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POASP.NET Table Causes 500 Error after PostBack Occurs
 

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  1. POASP.NET Table Causes 500 Error after PostBack Occurs
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    <p>Good day! I've spent quite a few hours trying to figure this one out and now I need some help.</p> <p>I have an ASP.NET AjaxToolKit <code>TabContainer</code> which has four <code>TabPanel</code> children. Each of these children has it's own <code>UpdatePanel</code> so I can run the logic in each panel without reloading everything (AJAX).</p> <p>Here's my problem:</p> <p>In my SECOND<code>TabPanel</code> I have some markup that looks like this:</p> <pre><code>&lt;div id="ProgramMilestonesDiv" style="margin-left: 6px;"&gt; &lt;asp:Table ID="ProgramMilestonesTable" runat="server" Visible="true"&gt; &lt;/asp:Table&gt; &lt;/div&gt; </code></pre> <p>In my <code>Page_Init</code> routine I dynamically add row/cells/labels/texboxes to the control.</p> <p>When I do a postback in the SECOND <code>TabPanel</code>, any postbacks in the FIRST <code>TabPanel</code> now cause a 500 error to be returned from the server. If I never do a postback in the SECOND, the FIRST postback runs fine. This is even if I don't put any values in the dynamically created controls for the table (i.e., I'm not putting any invalid characters in there to trip the page validation).</p> <p>If I remove the dynamic creation of the textboxes it works, but I'm stumped as to why because they are blank AND I've made sure all the control IDs are unique. I even have a bunch of other dynamically created textboxes on the page, using the same code-behind method for doing so, and they work fine (they are in tables in <code>Accordion</code> controls).</p> <p>Any suggestions on what might be going wrong? Any suggestions on debugging it to see the specific reason it is failing?</p> <p>My code-behind for creating the textboxes looks like this:</p> <pre><code> public static void AddVariableCostRowToTable(Table TargetTable, string CostArea, string CostType, Extender Extender) { string[] quarters = { "Q1", "Q2", "Q3", "Q4", "Q5", "Q6", "Q7", "Q8", "Q9", "Q10", "Q11", "Q12" }; TableRow row = new TableRow(); // New row we'll add to table. // First cell is just the name of the cost. TableCell cell = new TableCell(); Label label = new Label(); label.Width = new Unit(175); label.Text = CostType.Replace('_', ' ') + ":"; cell.Controls.Add(label); row.Controls.Add(cell); // Create all the textboxes for the individual quarters. foreach (string q in quarters) { row.Controls.Add(CreateNewCellWithTextBox(CostArea, CostType, q, Extender)); } TargetTable.Controls.Add(row); // Add the row to the table. } public static TableCell CreateNewCellWithTextBox(string CostArea, string CostType, string Quarter, Extender Extender) { TableCell cell = new TableCell(); TextBox textbox = new TextBox(); textbox.ID = CostArea + CostType + Quarter; // string textbox.Width = new Unit(65); // Pixels wide. textbox.Text = ""; if (Extender == Extender.MASKED_EDIT_EXTENDER) textbox.Text = "0"; // Only initialize to 0 if textbox is for money. textbox.Style.Add(HtmlTextWriterStyle.TextAlign, "right"); textbox.ClientIDMode = ClientIDMode.Static; cell.Controls.Add(textbox); if (Extender == Extender.MASKED_EDIT_EXTENDER) // If calling routine wanted a $$$ filter on the textbox. { // Add an ajaxtoolkit extender so we can enforce currency formatting. MaskedEditExtender extender = new MaskedEditExtender(); extender.ID = "MaskedEditExtender" + textbox.ID; extender.TargetControlID = textbox.ID; extender.Mask = "999999"; extender.OnFocusCssClass = "MaskedEditFocus"; extender.MaskType = MaskedEditType.Number; extender.InputDirection = MaskedEditInputDirection.RightToLeft; extender.AcceptNegative = MaskedEditShowSymbol.Left; extender.DisplayMoney = MaskedEditShowSymbol.Left; cell.Controls.Add(extender); } return cell; } </code></pre> <p>Thanks!</p>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USMr. Spock
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

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