In our application of asp.net with c#, we are using Ajax with update panel control.
In panel, we have put export to excel button inside tab panel.
We have also put triggers after ending of content template. Please find below code for your reference.
<asp:UpdatePanel ID="UpdatePanelPage" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<table id="tblMain" runat="server" cellpadding="0" cellspacing="0" width="100%">
<tr>
<td>
<asp:TabContainer ID="TabContainer1" runat="server" Width="100%">
<asp:TabPanel ID="tabCompanyName" runat="server">
<asp:Button ID="btnStateExportToExcel" runat="server" Text="Export To Excel" CssClass="button" OnClick="btnStateExportToExcel_Click" />
</asp:TabPanel>
</asp:TabContainer>
</td>
</tr>
</table>
</ContentTemplate>
<Triggers>
<asp:PostBackTrigger ControlID="btnStateExportToExcel" />
</Triggers>
</asp:UpdatePanel>
Now when we run the page following error would be display.
“A control with ID 'btnStateExportToExcel' could not be found for the trigger in UpdatePanel 'UpdatePanelPage'.“
Any idea/suggestion would be highly appreciable.
*As per search results of Google, the button resides in tab panel due to which page was not able to find this control.
Your button are located inside other controls. You should specify namingcontainer hierarchy for update panel trigger. I think this helps you:
<asp:PostBackTrigger ControlID="TabContainer1$tabCompanyName$btnStateExportToExcel" />
Related
I am having a bit of trouble with a dynamic asp.net FormView (within Insert.aspx.vb) in my ASP.NET LINQ to SQL Website. Here is the code for the FormView...
<asp:FormView runat="server" ID="FormView1" DataSourceID="DetailsDataSource" DefaultMode="Insert"
OnItemCommand="FormView1_ItemCommand" OnItemInserted="FormView1_ItemInserted" RenderOuterTable="false">
<InsertItemTemplate>
<table id="detailsTable" class="DDDetailsTable" cellpadding="6">
<asp:DynamicEntity runat="server" Mode="Insert" />
<tr class="td">
<td colspan="2">
<asp:LinkButton runat="server" CommandName="Insert" Text="Insert" />
<asp:LinkButton runat="server" CommandName="Cancel" Text="Cancel" CausesValidation="false" />
</td>
</tr>
</table>
</InsertItemTemplate>
</asp:FormView>
When this form is displayed in a browser, there are 5 user input controls, and two buttons (insert/cancel). But here in the code, I do not see any reference to the 5 user input controls, unless they are represented by this line of code...
<asp:DynamicEntity runat="server" Mode="Insert" />
First, am I correct in assuming that this line of code builds the user input controls dynamically?
And, my actual problem -- I need to set the Focus to the first of these input's upon page initialization. Basically when someone chooses to insert a new item and is sent to this page, I want them to be able to start typing right away, without the need to actually click in that textbox to begin. Any help would be greatly appreciated?
I was able to resolve my issue by adding a Search field via Code, and then using this in the Page_Load event...
If table.DisplayName = "Employees" Then
MultiSearchFieldSet.Visible = True
txbMultiColumnSearch.Focus()
Im using an UpdatePanel to refresh a datagrid with some search results but is not working and the whole page goes in postback. i hope somebody can help me, cant get this to work right. . Thanks. Here is my code:
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td align="left" class="pageTitle" valign="top">
<twc:LocalizedLiteral Text="CRMcontxt6" runat="server" />
</td>
</tr>
<tr align="left" style="background-color: #9bbbe3">
<td align="left" colspan="3">
<asp:Label ID="lblSearch" Height="15" runat="server" Font-Bold="true" Font-Size="11"></asp:Label>
<asp:TextBox Width="500px" ID="Search" autoclick="BtnSearch" runat="server" CssClass="boxDesign" />
<asp:LinkButton ID="BtnSearch" runat="server" CssClass="save" />
</td>
</tr>
</table>
<asp:datagrid id="searchresults" runat="server">
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="BtnSearch" />
</Triggers>
</asp:UpdatePanel>
This looks like a familiar .NET Bug. Setting ClientIDMode="AutoID" on the LinkButton should fix it (by the way, you can remove the trigger. It's not needed).
