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ASP.NET: UpdatePanel not displaying even when Visible set to True

I have two Update Panels in an aspx page and one ModalPopupExtender inside each of them. The problem I am facing is that, I have set the Visible property to false in the aspx page and set it to True when it needs to be displayed. But the UpdatePanel is not showing up even though I have set Visible=True property.
aspx code:
<%--Request closed --%>
<asp:UpdatePanel ID="udpModalReqClose" runat="server" Visible="false">
<ContentTemplate>
<div style="display:none">
<asp:Button ID="btnDummyButton_ReqClose" UseSubmitBehavior="true" runat="server" Text="DummyButton" Style="display: none;" />
</div>
<asp:Panel ID="pnlCloseReq" runat="server" BackColor="White" BorderStyle="Solid" BorderColor="Black" BorderWidth="1px">
<div>
<table id="Table24" runat="server" border="0" cellpadding="4" cellspacing="10" width="400px">
<tr>
<td align="center">
<asp:Label ID="lblcloseSuccessOPR" runat="server" Font-Bold="true" ForeColor="Red" />
</td>
</tr>
<tr>
<td style="height: 5px;"></td>
</tr>
<tr>
<td align="center">
<asp:Button ID="btn_okclose" runat="server" SkinID="btnSearch" CssClass="btnSearch" OnClick="btnPOCPIRedirect_Click"
CausesValidation="false" align="center" Text="OK" Width="65px" />
</td>
</tr>
<tr>
<td style="height: 5px;"></td>
</tr>
</table>
</div>
</asp:Panel>
<cc1:ModalPopupExtender ID="mpeClosedSuccess" runat="server" PopupControlID="pnlCloseReq" TargetControlID="btnDummyButton_ReqClose"
BackgroundCssClass="modalPopup1" DropShadow="true" BehaviorID="mpe">
</cc1:ModalPopupExtender>
</ContentTemplate>
</asp:UpdatePanel>
<%--Request declined --%>
<asp:UpdatePanel ID="udpModalReqDecline" runat="server" Visible="false">
<ContentTemplate>
<div style="display:none">
<asp:Button ID="btnDummyButton_ReqDecline" UseSubmitBehavior="true" runat="server" Text="DummyButton" Style="display: none;" />
</div>
<asp:Panel ID="pnlRequestDecline" runat="server" BackColor="White" BorderStyle="Solid" BorderColor="Black" BorderWidth="1px">
<div>
<table id="Table17" runat="server" border="0" cellpadding="4" cellspacing="10" width="400px">
<tr>
<td align="center">
<asp:Label ID="lblRequestDecline" runat="server" Font-Bold="true" ForeColor="Red" />
</td>
</tr>
<tr>
<td style="height: 5px;"></td>
</tr>
<tr>
<td align="center">
<asp:Button ID="Button4" runat="server" SkinID="btnSearch" CssClass="btnSearch" OnClick="btnPOCPIRedirect_Click"
CausesValidation="false" align="center" Text="OK" Width="65px" />
</td>
</tr>
<tr>
<td style="height: 5px;"></td>
</tr>
</table>
</div>
</asp:Panel>
<cc1:ModalPopupExtender ID="mpeRequestDecline" runat="server" PopupControlID="pnlRequestDecline" TargetControlID="btnDummyButton_ReqDecline"
BackgroundCssClass="modalPopup1" DropShadow="true" BehaviorID="mpe">
</cc1:ModalPopupExtender>
</ContentTemplate>
</asp:UpdatePanel>
Link buttons which triggers the modalpopup in aspx:
<ItemTemplate>
<asp:LinkButton ID="LinkButton3" OnClick="lnkCloseReleaseHL" runat="server"
Text="Close"></asp:LinkButton>
</ItemTemplate>
<asp:TemplateColumn HeaderText="Decline">
<ItemTemplate>
<asp:LinkButton ID="lnkDeclineHLRelease" runat="server" OnClick="lnkDeclineHLRelease_Click">Decline All</asp:LinkButton>
</ItemTemplate>
Code behind:
public void lnkCloseReleaseHL(object sender, System.EventArgs e)
{
udpModalReqClose.Visible = true;
string successMsg = "Request has been closed Succesfully.";
lblcloseSuccessOPR.Text = successMsg;
mpeClosedSuccess.Show();
}
protected void lnkDeclineHLRelease_Click(object sender, EventArgs e)
{
udpModalReqDecline.Visible = true;
string successMsg = "Request has been declined.";
lblRequestDecline.Text = successMsg;
mpeRequestDecline.Show();
}
If I do not set the Visible=False property in the aspx page, one of the ModalPopup is shown on the webpage, blank with the 'OK' button I have inserted in the popup.
Also, if I have just one UpdatePanel in my aspx page, the popup works perfectly fine without setting Visible property. Once I add another UpdatePanel below it, this problem occurs(screenshot in the link), where the panel with 'OK' button is displayed on page load.
Panel appearing on page with the 'OK' button
I tried searching for every possible solutions on the web but nothing has helped me. If someone can please guide me how I can resolve this, it would be of great help. I just want to know how I can make multiple UpdatePanels work without having this issue.

