LinkButtons In A Repeater Within An UpdatePanel Are Not Triggering A Postback
Sep 13, 2010
My page contains a Repeater that is loaded with data asynchronously as the data becomes available, using an UpdatePanel to manage the asynchronous requests.The page contains something a little like this:
<asp:UpdatePanel ID="DataUpdatePanel" runat="server">
<ContentTemplate>
<table>
<asp:Repeater ID="RepeaterBlock" runat="server">
<HeaderTemplate><thead><tr><th>Name</th><th>Status</th><th class="empty"></th></tr></thead></HeaderTemplate>
<ItemTemplate><tr>
[code]...
The problem being that the LinkButton does not appear to trigger a postback of any kind- there is no visible response to clicking on it and putting a break point on the event listener in the codebehind, it is never triggered.
hat the linkbuttons ceased working.
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Apr 1, 2011
We have a fairly complex content management system where we start with a blank page with just an updatepanel, then in the init function add all the controls, this all works fine.The problem I'm having is that when the loginform control logs in, we get data back from the server that looks like:
|#||4|64|pageRedirect||%2findex.aspx%3feventid%3d1079%26AspxAutoDetectCookieSupport%3d1|1|#||4|15647|updatePanel|ctl00_ContentPlaceHolder1_contentup|
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[code]...
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Jan 27, 2010
I am building a website using ASP.net ajax. there are 3 <asp:panel> controls in the page and each contains a number of dynamic linkbuttons. these panels are contained in a <asp:updatepanel> control the page_load event fills out the first panel with linkbuttons and assigns cooresponding commandName commandArgument for them, that works. then the first panel's linkbuttons triggers the command and fill out the second panel with linkbuttons, that works too. then the seond panel's linkbuttons are supposed to fill out the third panel with linkbuttons, but that doesn't work anymore, and it seems like doing the page_load event again and filling out the first panel and the second panel's linkbuttons disppear, just like the first time the page is loaded.
[code]....
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Jan 16, 2011
In this repeater linkbuttons are generetaed with an onclick event.This onclick event sets a multiview to the corresponding view.The multiview is in an update panel as well.When a linkbutton in the repeater is clicked the corresponding view is shown, but a complete refresh of the page is done.How can this be prevented, because when I have just linkbuttons on the page (so not in a repeater) that set the multiview to the corresponding view, only the multiview is refreshed instead of the complete page
[code]...
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Mar 27, 2011
I have controls which are added at run-time to a PlaceHolder control on the page which is inside an UpdatePanel. The first refresh of the UpdatePanel is fine but subsequent actions create copies of everything on the page. I get two sets of the run-time added controls on the same page. It's not smart enough to realize that the second set replaces the first set. Has anyone else seen this? Runtime added linkbuttons into UpdatePanel ;fullpostbacks instead of asyncpostback.All parameters of UpdatePanel are default. adding controls runtime like this:
[Code]....
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Jun 2, 2010
I've got a repeater that's used to display the output of a dynamic report that takes criteria from webcontrols on the page. Within the repeater's ItemDataBound method I'm adding controls (Linkbuttons for sorting by column values) dynamically to the header of the repeater based on values selected in a checkbox list and at this point setting the CommandArgument and CommandName properties of the linkbuttons.
The issue is that when the linkbuttons are clicked they don't fire the ItemCommand event although they are clearly being correctly created and added to the header (there is some additional code to set the cssClass, text etc. and this works as expected.) The first column header in the repeater is set in the markup and the itemcommand event fires correctly on this one only. When the other column headers are clicked the repeater rebinds as programmed, but the columns are not dynamically re-generated.
Nightmare.ascx
<asp:repeater runat="server" id="rptReport" OnItemDataBound="rptResults_ItemDataBound" OnItemCommand="rptResults_ItemCommand" EnableViewState="true">
<headertemplate>
<table>
<tr runat="Server" id="TRDynamicHeader">
<th>
<!-- This one works -->
<asp:Linkbutton runat="server" CommandName="sort" commandArgument='<%# Eval("Name")%?' />
</th>
<!-- additional header cells get added dynamically here -->
</tr>
</headertemplate>
<itemTemplate>
<td><%# Eval("Name")</td>
...