Some solutions:
a. Try Giving UpdateMode = Conditional in the UpdatePanel and try ( when you give triggers
you must define this )
b. Try removing the <table>, and replace it with <div>, sometimes Update Panels are not friendly with the table tag.
c. If above does not work, first try removing the triggers, and the update mode condition and see whether that works. Because if that doesn't work, it means something wrong with the content inside the update panel. You may want to start with some controls to drill down your problem.
d. I see user controls getting called - check if you have update panel inside those user controls placed properly.
Use this in UpdatePanel:
UpdateMode="Conditional" ChildrenAsTriggers="true"
Check that your HTML source does not have 2 or more <form> tags. An asp.net page is supposed to ordinarily have only one <form> tag.
Though this question has been long asked without an answer so far, I faced a similar problem, but discovered the cause of the update panel not working:
When you have a <form> tag in some piece of HTML and then insert that HTML fragment inside the already existing <form> tag of your master page, you get into problems. Each time the child page of the master page is run, and the submit button is clicked, the code the button is supposed to run wont execute. Instead the whole page gets refreshed despite the update panel, and it might also add a query string in the URL of the page.
The nested <form> tag of the master page is at the cause of this. As soon as you remove the extra <form> tag everything should work fine.
Hope this helps someone.
You missed the trigger event. Your trigger should look like this
<Triggers>
<asp:AsyncPostBackTrigger ControlID="BtnSearch" EventName="Click" />
</Triggers>
Don't forget to set the UpdateMode attrivute of the update panel to Conditional
Here is a reference :: Using Triggers in an UpdatePanel in ASP.NET 4.0 C#
I have a page with Ajax Tab controls, within one of the tabs is a webcontrol that as a Telerik RadGrid, with Edit forms pointing to another web control. That edit form also contains Ajax Tabs and on one of those tabs, there is an Ajax modal popup of yet another webcontrol.
The initial webcontrol works fine when used on its own page, but the edit form fails to appear when the control is used within the Ajax Tabs as desired. The script manager is throwing the following error:
Microsoft JScript runtime error: Sys.InvalidOperationException: Could not find UpdatePanel with ID 'xxx'. If it is being updated dynamically then it must be inside another UpdatePanel.
Any assistance with this would be appreciated.
This issue occurs in Telerik RadAjaxManager when you adds invisible controls to it.
So in case of your in need to show/hide AJAX controls, it is recommended to add AJAX settings grammatically from you code behind (based on control visibility state) instead of ASPX code.
For more information: Please check this answer on the Telerik forums.
Well, I am considering this error is coming in your script. If you are showing/hiding the update panel then it will give this error. The best solution is known to me which worked too is put your update panel into the content template of the other update panel which will be the parent of the update panel that you are showing/hiding.
<asp:UpdatePanel ID="Panel1" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:UpdatePanel ID="Panel2" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Label ID="labwl1" runat="server" Text="Label">
</asp:Label>
</ContentTemplate>
</asp:UpdatePanel >
</ContentTemplate>
</asp:UpdatePanel >
Now if you will hide the update panel with id Panel2 it won't give any error.
In most of the cases - If container/Parent of that update panel is trRow
and you have somewhere in code like trRow.Visible = false; then It wont find said updatepanel and throw error.
To start off with the troubleshooting, I personally will try to remove parts of the code and thus designate the reason for the error. For example, remove the grid and load the user control dynamically on tab click to see if the problem remains, then remove the inner ajax tab or the modal popup and perform another check, etc.
That is correct, I've wasted 2 hrs to find out why all of the sudden my code stopped working...
turned out I've been a bit cleaning a bit too much of my rem'ed code out and removed a closing in my update panel...
<asp:UpdatePanel ID="submitupdatepanel" runat="server">
<ContentTemplate>
<div class="block" style="height: 60px; width: 400px;">
<div class="centered">
<asp:LinkButton ID="submitbutton" runat="server" CssClass="button_red2 " Text=" <span>Submit </span>">
</asp:LinkButton>
<asp:LinkButton ID="cancelbutton" runat="server" CssClass="button_gray2 " Text=" <span>Cancel</span>" Visible="false" OnClientClick="window.close()">
</asp:LinkButton>
</div>
</ContentTemplate>
</asp:UpdatePanel>
<br />
<div style='display: none'>
<asp:UpdatePanel runat="server">
<ContentTemplate>
<asp:PlaceHolder ID="myhiddenpopups2" runat="server" Visible="true"></asp:PlaceHolder>
</ContentTemplate>
</asp:UpdatePanel>
</div>
which then gave this same error on the hidden updatepanel part below it.