I'm not sure, but you can try using
style="display:none"
instead of
Visible="false"

Implementing two contact forms with validation controls in a single page in ASP.NET?

I'm using two contact forms in the same aspx page, one has 4 textbox controls (name- email- subject- body) and send button control.
The second form has 2 textbox controls and send button, all (except the second textbox of the second form) has validation controls (requiredFieldValidator).
This is the code inside the first button click event:
protected void ButtonSend_Click(object sender, EventArgs e)
{
if(Page.IsValid)
{
LabelIRespond.Visible = true;
.....
}
}
there is no code in the second button click event.
the problem is, when the first form validated successful and the second form not validated, the code inside click event not executed. and the error message of the second form appears. They act like they are one form!
The markup for both forms:
<section id="sendSection">
<div id="contactMe">
<h1>Contact me</h1>
</div>
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<h4>Send me a message:</h4>
<table class="auto-style1">
<tr>
<td class="auto-style8">
<asp:TextBox ID="TextBoxEmail" placeholder="Your Email address" runat="server" BackColor="#D4D8DF" Font-Names="Century Gothic" CssClass="txtbxs" Height="25px" Width="250px"></asp:TextBox>
</td>
<td>
<asp:RequiredFieldValidator ID="RequiredFieldValidatorEmail" runat="server" ControlToValidate="TextBoxEmail" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="Please enter your Email address">*</asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="TextBoxEmail" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="RegularExpressionValidator" ValidationExpression="\w+([-+.']\w+)*#\w+([-.]\w+)*\.\w+([-.]\w+)*">*</asp:RegularExpressionValidator>
</td>
</tr>
<tr>
<td class="auto-style8">
<asp:TextBox ID="TextBoxName" placeholder="Your name" runat="server" BackColor="#D4D8DF" Font-Names="Century Gothic" CssClass="txtbxs" Height="25px" Width="250px"></asp:TextBox>
</td>
<td>
<asp:RequiredFieldValidator ID="RequiredFieldValidatorName" runat="server" ControlToValidate="TextBoxName" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="RequiredFieldValidator">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td class="auto-style5">
<asp:TextBox ID="TextBoxSubject" placeholder="Subject" runat="server" BackColor="#D4D8DF" Font-Names="Century Gothic" CssClass="txtbxs" Height="25px" Width="250px"></asp:TextBox>
</td>
<td class="auto-style3">
<asp:RequiredFieldValidator ID="RequiredFieldValidatorSubject" runat="server" ControlToValidate="TextBoxSubject" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="RequiredFieldValidator">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td class="auto-style6">
<asp:TextBox ID="TextBoxBody" placeholder="What do you want to tell me?" runat="server" BackColor="#D4D8DF" TextMode="MultiLine" Font-Names="Century Gothic" CssClass="txtbxs" Height="180px" Width="370px"></asp:TextBox>
</td>
<td class="auto-style2">