</itemTemplate>
</asp:repeater>
Nightmare.ascx.cs
protected void PageLoad(object sender, eventArgs e){
if (! isPostback){
setupGui();//just binds dropdowns etc. to datasources
}
}
protected void btnRunReport_Click(...){
List<ReportLines> lstRep = GetReportLines();
rptReport.DataSource = lstRep;
repReport.DataBind();
}
protected void rptReport_ItemDataBound (...){
if (e.Item.ItemType == ListItemType.Header)
{
foreach (ListItem li in chbxListBusFuncs.Items)
{
if (li.Selected)
{
th = new HtmlTableCell();
lb = new LinkButton();
lb.CssClass = "SortColHeader";
lb.CommandArgument = li.Text.Replace(" ", "");
lb.CommandName = "sort";
lb.Text = li.Text;
th.Controls.Add(lb);
((HtmlTableRow)e.Item.FindControl("TRDynamicHeader")).Cells.Add(th);
}
}
}
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
//Row level customisations, totals calculations etc.
}
}
<!-- this only gets called when the 'hardcoded' linkbutton in the markup is clicked.
protected void rptReport_ItemCommand(object sender, Eventargs e){
lblDebug.Text = string.Format("Well? What's Happening? -> {0}:{1}", e.CommandName, e.CommandArgument.ToString());
}
(The only thing that can call the runreport routine is a single button on the page, not shown in the code snippet above.)</textarea></p>
<input type='hidden' name='ID[3]' value='82079' />
<input type='hidden' name='URL[3]' value='http://forums.asp.net/t/1472917.aspx' />
<input type='hidden' name='CAT[3]' value='Forms Data Controls' />
<input type='hidden' name='BOARD[3]' value='microsoft' />
<input type='hidden' name='P_DATE[3]' value='Sep 21, 2009 02:16 AM' />
<input type='hidden' name='RANDOM[3]' value='uck4OZUSh' />
<input type='hidden' name='REPLIES[3]' value='6' />
<input type='hidden' name='USER[3]' value='aziz' />
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<p> <textarea rows=10 cols=100 name='POST[3]' onfocus='setSelRange(this, 0, 0)'/>
I have a page with a couple of RequiredFieldValidators, each in its own ValidationGroup. One of the RequiredFieldValidator controls is inside a Datalist and the submit button triggers the relevant DataList_ItemCommand. It works just dandy until I add the ValidationGroup to the button, at which point clicking on the button no longer fires the DataList_ItemCommand event. Here is the HTML
[Code]....
Note that the ValidationGroup name is there, and it is unique. No other ValidationGroups exist with that name. As it stands, this code does NOT fire the DataList_ItemCommand event, so no update occurs. However if I remove the ValidationGroup declaration from the Button control, the event fires properly.
Richard</textarea></p>
<input type='hidden' name='ID[4]' value='140242' />
<input type='hidden' name='URL[4]' value='http://forums.asp.net/t/1621410.aspx' />
<input type='hidden' name='CAT[4]' value='Forms Data Controls' />
<input type='hidden' name='BOARD[4]' value='microsoft' />
<input type='hidden' name='P_DATE[4]' value='Nov 09, 2010 10:04 AM' />
<input type='hidden' name='RANDOM[4]' value='5a4W7DeJ4' />
<input type='hidden' name='REPLIES[4]' value='4' />
<input type='hidden' name='USER[4]' value='aziz' />
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<p> <textarea rows=10 cols=100 name='POST[4]' onfocus='setSelRange(this, 0, 0)'/>
i have a repeater with a button in the footer template which i want to be able to update any of the items that are added (update quantites/totals/delete the item). however the 'UpdateOrderDetails' event never fires when the button is clicked. here is the code within the repeater...
