)(((ImageButton)(e.CommandSource)).Parent.Parent)); //此得出的值是表示那行被选中的索引值

                     dtInStroEnglish.Rows.RemoveAt(drvEnglishDelet.RowIndex);

                     gridViewInsertEnglishBind();// 绑定数据

                    break;

                case "DownEnglish": // 下降

                       GridViewRow drvDownEnglish = ((GridViewRow)(((ImageButton)(e.CommandSource)).Parent.Parent)); //此得出的值是表示那行被选中的索引值

                       int indexDown = drvDownEnglish.RowIndex;//当前行的索引

                       if (indexDown == dtInStroEnglish.Rows.Count-1) //表示最下面了,索引从0开始

                       {

                           return;

                       }

                       else

                       {

                           ReccordData(dtInStroEnglish, "UPEnglish", indexDown);

                       }

                    break;

                case "UPEnglish": // 上升

                      GridViewRow drvUPEnglish = ((GridViewRow)(((ImageButton)(e.CommandSource)).Parent.Parent)); //此得出的值是表示那行被选中的索引值

                      int indexUp = drvUPEnglish.RowIndex;//当前行的索引

                      if (indexUp == 0) //当它本身位置是第一个当然是不可以上移的

                      {

                          return;

                      }

                      else

                      {                

                          ReccordData(dtInStroEnglish, "UPEnglish", indexUp);

                      }

                    break;

            }

        }

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