<asp:RequiredFieldValidator ID="RequiredFieldValidatorBody" runat="server" ControlToValidate="TextBoxBody" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="Type your message">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td class="auto-style8">
<asp:Button ID="ButtonSend" runat="server" Text="Send" CssClass="btnSend" Width="80px" OnClick="ButtonSend_Click" UseSubmitBehavior="False" Font-Names="Century Gothic" />
</td>
<td>
</td>
</tr>
<tr>
<td class="auto-style8">
<asp:Label ID="LabelIRespond" runat="server" Text="Thanks, your message has been sent. I'll respond ASAP." Visible="False"></asp:Label>
</td>
<td>
</td>
</tr>
</table>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="UpdatePanel1">
<ProgressTemplate>
<div class="wait">
</div>
</ProgressTemplate>
</asp:UpdateProgress>
</section>
<div class="split"></div>
<section id="viewCVSection">
<div id="check">
<h1>Check out my CV</h1>
</div>
<div class="cvForm">
<table class="auto-style1">
<tr>
<td class="auto-style4">
<asp:TextBox ID="TextBoxEmail2" placeholder="Company Email address" CssClass="txtbxs" runat="server" BackColor="#D4D8DF" Height="25px" Width="250px" Font-Names="Century Gothic"></asp:TextBox>
</td>
<td>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="TextBoxEmail2" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="RequiredFieldValidator">*</asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="RegularExpressionValidator2" runat="server" ControlToValidate="TextBoxEmail2" CssClass="ErrorMessage" Display="Dynamic" ErrorMessage="RegularExpressionValidator" ValidationExpression="\w+([-+.']\w+)*#\w+([-.]\w+)*\.\w+([-.]\w+)*">*</asp:RegularExpressionValidator>
</td>
</tr>
<tr>
<td class="auto-style4">
<asp:TextBox ID="TextBoxCompany" placeholder="Company name" CssClass="txtbxs" runat="server" BackColor="#D4D8DF" Height="25px" Width="250px" Font-Names="Century Gothic"></asp:TextBox>
</td>
<td> </td>
</tr>
<tr>
<td class="auto-style4">
<asp:Button ID="Button1" CssClass="sendCV" runat="server" Text="Request CV" Font-Names="Century Gothic" OnClick="Button1_Click" />
</td>
<td> </td>
</tr>
</table>
</div>
</section>

You need to hook up validation controls with the correct button. Right now, button click in first form is causing validation in first contact form as well as second contact form, which is causing Page.IsValid to be false since second form fields are empty and therefore invalid.
So set the validation group of first contact form different from the second contact form as in code below. Then set the ValidationGroup on corresponding validation controls with the same value.
<asp:Button ID="ButtonSend" runat="server" Text="Send" CssClass="btnSend"
Width="80px" OnClick="ButtonSend_Click" UseSubmitBehavior="False"
Font-Names="Century Gothic" ValidationGroup="FirstGroup"/>
<asp:Button ID="Button1" CssClass="sendCV" runat="server"
Text="Request CV" Font-Names="Century Gothic" OnClick="Button1_Click"
ValidationGroup="SecondGroup"/>
NOTE: Make sure that all validation controls have their ValidationGroup also set to appropriate value after you make above code change.