After i put the missing back in, al went back to normal status
<asp:UpdatePanel ID="submitupdatepanel" runat="server">
<ContentTemplate>
<div class="block" style="height: 60px; width: 400px;">
<div class="centered">
<asp:LinkButton ID="submitbutton" runat="server" CssClass="button_red2 " Text=" <span>Submit </span>">
</asp:LinkButton>
<asp:LinkButton ID="cancelbutton" runat="server" CssClass="button_gray2 " Text=" <span>Cancel</span>" Visible="false" OnClientClick="window.close()">
</asp:LinkButton>
</div>
</div>
</ContentTemplate>
</asp:UpdatePanel>
<br />
<div style='display: none'>
<asp:UpdatePanel runat="server">
<ContentTemplate>
<asp:PlaceHolder ID="myhiddenpopups2" runat="server" Visible="true"></asp:PlaceHolder>
</ContentTemplate>
</asp:UpdatePanel>
</div>
Hope it helps for someone.
K
I resolved the issue by removing the UpdatePanel on the initial tab that contained the WebControl. I'm not clear on why this should have caused the issue though so if anyone can explain that, I'd be interested to find out.
So, for example, I originally had this:
<cc1:TabContainer ID="TabContainer1" runat="server" ActiveTabIndex="0" OnClientActiveTabChanged="TabContainer1_OnChanged" Visible="true" >
<cc1:TabPanel runat="server" ID="TabPriorities">
<HeaderTemplate>Manage Prioritys</HeaderTemplate>
<ContentTemplate>
<asp:UpdatePanel ID="UpdatePanelPriorities" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<uc1:PriorityGrid ID="PriorityGrid1" runat="server" />
</ContentTemplate>
</asp:UpdatePanel>
</ContentTemplate>
</cc1:TabPanel>
And I changed it to:
<cc1:TabContainer ID="TabContainer1" runat="server" ActiveTabIndex="0" OnClientActiveTabChanged="TabContainer1_OnChanged" Visible="true" >
<cc1:TabPanel runat="server" ID="TabPriorities">
<HeaderTemplate>Manage Prioritys</HeaderTemplate>
<ContentTemplate>
<uc1:PriorityGrid ID="PriorityGrid1" runat="server" />
</ContentTemplate>
</cc1:TabPanel>
And that resolved the script error coming out of the user control which also contained ajax tabs and a modal popup.
This can be caused by unclosed tag or missing end tag.
In my case I had 2 update panels on the page, but only 1 of them had an ID. Setting an ID for the other one resolved the error.
My page contains a few updatepanels. I fixed this error by making sure all of them were visible and didn't have display:none.
You can find which panel is causing the error by viewing the source of the page and searching for the ID the error is giving you.
EDIT: I'd like to revise my answer based on some new things I discovered while working with update panels in UpdateMode="Conditional".
This is still in context of addressing the OP's issue of encountering the above error.
The scenario for me is that I have a parent update panel with several nested child update panels:
<asp:UpdatePanel ID="upParent" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<%-- Header Content --%>
<asp:UpdatePanel ID="upChild1" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<%-- Child1 Content --%>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdatePanel ID="upChild2" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<%-- Child2 Content --%>
</ContentTemplate>
</asp:UpdatePanel>
<asp:Button ID="btnEditMode" runat="server" Text="Edit" OnClick="btnEditMode_Click"></asp:Button>
</ContentTemplate>
</asp:UpdatePanel>
In order for the Edit button to change content in both child update panels and also refresh the overall Parent update panel without causing any issues, you might want to consider doing an asynchronous postback:
<asp:UpdatePanel ID="upParent" runat="server" UpdateMode="Conditional">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnEditMode" EventName="Click" />
</Triggers>
<ContentTemplate>
<%-- Header Content --%>
<asp:UpdatePanel ID="upChild1" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<%-- Child1 Content --%>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdatePanel ID="upChild2" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<%-- Child2 Content --%>
</ContentTemplate>
</asp:UpdatePanel>
<asp:Button ID="btnEditMode" runat="server" Text="Edit" OnClick="btnEditMode_Click"></asp:Button>
</ContentTemplate>
</asp:UpdatePanel>
This works for me, I don't get the above mentioned (OP's) error any longer.
