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POIssue in adding/removing table rows dynamically in ASP .NET using jQuery
 

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    <p>I have a user control which allows user to enter multiple email recipients. On page load, I have one table row containing name and email address textbox(with-out Remove button) </p> <p>All other table rows are being added using jQuery and each row thus added has a Remove button which allow the user to delete a particular row. Below is my code:</p> <pre><code>&lt;div&gt; &lt;table cellspacing="5" runat="server" id="tblEmailRecipients" clientidmode="Static"&gt; &lt;tr&gt; &lt;td colspan="4"&gt;Custom Email Recipients&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td colspan="3"&gt; &lt;input type="button" value="Add More" onclick="AddNewTableRow();" id="btnAdd" /&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr style="font-weight:bold"&gt; &lt;td&gt;Name&lt;/td&gt; &lt;td&gt;Email Address&lt;/td&gt; &lt;td&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&lt;asp:TextBox runat="server" ID="txtName" &gt;&lt;/asp:TextBox&gt; &lt;/td&gt; &lt;td&gt;&lt;asp:TextBox runat="server" ID="txtEmailAddress" &gt;&lt;/asp:TextBox&gt; &lt;asp:RegularExpressionValidator ID="regexValidatorEmailAddress" runat="server" ErrorMessage="Invalid Email Address" ControlToValidate="txtEmailAddress" Display="Dynamic" ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"&gt;&lt;/asp:RegularExpressionValidator&gt; &lt;/td&gt; &lt;td&gt; &lt;%--&lt;input type="button" value="Remove" onclick="DeleteTableRow(this);" id="btnRemove" name="btnRemove" /&gt;--%&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/div&gt; &lt;asp:Button ID="btnSave" runat="server" Text="Save" onclick="btnSave_Click" style="height: 26px" /&gt; </code></pre> <p>jQuery:</p> <pre><code>function DeleteTableRow(ctrl) { //delete control table row $($(ctrl).closest("tr")).remove(); } function AddNewTableRow() { //Get Row clone and add as last row //Also, created row clone but with different control ids var i = $("#tblEmailRecipients tr").length; var newRow = $("#tblEmailRecipients tr:last").clone().find("input").each( function () { $(this).attr({ 'id': function (_, id) { return id + i }, 'name': function (_, name) { return name + i }, }); }).end(); $("#tblEmailRecipients tr:last").after(newRow); $("#tblEmailRecipients tr:last input:text").val(""); //Add 'Remove' button in the last column - this needs to be done only for second row, all rows after 2nd row will auto. contain Remove button as they are cloned from prev. row var lastCell = $("#tblEmailRecipients tr:last td:last"); var lastCellContents = jQuery.trim($(lastCell).html()); if (lastCellContents == '') { var btnRemoveName = "btnRemove" + i; var btnRemove = "&lt;input type='button' value='Remove' onclick='DeleteTableRow(this);' id='" + btnRemoveName + "' name='" + btnRemoveName + "' /&gt;"; $(btnRemove).appendTo($(lastCell)); } //Move focus to newly added row Textbox $("#tblEmailRecipients tr:last input:first").focus(); } </code></pre> <p>The issue I am facing is while handling btnSave_Click,<br> Even if I add 2 or more recipients(table rows), In the code behind - I see only first table row containing email recipient. </p> <p>I wonder why I am not able to access other table rows that were added at run-time... they also go missing on UI after postback?</p> <p>Could you please guide.</p> <p>Thank you! </p>
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