Migrating a web form to web-form with Master

I have a web form up.
Later on, I realized I need a Master Page with a navigation that other web forms should follow.
I am in the process of manually migrating.
Taking this approach, Create Master Page -> Cut from web form -> Paste to web form with master -> erase the old web form.
As following. (I didn't create a navigation control yet, to not complicate the process further).
[New Master Page]
</asp:ContentPlaceHolder>
</div>
</form>
[Old Web Form]
<asp:EntityDataSource ID="entityDataSource" runat="server" ConnectionString="name=VideoLibraryEntities" DefaultContainerName="VideoLibraryEntities" EnableDelete="True" EnableFlattening="False" EnableInsert="True" EnableUpdate="True" EntitySetName="Clips" EntityTypeFilter="Clipo" OnSelecting="EntityDataSource_Selecting">
</asp:EntityDataSource>
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AllowSorting="True" DataSourceID="entityDataSource">
<Columns>
<asp:CommandField ShowDeleteButton="True" ShowEditButton="True" ShowSelectButton="True" />
</Columns>
</asp:GridView>
<div>
<h1>Sending Email</h1>
<table>
<tr>
<td>From:</td>
<td>
<asp:TextBox ID="txtFrom" runat="server" Width="250px"></asp:TextBox>
</td>
</tr>
<tr>
<td>From EMail:</td>
<td>
<asp:TextBox ID="txtFromEmail" runat="server" Width="250px"></asp:TextBox>
</td>
</tr>
<tr>
<td>To:</td>
<td>
<asp:TextBox ID="txtTo" runat="server" Width="250px"></asp:TextBox>
</td>
</tr>
<tr>
<td>To Email:</td>
<td>
<asp:TextBox ID="txtToEmail" runat="server" Width="250px"></asp:TextBox>
</td>
</tr>
<tr>
<td>Subject:</td>
<td>
<asp:TextBox ID="txtSubject" runat="server" Width="250px"></asp:TextBox>
</td>
</tr>
<tr>
<td>Message:</td>
<td>
<asp:TextBox ID="txtMessage" runat="server" TextMode="MultiLine" Height="138px"
Width="467px"></asp:TextBox>
</td>
</tr>
<tr>
<td colspan="2" align="right">
<asp:Button ID="btnSend" runat="server" Text="Send Email"
onclick="btnSend_Click" />
</td>
</tr>
</table>
<asp:Label ID="Label1" runat="server" ForeColor="Blue" />
</div>
</form>
Now shall I create a Master page with navigation and just paste the old web form into the new one?
Thanks.

<asp:UpdatePanel > doesn't work inside a table <tr>?

I have a problem getting an <asp:UpdatePanel..> to work inside a <table>.. <tr> </tr> structure and I don't know why. When the UpdatePanel is commented out everything works fine, but when I un-comment the UpdatePanel the contents of the <tr> </tr> tag doesn't even show up in Visual Studio 2010. This content does display when I run the web page but the UpdatePanel doesn't work. Non of my other web pages in this project have this problem but, then again, I use <div>s instead of <table>s in them.
One other thing. The is in my MasterPage.
Here is my script:
<asp:UpdatePanel ID="W9UpdatePanel" runat="server" UpdateMode="Always">
<ContentTemplate>
<tr>
<td colspan="6">
<div class="branchSetupSectionTitle">W-9 Information:</div>
</td>
</tr>
<tr>
<td colspan="2">
<asp:Button ID="btnDownloadW9Pdf" runat="server"
Text="Download W-9" onclick="btnDownloadW9Pdf_Click" AutoPostBack="True" />
<%--<asp:RegularExpressionValidator ID="RegularExpressionValidator24"
runat="server" ControlToValidate="txtFirstPaymentAmount" Display="Dynamic"
ErrorMessage="The dollar amount you entered is in the wrong format."
ForeColor="Red" ValidationExpression="^\d+(\.\d\d)?$">*</asp:RegularExpressionValidator>--%>
<asp:CheckBox ID="chkW9FormSubmitted" runat="server" AutoPostBack="True"
oncheckedchanged="chkW9FormSubmitted_CheckedChanged"
Text=" I have submitted this W-9 Form" />
</td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
</ContentTemplate>
</asp:UpdatePanel>
</tr>
The event fires for both the button and the checkbox but the entire page is refreshed.
Thanks for your help.