Interestingly enough, almost similar to the OP's scenario, I've been working with Ajax Tab Controls and each tab contained child update panels. This is where I've encountered the exact same error message and resolved it by adding the asynchronous post back trigger.
I have a user control with linkbuttons (used for paging) and a repeater inside an update panel. The paging works correctly, but is causing a full page postback every time I click through to the next page.
The update panel looks like this:
<asp:UpdatePanel ID="up1" runat="server" UpdateMode="Always">
<ContentTemplate>
<asp:Repeater ID="rptOrganizations" runat="server">
<HeaderTemplate>
<table>
<thead>
<tr>
<th>Organization</th>
<th>State</th>
<th>Accredited Since</th>
</tr>
</thead>
</table>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td>
<asp:Literal ID="ltlInstitution" runat="server" />
</td>
<td>
<asp:Literal ID="ltlState" runat="server" />
</td>
<td>
<asp:Literal ID="ltlAccreditedDate" runat="server" />
</td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
<uc2:RepeaterPaging ID="rpPager" runat="server" PageSize="10" OnNextButtonClickEvent="btnNext_Click" OnPreviousButtonClickEvent="btnPrev_Click" />
</ContentTemplate>
</asp:UpdatePanel>
And the contents of the user control look like this:
<asp:LinkButton ID="btnPrev" runat="server" OnClick="btnPrev_Click">Previous</asp:LinkButton> |
<asp:LinkButton ID="btnNext" runat="server" OnClick="btnNext_Click">Next</asp:LinkButton>
<asp:Literal ID="ltlNumResults" runat="server" /> results returned.
So far, I have tried adding an async postback trigger for the user control, which does cause an async postback but does not update the rest of the text in the update panel. In otherwords, the async postback occurs and the next page shows up, but the original text in the repeater is there as well just below it.
I have also confirmed that I have IDS set on my linkbuttons, since that can trigger a full postback inside an update panel.
I have tried changing the update panel mode (Always, Conditional, ChildrenAsTriggers, etc.).
None of it makes a difference - the only thing that actually causes an async postback is to use the trigger, but then the rest of the content in the update panel is not updated, so I get duplicate content. Any ideas?
Full postback happens if your UpdatePanel cannot render its contents to a <div> (e.g., when it is situated inside of <tr>). So check you html inside of UpdatePanel, you might find the answer there (also, look for some incorrect xhtml, like incorrectly closed elements).
Remove the update mode="Always" Don't put anything over that and it should work.
One more thing are you adding script manager to your page or control not?
Without script manager it will not work.
I have a master page on which at the top i show a div using jquery. in that div i have a update panel with a checkbox with autopostback true. basically i want to make a menu to change settings without full page postback.it works perfectly
but i have a certain child page in which i have a gallery which has a update panel inside which is a datalist to be able to change images without postback.
problem is when i click on the master page checkbox the update panels on the child page also get refreshed..why this happens???
also for the master page updatepanel i have update mode to conditional and childeren as triggers to false and i have set an asynchpostback trigger for CheckBox1_CheckChanged event.
so am i doing anything wrong...
<asp:UpdatePanel ID="UpdatePanel1" runat="server" ChildrenAsTriggers="False" UpdateMode="Conditional">
<ContentTemplate>
<table border="0" cellpadding="0" cellspacing="0" style="width: 100%">
<tr>
<td style="padding-right: 2px">
<asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="True" OnCheckedChanged="CheckBox1_CheckedChanged" />
</td>
<td>
notify me of new buzz through email</td>
</tr>
</table>
<asp:HiddenField ID="bmStatus" runat="server" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="CheckBox1" EventName="CheckedChanged" />
</Triggers>
</asp:UpdatePanel>
do i have to set any other settings on the child page update panels...i will post the child page update panel code if asked!!!
Thanks a lot
An UpdatePanel is a full postback no matter what. I recommend removing ChildrenAsTriggers="False" unless you have some other reason for needing it. Below is a link to what this setting does. You may need multiple UpdatePanels to achieve your desired functionality.
http://www.asp.net/ajax/documentation/live/mref/P_System_Web_UI_UpdatePanel_ChildrenAsTriggers.aspx