2013-06-03 16 views
0

我有一個網格視圖,用戶將不得不在文本框中輸入的東西和wadever用戶類型將被插入到數據庫中,我有這個問題或問題,每次我點擊「+」按鈕(添加新聞行),前一行數據的文本框中的一個將被刪除。所選的單選按鈕也將被刪除。繼承人是截圖的問題是什麼:在網格視圖設置以前的數據

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點擊「+」按鈕後,它會變成是這樣的:

enter image description here

這是我的代碼背後:

private void AddNewRowToGrid() 
    { 
     int rowIndex = 0; 

     CheckBox chkbox1 = (CheckBox)GridView1.Rows[rowIndex].Cells[2].FindControl("CheckBox1"); 
     CheckBox chkbox2 = (CheckBox)GridView1.Rows[rowIndex].Cells[2].FindControl("CheckBox2"); 

     if (ViewState["CurrentTable"] != null) 
     { 
      DataTable dtCurrentTable = (DataTable)ViewState["CurrentTable"]; 
      DataRow drCurrentRow = null; 
      if (dtCurrentTable.Rows.Count > 0) 
      { 
       for (int i = 1; i <= dtCurrentTable.Rows.Count; i++) 
       { 
        //extract the TextBox values 
        TextBox box1 = (TextBox)GridView1.Rows[rowIndex].Cells[1].FindControl("TextBox1"); 
        TextBox box2 = (TextBox)GridView1.Rows[rowIndex].Cells[2].FindControl("TextBox2"); 
        TextBox box3 = (TextBox)GridView1.Rows[rowIndex].Cells[2].FindControl("TextBox3"); 

        drCurrentRow = dtCurrentTable.NewRow(); 


        dtCurrentTable.Rows[i - 1]["Question"] = box1.Text;  
        dtCurrentTable.Rows[i - 1]["Hints"] = box3.Text; 


        rowIndex++; 
       } 
       dtCurrentTable.Rows.Add(drCurrentRow); 
       ViewState["CurrentTable"] = dtCurrentTable; 

       GridView1.DataSource = dtCurrentTable; 
       GridView1.DataBind(); 
      } 
     } 
     else 
     { 
      Response.Write("ViewState is null"); 
     } 

     // Set Previous Data on Postbacks 
     SetPreviousData(); 
    } 

    private void SetInitialRow() 
    { 
     DataTable dt = new DataTable(); 
     DataRow dr = null; 
     dt.Columns.Add(new DataColumn("Question", typeof(string))); 
     dt.Columns.Add(new DataColumn("Hints", typeof(string))); 

     dr = dt.NewRow(); 
     dr["Question"] = string.Empty; 
     dr["Hints"] = string.Empty; 


     dt.Rows.Add(dr); 


     //Store the DataTable in ViewState 
     ViewState["CurrentTable"] = dt; 

     GridView1.DataSource = dt; 
     GridView1.DataBind(); 
    } 

    private void SetPreviousData() 
    { 
     int rowIndex = 0; 
     if (ViewState["CurrentTable"] != null) 
     { 
      DataTable dt = (DataTable)ViewState["CurrentTable"]; 
      if (dt.Rows.Count > 0) 
      { 
       for (int i = 0; i < dt.Rows.Count; i++) 
       { 
        TextBox box1 = (TextBox)GridView1.Rows[rowIndex].Cells[1].FindControl("TextBox1"); 
        TextBox box2 = (TextBox)GridView1.Rows[rowIndex].Cells[2].FindControl("TextBox2"); 
        TextBox box3 = (TextBox)GridView1.Rows[rowIndex].Cells[2].FindControl("TextBox3"); 



        //Setting previous text to the respective textboxes based on columns. 
        box1.Text = dt.Rows[i]["Question"].ToString(); 
        box2.Text = dt.Rows[i]["Hints"].ToString(); 
        box3.Text = dt.Rows[i]["Hints"].ToString(); 


        Session["Question1"] = box1.Text; 
        rowIndex++; 
       } 
      } 
     } 
    } 

我可以很容易地做到這一點,只有每個列上有一個文本框..但現在每個列上有2個文本框列......因爲我只能將文本追加到基於列名的文本框中......另外,如何維護我的單選按鈕幫助表示感謝,謝謝!