UpdatePanel needs to render a div or span in order to function correctly. Since neither of these elements can be rendered between table rows, UpdatePanel does not have a placeholder to render the postback response html, and thus it doesn't work.
A workaround in your case may be to see which part of your page does not need to be inside the update panel and leave it outside. You could leave just the contents of <td colspan="2"> inside the UpdatePanel.

<asp:ScriptManager ID="scm" runat="server">
</asp:ScriptManager>
<fieldset>
<legend>Truck Master Entry Form</legend>
<asp:UpdatePanel ID="upd1" runat="server">
<ContentTemplate>
<table cellpadding="2" cellspacing="1">
<tr>
<td align="right">
Truck no :
</td>
<td align="left">
<asp:TextBox ID="truckno" runat="server" Width="120px" Height="20px" />
</td>
</tr>
<tr>
<td align="right">
Size :
</td>
<td align="left">
<asp:DropDownList ID="drptrucksize" runat="server" Width="120px" Height="20px" DataValueField="WEIGHT"
DataTextField="SIZE" OnSelectedIndexChanged="drptrucksize_SelectedIndexChanged"
AutoPostBack="true" />
</td>
</tr>
<tr>
<td align="right">
Type :
</td>
<td align="left">
<asp:TextBox ID="txttrucktype" runat="server" Width="120px" Height="20px" />
</td>
</tr>
<tr>
<td align="right">
Weight :
</td>
<td align="left">
<asp:TextBox ID="txtweight" runat="server" Width="120px" Height="20px" />
</td>
</tr>
<tr>
<td align="right">
</td>
<td align="left">
<asp:Button ID="btnsave" runat="server" Text="Save" Width="100px" Height="50px" />
<asp:Button ID="btncancel" runat="server" Text="Cancel" Width="100px" Height="50px" />
</td>
</tr>
</table>
</ContentTemplate>
</asp:UpdatePanel>

The update panel need to be put outside the table. Look at
Mohammad Shahnawaz's code.

ValidatorCalloutExtender and ModalPopupExtender Issues on MasterPage

I have just created a website with a MasterPage. I have two conditions that will illustrate my problem:
Condition 1:
I have added a ModalPopupExtender on website.master. It has three fields and each field has a RequiredFieldValidator and a ValidatorCalloutExtender.
Condition 2:
I have a few different pages where you can click on a registration link. When you click the registration link, a registration form will appear. This form also has RequiredFieldValidators and ValidatorCalloutExtenders for each field.
Problem:
If I open a registration form and want to place my feedback, I click on the feedback button. The feedback modal popup displays. If I click on the submit button without filling the feedback form, it should give me the error in ValidatorCalloutExtender format on the ModalPopupExtender panel. However, it doesnt show me any error but the ValidatorCalloutExtender does show on the registation form along with respective validation.
<cc1:ModalPopupExtender CancelControlID="lnk_cancel" ID="popup_change_password" BackgroundCssClass="modalBackground"
runat="server" TargetControlID="ImageButton1" PopupControlID="panel_change_password">
</cc1:ModalPopupExtender>
<asp:Panel ID="panel_change_password" runat="server" Style="display: none; height: 400px;
width: 400px; padding-left:30px; background-repeat:no-repeat;" BackImageUrl="~/Images/background.gif">
<table cellspacing="0" cellpadding="0" border="0">
<tr>
<td colspan="3" valign="top">
<table cellpadding="0" cellspacing="0" width="400px">
<tr>
<td align="right">
<asp:ImageButton ID="lnk_cancel" runat="server" ImageUrl="Images/close.gif" Height="30px"
Width="30px" />
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="3">
<asp:Label ID="lbl_new_password" runat="server" Text="Your feedback is important to us."
CssClass="login_font1"></asp:Label>
</td>
</tr>
<tr>
<td colspan="3">
</td>
</tr>
<tr>
<td>
<asp:Label ID="lbl_name" runat="server" Text="Name" CssClass="Label_Styles"></asp:Label>
</td>
<td>
:
</td>
<td>
<asp:TextBox ID="txt_name" runat="server" CssClass="Textbox_Styles"></asp:TextBox>
</td>
</tr>
<tr>
<td colspan="3">
</td>
</tr>
<tr>
<td>
<asp:Label ID="lbl_email" runat="server" Text="Email Address" CssClass="Label_Styles"></asp:Label>
</td>
<td>
:
</td>
<td>
<asp:TextBox ID="txt_email" runat="server" CssClass="Textbox_Styles"></asp:TextBox>
</td>
</tr>
<tr>
<td colspan="3">
</td>
</tr>
<tr>
<td>
<asp:Label ID="lbl_comment" runat="server" Text="Comments" CssClass="Label_Styles"></asp:Label>
</td>
<td>
:
</td>
<td>
<asp:TextBox ID="txt_comment" runat="server" CssClass="Textbox_Styles" Height="120px"></asp:TextBox>
</td>
</tr>
<tr>
<td colspan="3">
</td>
</tr>
</table>
</asp:Panel>

