Can't find dynamically created text box control

[Alex]

Hi,

I am creating pivot style grid. I can bind the data with row and column as well as dynamic text box control for each cell.
Rate field is text box and user can enter the data. I can create and bind the grid as follow. But when I read the data from each cells I got null referennce exception. Please let me know how do i get the data from control that dynamically created.

E.g
        

	SGD	HKD
USD	2.0	2.5
AUD	1.0	1.5

public DataTable PivotTable()           {               DataTable dest = new DataTable("Pivoted");               dest.Columns.Add(" ");                 CurrencyRate currencyRate = new CurrencyRate();               IList<DCCPP.BusinessEntities.Currency> bCurrencyList = RetrieveFXRateLocalBaseCurrency(currencyRate);               foreach (DCCPP.BusinessEntities.Currency bCurrency in bCurrencyList)               {                   dest.Columns.Add(bCurrency.Code);               }                 IList<DCCPP.BusinessEntities.Currency> sCurrencyList = RetrieveFXRateSupportedCurrency(currencyRate);               for (int i = 0; i < sCurrencyList.Count; i++)               {                   dest.Rows.Add(dest.NewRow());               }               for (int r = 0; r < dest.Rows.Count; r++)               {                   for (int c = 0; c < dest.Columns.Count; c++)                   {                       if (c == 0)                           dest.Rows[r][0] = sCurrencyList[r].Code;                       //else                           //dest.Rows[r][c] = source.Rows[c - 1][r + 1];                   }               }               dest.AcceptChanges();               return dest;           }             protected void rgFXRateDetail_NeedDataSource(object source, GridNeedDataSourceEventArgs e)           {                 rgFXRateDetail.DataSource = PivotTable();           }             protected void rgFXRateDetail_ItemDataBound(object sender, GridItemEventArgs e)           {               if (e.Item is GridDataItem)               {                   (e.Item as GridDataItem)[(rgFXRateDetail.MasterTableView.AutoGeneratedColumns[0] as GridBoundColumn).UniqueName].Font.Bold = true;                   (e.Item as GridDataItem)[(rgFXRateDetail.MasterTableView.AutoGeneratedColumns[0] as GridBoundColumn).UniqueName].BackColor = System.Drawing.SystemColors.Control;                   (e.Item as GridDataItem)[(rgFXRateDetail.MasterTableView.AutoGeneratedColumns[0] as GridBoundColumn).UniqueName].BorderColor = System.Drawing.Color.White;                       CurrencyRate currencyRate = new CurrencyRate();                   IList<DCCPP.BusinessEntities.Currency> bCurrencyList = RetrieveFXRateLocalBaseCurrency(currencyRate);                   //IList<DCCPP.BusinessEntities.Currency> sCurrencyList = RetrieveFXRateSupportedCurrency(currencyRate);                   int j = 2;                   for (int i = 1; i <= bCurrencyList.Count; i++)                   {                       DCCPP.BusinessEntities.Currency currency = bCurrencyList[i - 1];                       //string str = e.Item.Cells[j].ID;                         string controlSuffix = currency.ID.ToString();                         TextBox txtRate = new TextBox();                       txtRate.ID = "txtRate" + controlSuffix;                                                                     j++;                         e.Item.Cells[j].Controls.Add(txtRate);                                                                 }               }                            }             protected void rgFXRateDetail_ItemCommand(object source, GridCommandEventArgs e)           {               foreach (GridItem item in rgFXRateDetail.MasterTableView.Items)               {                   if (item is GridDataItem)                   {                       GridDataItem current = item as GridDataItem;                                              CurrencyRate currencyRate = new CurrencyRate();                       IList<DCCPP.BusinessEntities.Currency> bCurrencyList = RetrieveFXRateLocalBaseCurrency(currencyRate);                       //IList<DCCPP.BusinessEntities.Currency> sCurrencyList = RetrieveFXRateSupportedCurrency(currencyRate);                       int j = 2;                       for (int i = 1; i <= bCurrencyList.Count; i++)                       {                           DCCPP.BusinessEntities.Currency currency = bCurrencyList[i - 1];                           string controlSuffix = currency.ID.ToString();                           j++;                           string fxRate = ((TextBox)current.Cells[j].FindControl("txtRate" + controlSuffix)).Text;                             }                                            }                 }           }

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[Alex]

It is working now. Pls don't bother.

Thanks ,
Alex

[Tsvetoslav]

Hello Alex,

Try adding your TextBox creation code (in the ItemDataBound event) also to the ItemCreated event. Keep in mind that the ItemDataBound event is not always fired when ViewState is enabled for the grid. For more information you can review the following documentation: Commands that invoke Rebind() implicitly, Differences between ItemCreated and ItemDataBound events, Event Sequence.

Regards,
Tsvetoslav
the Telerik team

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