<ItemTemplate>
<tr>
<td>
<asp:CheckBox ID="chkDelete" runat="server" />
<asp:HiddenField ID="hidProduct_Key" runat="server" />
</td>
<td><asp:Literal ID="ltlProduct_Name" runat="server" /></td>
<td><asp:Literal ID="ltlProductOption_Size" runat="server" /></td>
<td><asp:Literal ID="ltlProductOption_Code" runat="server" /></td>
<td><asp:TextBox ID="txtQuantity" runat="server" /></td>
<td><asp:Literal ID="ltlItemPrice" runat="server" /></td>
<td><asp:Literal ID="ltlLineTotal" runat="server" /></td>
</tr>
</ItemTemplate>
<FooterTemplate>
<asp:Panel ID="pnlFooter" runat="server" Visible="False">
<tr id="trTotalExVAT" runat="server">
<td colspan="6">Total (ex VAT)</td>
<td><asp:Literal ID="ltlTotalExVAT" runat="server" /></td>
</tr>
<tr id="trVAT" runat="server">
<td colspan="6">VAT</td>
<td><asp:Literal ID="ltlVAT" runat="server" /></td>
</tr>
<tr>
<td colspan="5">
<asp:Button ID="btnUpdate" OnClick="UpdateOrderDetails" Text="Update" runat="server" />
</td>
<td>Delivery</td>
<td><asp:Literal ID="ltlDelivery" runat="server" /></td>
</tr>
<tr>
<td colspan="6">Total</td>
<td><asp:Literal ID="ltlTotal" runat="server" /></td>
</tr>
</asp:Panel>
</table>
</FooterTemplate>
the 'updateorderdetails' event in code behind is here
Public Sub UpdateOrderDetails(ByVal s As Object, ByVal e As RepeaterCommandEventArgs)
For Each objRepeaterItem As RepeaterItem In rptOrderDetails.Items
Select Case objRepeaterItem.ItemType
Case ListItemType.AlternatingItem, ListItemType.Item
Dim chkDelete As CheckBox = objRepeaterItem.FindControl("chkDelete")
Dim hidProduct_Key As HiddenField = objRepeaterItem.FindControl("hidProduct_Key")
Dim txtQuantity As TextBox = objRepeaterItem.FindControl("txtQuantity")
' check for deletion or update
If chkDelete.Checked Then
Me.Basket.RemoveProduct(hidProduct_Key.Value)
Else
' check for update
If IsNumeric(txtQuantity.Text) AndAlso CInt(txtQuantity.Text) >= 0 Then
Me.Basket.Products(hidProduct_Key.Value).Quantity = txtQuantity.Text
End If
End If
End Select
Next
' update order details
BindOrderDetails()
End Sub
but this procedure is never called when the button is clicked, so wondered what i need to do to get this working
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I have imagebutton inside datalist.....the problem is that onclick event of serverside not get executed for only IE ..but its work fine for mozzila....i m not getting what wrong in this code.
aspx code
<asp:DataList
ID="dlProduct"
runat="server"
CellPadding="5"
CellSpacing="5"
Width="300px"
OnItemCommand="dlProduct_ItemCommand"
>
<ItemTemplate>
<p>
<asp:Label
ID="lblName"
Visible="false"
runat="server"
Text='<%# Bind("ModelName") %>'
CssClass="style1"
>
</asp:Label>
</p>
<p>
<strong><span
class="style1">
MRP : Rs.
<asp:Label
ID="mrp"
runat="server"
Text='<%# Bind("mrp") %>'
CssClass="styles"
>
</asp:Label>
</span>
<br
/>
</strong>
</p>
<p>
<strong>
<span
class="style1">Price : Rs.</span>
<asp:Label
ID="PriceLabel"
runat="server"
Text='<%# Bind("price") %>'
CssClass="style1">
</asp:Label> <br
/> </strong>
</p>
<asp:Label
runat="server"
ID="lblQuantity"
Text=""
Font-Bold="true"
CssClass="style1"></asp:Label>
<asp:Textbox
ID="tbQuantity"
runat="server"
Width="22px"
Text="1"
CssClass="nutext"
Visible="false"
></asp:Textbox>
<img
src="images/buynow_btn.jpg"
width="144"
height="58"
runat="server"
/>
<asp:ImageButton
runat="server"
ID="btnAddToCart"
src="images/addtocart.jpg"
width="144"
height="81"
CommandName="AddToCart"
/>
<asp:Button
runat="server"
ID="Button1"
Text="Add to Cart"
CausesValidation="false"
CommandName="AddToCart"
/>
</ItemTemplate>
</asp:DataList>
CS code
protected void dlProduct_ItemCommand(object source,
DataListCommandEventArgs e)
{
Response.Write("hello");
Response.End();
}
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Feb 1, 2010
I would like an UpdatPanel to update it's content once a button is clicked - this button is contained within a UserControl placed on the webpage.However, I cannot just simply reference it using the AsyncPostBackTrigger's ControlID property, because the button is not situated directly on the webpage.
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Nov 17, 2010
I am trying to trigger a postback if a certain condition is true. Initially, a user will click on a button on my form, the server does some work, and in the process of doing that work it assigns a hidden field the value of '1'. When the page reloads after that very first postback, I am trying to use javascript to check the hidden field, and if it is '1' I need the page to postback again so the server side can do some additional processing. The reason for doing it this roundabout way is so that I can create controls on the form from my C# code behind as well as download a file in 1 user interaction. Here is what I have so far:
<script type="text/javascript" language="JavaScript">
function atload() {
var HWInfo = document.getElementById('HiddenHW').value;
[code]...