Put the above code in an UpdatePanel with UpdateMode="Conditional" and ChildrenAsTriggers="False".
So it will look something like :
<asp:UpdatePanel ID="sbsModalExtenderUpdatePanel" runat="server" UpdateMode="Conditional"
Visible="False" ChildrenAsTriggers="False">
<ContentTemplate>
<asp:Panel ID="StepByStepBookingPanel" runat="server" Enabled="false" EnableViewState="false"
Style="display: block" CssClass="mediumModalPopup" ScrollBars="Auto" Width="800px"
Height="300px" ViewStateMode="Enabled">
<div id="clientCoordDiv" runat="server">
<table id="StepByStepTable" runat="server">
etc...
</table>
</div>
</asp:Panel>
<ajax:ModalPopupExtender ID="mpeStepByStepBooking" runat="server" BackgroundCssClass="modalBackground"
PopupControlID="StepByStepBookingPanel" CancelControlID="BtnCancel" OnCancelScript="ClearStepByStepPopup"
TargetControlID="hdnStepByStepButton" DropShadow="true" BehaviorID="modalwithinput" />
<asp:CompareValidator ID="ClientCoordinatorCompareValidator" runat="server" ErrorMessage="Please select a Client Coordinator"
ControlToValidate="ddlClientCoordinator" Display="None" Operator="NotEqual" SetFocusOnError="True"
Type="Integer" ValueToCompare="0" ValidationGroup="SelectionRequired">
</asp:CompareValidator>
<asp:CompareValidator ID="CVOCoordinatorCompareValidator" runat="server" ErrorMessage="Please select a CVO Coordinator"
ControlToValidate="ddlCVOCoordinator" Display="None" Operator="NotEqual" ValueToCompare="0"
Type="Integer" SetFocusOnError="True" ValidationGroup="SelectionRequired">
</asp:CompareValidator>
<ajax:ValidatorCalloutExtender ID="CompareClientCoordinatorExt" runat="server" Enabled="True"
TargetControlID="ClientCoordinatorCompareValidator" BehaviorID="ClientValidatorExt">
</ajax:ValidatorCalloutExtender>
<ajax:ValidatorCalloutExtender ID="CVOCoordinatorCompareValidatorExt" BehaviorID="CVOValidatorExt"
runat="server" Enabled="True" TargetControlID="CVOCoordinatorCompareValidator">
</ajax:ValidatorCalloutExtender>
</ContentTemplate>
</asp:UpdatePanel>
This will keep the dialog up while you validate it. Unfortunately, I do not have the full solution since my validator messages are not displaying. So far, from what I am getting on the Net it is a problem with the Ajax library. Ugly!
Oh well, hope this helps someone...