+0

問題是,您正在將兩個文本框值保存到一個數據表列。數據表中有兩列,每個文本框一列最好。 HintsOne,HintsTwo或者使用一些分隔符來合併兩個文本框的值,並將其放入數據表的一列(提示)中。然後將它們分開,然後顯示到Gridview中...它不是那麼好,所以更喜歡第一種方法(使用兩列) – Munawar

+0

是的,我認爲這是一種選擇,但我想這樣工作.. duno如果可能.. – user2376998

+0

一列將始終具有單個文本框的值,除非在放入數據列之前合併兩個文本框中的值。 dt.Rows [I] [ 「提示」]的ToString();將始終返回單個值(最有可能是您從textbox3保存的任何值)因此,您可以選擇將兩個數據列合併,然後再將其存儲到數據表中,然後再將這些值分開,然後再放回文本框 – Munawar

回答

2
private void AddNewRowToGrid() 
     { 
      int rowIndex = 0; 

      CheckBox chkbox1 = (CheckBox)GridView1.Rows[rowIndex].Cells[2].FindControl("CheckBox1"); 
      CheckBox chkbox2 = (CheckBox)GridView1.Rows[rowIndex].Cells[2].FindControl("CheckBox2"); 

      if (ViewState["CurrentTable"] != null) 
      { 
       DataTable dtCurrentTable = (DataTable)ViewState["CurrentTable"]; 
       DataRow drCurrentRow = null; 
       if (dtCurrentTable.Rows.Count > 0) 
       { 
        for (int i = 1; i <= dtCurrentTable.Rows.Count; i++) 
        { 
         //extract the TextBox values 
         TextBox box1 = (TextBox)GridView1.Rows[rowIndex].Cells[1].FindControl("TextBox1"); 
         TextBox box2 = (TextBox)GridView1.Rows[rowIndex].Cells[2].FindControl("TextBox2"); 
         TextBox box3 = (TextBox)GridView1.Rows[rowIndex].Cells[2].FindControl("TextBox3"); 

         drCurrentRow = dtCurrentTable.NewRow(); 


         dtCurrentTable.Rows[i - 1]["Question"] = box1.Text;   
         dtCurrentTable.Rows[i - 1]["Hints"] = box2.Text; 
         dtCurrentTable.Rows[i - 1]["Hints1"] = box3.Text; 


         rowIndex++; 
        } 
        dtCurrentTable.Rows.Add(drCurrentRow); 
        ViewState["CurrentTable"] = dtCurrentTable; 

        GridView1.DataSource = dtCurrentTable; 
        GridView1.DataBind(); 
       } 
      } 
      else 
      { 
       Response.Write("ViewState is null"); 
      } 

      // Set Previous Data on Postbacks 
      SetPreviousData(); 
     } 

     private void SetInitialRow() 
     { 
      DataTable dt = new DataTable(); 
      DataRow dr = null; 
      dt.Columns.Add(new DataColumn("Question", typeof(string))); 
      dt.Columns.Add(new DataColumn("Hints", typeof(string))); 
      dt.Columns.Add(new DataColumn("Hints1", typeof(string))); 

      dr = dt.NewRow(); 
      dr["Question"] = string.Empty; 
      dr["Hints"] = string.Empty; 
      dr["Hints1"] = string.Empty; 


      dt.Rows.Add(dr); 


      //Store the DataTable in ViewState 
      ViewState["CurrentTable"] = dt; 

      GridView1.DataSource = dt; 
      GridView1.DataBind(); 
     } 

     private void SetPreviousData() 
     { 
      int rowIndex = 0; 
      if (ViewState["CurrentTable"] != null) 
      { 
       DataTable dt = (DataTable)ViewState["CurrentTable"]; 
       if (dt.Rows.Count > 0) 
       { 
        for (int i = 0; i < dt.Rows.Count; i++) 
        { 
         TextBox box1 = (TextBox)GridView1.Rows[rowIndex].Cells[1].FindControl("TextBox1"); 
         TextBox box2 = (TextBox)GridView1.Rows[rowIndex].Cells[2].FindControl("TextBox2"); 
         TextBox box3 = (TextBox)GridView1.Rows[rowIndex].Cells[2].FindControl("TextBox3"); 



         //Setting previous text to the respective textboxes based on columns. 
         box1.Text = dt.Rows[i]["Question"].ToString(); 
         box2.Text = dt.Rows[i]["Hints"].ToString(); 
         box3.Text = dt.Rows[i]["Hints1"].ToString(); 


         Session["Question1"] = box1.Text; 
         rowIndex++; 
        } 
       } 
      } 
     } 

我剛剛添加了另一列其餘代碼已經工作正常。

+0

感謝您的時間。 – user2376998

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