View 3 Replies
Jan 14, 2011
I have a page that has a updatepanel around a gridview control that is within my modalpopup. So you land on the page, there is a link that when clicked will open the model popup. Initially the gridview merely displayed saved records you personally choseto save, well when you selected one, the popup would close and the data from that row would be passed to the gridview within the page to display details.. no issue when it was setup that way.. well eventually it was decided to add a delete option within themodal popup gridview so now when viewing the records you can delete it if not needed. works well.. but now with the updatepanel surrounding the gridview when i click on my "select" link it doesnt execute my
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May 11, 2010
[Code]....
I have a GridView attached to an ObjectDataSource (returning a DataTable) in a UserControl. The code is really simple. Data comes down fine when the page is first rendered. When I click on Select or Delete (inside TemplateFields), RowCommand is supposed to fire but it doesn't, the page goes straight to Page_Load. I literally have 0 other event handlers that are set on this control and everything else in the codebehind shouldn't even fire if it's a postback. Also on postback, the Select and Delete buttons disappear. It looks like the TemplateFields are still there but they're empty. The data fields (all of two columns) post back fine.
UC ASPX Code:
[Code]....
Code Behind:
[Code]....
containing UC:
[Code]....
And here is the code from the ObjectDataSource:
[Code]....
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Jun 23, 2010
For the solution, I cannot use any postback methods, because this is all working through ajax. The solution need to be implemented in the asp.net code. I have a List<WebPage> that contains a list of Links (List<Link>) and I need for all the links to bind repetitive information such as page title, id, url. Here is my current repeater.
<div id="result">
<asp:Repeater runat="server" id="results">
<Itemtemplate>
<asp:Repeater runat="server" datasource='<%# Eval("Links") %>'>
<Itemtemplate>
<tr class="gradeX odd">
<td><%# Eval("Id") %></td> //property of WebPage (part of results repeater)
<td><%# Eval("Title") %></td> //property of WebPage (part of results repeater)
<td><%# Eval("Url") %></td> //property of WebPage (part of results repeater)
<td><%# Eval("URL") %></td>//Property of Link
<td><%# Eval("URLType") %></td> //Property of Link
<td><%# Eval("URLState") %></td> //Property of Link
</tr>
</Itemtemplate>
</asp:Repeater>
</Itemtemplate>
</asp:Repeater>
</div>
of course this doesnt work, how can i do this?
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Mar 4, 2011
I have a web user control with one updatepanel (pnlUpdate_2), some controls and one apply button. I display the web user control as a modalpopup in my default page. In my default page i have an updatepanel (pnlUpdate_1) with a gridview and I modify that gridview with the apply button of the web user control. The web user control is for made a custom search of the gridview data. I have a problem with both updatepanels. If I set the updatemode as always in one of them (pnlUpdate_1) and the other as conditional (pnlUpdate_2), the pnlUpdate_1 make a postback in the pnlUpdate_2; I'm not an expert on this but I think that's why the pnlUpdate_2 disappear and reappear after postback of some controls in that updatepanel (not the apply button, it close the modal after postback). I try all the combinations and the problem persists. So I put both updatepanels as conditional and in some way it works; now the problem is that when I click the apply button in pnlUpdate_2 to modify the gridview in pnlUpdate_1 the pnlUpdate_1 not made the postback I get the pnlUpdate_2 postback when I use some control inside the pnlUpdate_1.
How can I postback the pnlUpdate1 from pnlUpdate_2 with the apply button?
View 3 Replies
Mar 28, 2011
In my UserControl, Im trying to update a updatepanel that is inside a repeater like this:
HTML-Markup
<asp:UpdatePanel ID="updDocumentQuickView" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Repeater ID="repFolders" runat="server"
[code]...
The end result I get is that updDocumentQuickView is the UpdatePanel that gets updated, and not updFiles. If i wrap an UpdatePanel around lnkFolder, then that UpdatePanel gets updated, with the same C# code. Ive checked what kind of data that are sent back with fiddler, and the wrong UpdatePanel is sent. Im getting the correct RepeaterItem, and both repFiles and updFiles are found. What do I miss to get the right UpdatePanel to get updated?
UPDATE
Hawxby solution solved the problem with updDocumentQuickView getting updated, thanks for that. But im still having problems with updFiles sending nothing back. Some further testing, with putting literals inside updFiles and working, tells me that theres something with repFiles that isnt returned. repFiles does have data that is bounded.
