确定动态创建数据表 aspx.net 中的行索引答案

【问题标题】：determine row index in dynamic created data Table aspx.net确定动态创建数据表 aspx.net 中的行索引
【发布时间】：2015-01-28 13:37:27
【问题描述】：

我已经动态创建了绑定到网格视图的数据表。每一行都在添加按钮单击事件。现在在按钮单击事件中，我需要确定数据表中行的位置，并在该按钮单击时用另一个行值替换行值。在这一行中，我正在更改行值，但是如何告诉他应该将此值放在哪一行 dtCurrentTable.Rows[0]["Artikal"] = Label12.Text; ？下面是我的代码。帮助！

//创建行的方法

           private void AddNewRecordRowToGrid()
         {

        if (ViewState["Markici"] != null)
        {
            DataTable dtCurrentTable = (DataTable)ViewState["Markici"];
            DataRow drCurrentRow = null;

            if (dtCurrentTable.Rows.Count > 0)
            {

                for (int i = 1; i <= dtCurrentTable.Rows.Count; i++)
                {


                    HttpCookie cookie = Request.Cookies["Democookie"];
                    drCurrentRow = dtCurrentTable.NewRow();

                    drCurrentRow["FirmaID"] = Request.Cookies["firma"].Value;
                    drCurrentRow["Godina"] = Request.Cookies["godina"].Value;
                    drCurrentRow["KasaID"] = Request.Cookies["kasa"].Value;
                    drCurrentRow["MarkicaID"] = 222;//Request.Cookies["kasa"].Value;
                    drCurrentRow["Datum"] = DateTime.Now;
                    drCurrentRow["Masa"] = Session["masa39"];
                    drCurrentRow["VrabotenID"] = Session["New"];
                    drCurrentRow["Artikal"] = Label3.Text;
                    drCurrentRow["Cena1"] = Label4.Text;
                    drCurrentRow["Kolicina"] = Label5.Text;
                    drCurrentRow["Smena"] = Session["smena1"];
                    drCurrentRow["VkIznos"] = Label6.Text;
                    drCurrentRow["VkDanok"] = Label8.Text;
                    drCurrentRow["SySDatum"] = DateTime.Now;
                    drCurrentRow["Vid"] = Label23.Text;
                    drCurrentRow["EdMera"] = Label10.Text;
                    drCurrentRow["ArtikalID"] = Label9.Text;
                    drCurrentRow["TarifaID"] = Label7.Text;
                }


                //Removing initial blank row  
                if (dtCurrentTable.Rows[0][0].ToString() == "")
                {
                    dtCurrentTable.Rows[0].Delete();
                    dtCurrentTable.AcceptChanges();

                }

                //Added New Record to the DataTable  
                dtCurrentTable.Rows.InsertAt(drCurrentRow, 0);
                //storing DataTable to ViewState  
                ViewState["Markici"] = dtCurrentTable;

                //binding Gridview with New Row  
                GridView2.DataSource = dtCurrentTable;
                GridView2.DataBind();


            }
        }
    }

//按钮点击事件，这里调用创建行的方法

             protected void Button6_Click(object sender, EventArgs e)
          {

     DataTable dtCurrentTable = (DataTable)ViewState["Markici"];

        if (Label37.Text == "0")
        {
            dtCurrentTable.Rows[0]["Kolicina"] = Label5.Text;
        }


        if (Label37.Text != "0")
        {

            Counter = Counter + 1;

            dtCurrentTable.Rows[0]["Kolicina"] = Convert.ToInt32(Label37.Text) + Counter;

        }



//Here I'm replaceing row values, but I need to determine row index,to know on wich row I;m changing values.
        dtCurrentTable.Rows[0]["Artikal"] = Label3.Text;
        dtCurrentTable.Rows[0]["Cena1"] = Label4.Text;
        dtCurrentTable.Rows[0]["VkIznos"] = Label6.Text;
        dtCurrentTable.Rows[0]["VkDanok"] = Label8.Text;
        dtCurrentTable.Rows[0]["EdMera"] = Label10.Text;
        dtCurrentTable.Rows[0]["ArtikalID"] = Label9.Text;
        dtCurrentTable.Rows[0]["Vid"] = Label23.Text;
        dtCurrentTable.Rows[0]["TarifaID"] = Label7.Text;

        dtCurrentTable.AcceptChanges();
        GridView2.DataSource = dtCurrentTable;
        GridView2.DataBind();
        RemoveDuplicates(dt);

    }

【问题讨论】：

标签： asp.net

【解决方案1】：

尝试使用Select() 获取您需要的行，使用Rows.IndexOf() 查找该行的索引。

     If (dtCurrentTable.Select("Artikal='" + Label3.Text + "'").Length > 0) {
          int rowIndex = dtCurrentTable.Rows.IndexOf(dtCurrentTable.Select("Artikal='" + Label3.Text + "'")[0]);
     }

有关Select() 方法的更多信息，请参阅https://msdn.microsoft.com/en-us/library/h71xaeh0(v=vs.110).aspx。

【讨论】：