FINAL SOLUTION
repFiles.Visible were set to false in repFolders_OnItemDataBound, no wonder it didnt show.
View 1 Replies
Jun 16, 2010
I am having trouble with the postbacks that are fired within my updatepanel by the linkbuttons. Here is the structure of my page: UpdatePanelMultiViewView1/View1View2RepeaterLinkButtons being generated here /Repeater/View2/MultiView/UpdatePanel. Here is my link button code
<asp:LinkButton ID="lnkSelect" runat="server" OnClick="SelectOrganization" CommandName="OrgID">SELECT</asp:LinkButton>
Whenever I click on any of the LinkButtons that are generated, it does a Postback in the UpdatePanel. But the OnClick function is not being called. It just does the void Page_Load() function. That's it. The controls in my other views work fine, but I'm having trouble with these controls. I think it has to do with them being generated by the Repeater.
View 3 Replies
Aug 31, 2010
I've got a TextBox with AutoPostBack="true" and OnTextChanged property set.
The textbox is located inside a Repeater, which in turn is located inside an UpdatePanel.
Problem is - whenever the TextBox postsback, the whole page gets reloaded, instead of the UpdatePanel only.
Here's how the thing looks:
[Code]....
Interesting thing is, if I take the TextBox out of the repeater, it refreshes only the UpdatePanel. So is if I put a Button inside the repeater - only the UpdatePanel gets refreshed. But whenver I place an AutoPostBack-ing control inside the Repeater, the whole page gets refreshed.
[Code]....
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Jan 6, 2010
I'm building a webshop, and I'm having some issues with my Repeater implementation. I use the Repeater to display products, and for each product i have a dropdownlist for the customer to select a quantity. And i want the repeater to show the product price dynamicly as the user select a quantity. I had a partial working solution using updatepanels, but I encounterd several problems with it..
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Jun 16, 2010
I am having trouble with the postbacks that are fired within my updatepanel by the linkbuttons. Here is the structure of my page
View 6 Replies
Jan 31, 2011
In a page contains two UpdatePanels, How can I know which UpdatePanel causes the partial PostBack ?
I mean in the Page_Load event handler.
This is my code:
[Code]....
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Aug 17, 2010
When I click a button that causes a postback on the UpdatePanel it calls the tinyMCE.triggerSave().
It reloads the panel and the editor show up again, but when I try to call tinyMCE.triggerSave() the second time I get the following error:
g.win.document is null
I though it was getting the old instance, but I'm also removing the control (tinyMCE.execCommand('mceRemoveControl',false,'Editor');) after I call the save. Even so it still crashes the second time.
View 1 Replies
May 25, 2010
I need to intercept server callback after udate panel async post back and determine which panel initiated the request. The code is pretty simple:
Sys.WebForms.PageRequestManager.getInstance().add_pageLoaded(InterceptUpdateCallback);
function InterceptUpdateCallback(sender, args)
{
var updatedPanels = args.get_panelsUpdated();
for (idx = 0; idx < updatedPanels.length; idx++) {
if (updatedPanels[idx].id == "myUpdatePanel") {
StartSmth();
break;
}
}
}
And it works when UpdatePanel is not inside another UpdatePanel. But when it is inside another UpdatePanel updatedPanels[idx].id has parent Updatepanel id. So how can I get the id of UpdatePanel which initiated the request (the inner UpdatePanel)?
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Dec 16, 2010
I have an update panel that has a timer set as the AsyncPostBackTrigger.In this Update Panel I have a repeater and in the repeater I have a few buttons which have on click events.The on click of these buttons does not appear to fire until the timer has tickedI have tried debugging and this is what seems to be happening, either way it takes ages for the button click to actually fire.
View 3 Replies
Feb 2, 2011
I've been having trouble getting buttons inside of my repeater to work correctly. They behave as I would expect, but the first time they are clicked, they do nothing. I recreated my problem in this example code.
[Code]....
And here's the code-behind:
[Code]....
View 7 Replies
Mar 19, 2010
I've got a repeater which is placed inside an updatepanel. When the user enters a new value, the repeater is updated without a postback. Is it possible to get the row that was updated in JQuery so that I can place an effect on it to make the change less subtle? For example, I'd like to fade a new color in on just the row that was changed.
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Jan 16, 2010
i have upgrade my website from framework 2.0 to 3.5 but i have problem with ajax .I get full postback when i click a linkbutton inside update panel .
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Nov 19, 2010
How do i run a javascript event after a postback within an updatepanel
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