Why Is OnBeforeUnload Firing Twice With LinkButton?
Feb 10, 2010
I have the following Jquery function to notify the user with a prompt when they have unsaved changes (similar to how SO does it) and are trying to leave the current screen.
<!-- in my aspx page -->
<script type="text/javascript" language="javascript">
window.onbeforeunload = function()
{
if (HasPendingUpdates())
{
return "Changes you have made will not be saved.";
}
}
</script>
This works as expected and shows the message box when the user tries to click a href to browse away or use the back button etc. The problem I am having is that one of my links is a asp:LinkButton because it needs to fire off some server side code before leaving the page. When the user clicks this LinkButton they get the prompt twice.
Scenarios:
User clicks the LinkButton
Prompt appears and user clicks the cancel button.
Prompt disappears and user is still on screen. GOOD.
User clicks the LinkButton
Prompt appears and clicks the OK button.
Prompt disappears and the same prompt shows again.
User clicks OK again.
Prompt disappears and user moves to the next screen and all is good.
So why am I getting the second prompt??? How is the OnBeforeUnload firing twice?
I've placed a link button control on my web form and added the click event to the code behind automatically), but I've placed a break point and it never hits it. If I do the same thing with a button it works just fine.I've searched for this problem and none of the results seem to answer why mine isn't working. Maybe I'm just missing something?
when i click the link button in Masterpage the window has to close. This function is working properly in IE but in fireFox or chrome or Safari Other than IE in all browsers postback is happening.
I have two problems with a databound AJAX Accordion. The Accordion looks like this:
[Code]....
The code behind has this subroutine:
[Code]....
[Code]....
The first problem I'm having is that this subroutine is not fired (I have a breakpoint in it) when the LinkButton inside the accordion is clicked. The Page_Load event fires and there is no error message, javascript errors, etc, but nothing else happens.
The second problem is that I'm not sure how to go backwards with the databind. I want to be able to make use of the UpdateMethod in the ObjectDataSource because I also have textboxes inside the accordion. I will have a Save subroutine that can be called but I'm not sure what code to put inside it.
I have a form action in an ASCX page set to an external URL
<form id="fLoginForm" runat="server" action="http://external.url" method="post" defaultbutton="bSignIn"> Inside there is a standard ASP linkbutton <asp:LinkButton CssClass="btn" ID="bSignIn" runat="server" Text="Sign In" OnClick="bSignIn_Click" />
The event "bSignin_Click" never gets fired when I have ction="http://external.url" set on the form tag. However when I remove the action, it works as expected. I thought for runat='server' forms, the form would always post back? I need to read the URL from the action attrib and then redirect to it with some hidden input values also in the page.
I am adding numerical page links for paging of a repeater. I have used on of the numerical paging samples as my base. It works fine if I have less pages than my maximum total links. Eg if I have 11 pages, but only showing page 1-10 plus a next for the 11th, I get an error about duplicate control ids. I changed my control id to use a Guid in the string to keep it unque, after making this change the event handler never fires
private LinkButton createButton(string title, int index) LinkButton lnk = new LinkButton(); //lnk.ID = System.Guid.NewGuid().ToString("N") + "_" + index.ToString();//Event does not fire if I set ID with Guid [code]...
Problem : I have Added One Link button to the above Table.. Click Event for That Link Button Is not Firing Now. when i click on link button of table event is not firing at all.
I am using the following code to load user control on to ASPX Page, which under a Master Page:
[Code]....
The user control name is passed as a parameter on the URL.
Inside the user, there is a LinkButton. The link button has a simple server side code for OnClick event.
Everything is working fine on the production machine, but, on the Development machine, I can see incorrect behaviour. I have started making some development changes on the Development Machine since several months back, and it will be very difficult to find out what caused the problem.
When I click the LinkButton inside the user control, the user control is removed from the parent page, and the OnClick event of the LinkButton is not firing.
I did debug, and found out that after I click on the LinkButton inside the user control, then the Page Load events for the master page and the ASPX page are working fine, and the IsPostBack is set to true, but the OnClick event of the LinkButton is not firing.
Very new to ASP.NET (using C# behind) and am having trouble figuring out the following scenario. I have a DataList that is populated (code below) and wanted each cell to be clickable. When the cell is clicked I wanted to know the unique ID for that cell. In my code behind, my OnClick method looks like this:
[Code]....
However I never get there. It seems as if the linkbutton always refers to some javascript callback function and just reloads my form. Am I using the wrong control for what I want to do? From this click I want to look up more information from the Key (will roll up the datalist or set visible to false, then supply the new data on the same page)DataList:
In one of my applications, i created the left navigation menu using treeviewcontrol. Each and every node in the treeview is calling a URL in the application.Content pages are dynamically created ASP.NET controls.There is no submit or save buttons in these pages. When the user finished entering the data and go to another link in the tree structure, the data need to be saved in the database and go to the next link.I tried this using OnBeforeUnload and Document.form1.submit, the aspnet form is not submitting, so there is no postback. I also tried __dopostback method call from the javascript. Still not able to get it working.
I am using jquery onbeforeunload event in asp.net application. If i write event as given below then its working fine and display confirm dialog box.
var vGlobal = true; var sMessage = "Leaving the page will lost in unsaved data!"; [ Working ] > window.onbeforeunload = function() { > if (vGlobal == false) return > sMessage; }
but its not working if i use bind method like as given below
[ Not working ] $(window).bind("beforeunload", function(e) { if (vGlobal == false) return sMessage; });
Is there any difference between these two methods.
Code on aspx:
<asp:TextBox ID="txtName" runat="server"></asp:TextBox> CLICK ON THIS LINK TO SEE RUNNING EXAMPLE
On my parent page I added a script which ask confirmation befor page unload (On every button press) using window.onbeforeunload, The problem i use to open a subPage on this parent page, and on closing of the subpage i use to reload the parent page, but it ask confirmation and I dnt want that....
var onBeforeUnloadFired = false; window.onbeforeunload = function (sender, args) { if(window.event){ if(!onBeforeUnloadFired) { onBeforeUnloadFired = true; window.event.returnValue = 'You will lose any unsaved changes!'; //IE } } else { return 'You will lose any unsaved changes!'; //FX } windows.setTimeout("ResetOnBeforeUnloadFired()", 1000); } function ResetOnBeforeUnloadFired() { //Need this variable to prevent IE firing twice. onBeforeUnloadFired = false; }
I'm trying to achieve an edit screen where the user is warned before navigating away. It works fine except I get the pop up for normal post backs of button clicks. I'm hoping to avoid this so I'm figuring if I could determine which button was pressed it would work. Does anybody know how to determine which button was pressed in the indows.onbeforeunload? Alternatively anyone know a better approach to what I'm trying to achieve?
What I want to do: dispose of a session upon detecting an "OnBeforeUnload" event in the client. I know it doesn't fire 100% of times (90% accuracy works fine for me)
Here I saw how to do it with ajax, this system, however, breaks down with ajax: I can't use it at all.
i am currently developing an asp.net project. there is a previous, next, and cancel button that the user can utilize, but the problem is that everything is broken into controls so that if they hit the browser's back button it will reset everything and take them to the very beginning. i would like to capture the onbeforeunload event and trigger the previous button click event (i.e. treating navigation like clicking the previous button).
As you can see, nothing special; just colors and beautiful things.
I click on the blue Edit button and it fires the OnClick postback just fine.... in Chrome! But if I do the same in IE8, it just does nothing; doesn't even detect a click.
I removed the tag and kept just the word "Edit", and it works just fine in IE8 as a simple underlined link; the postback fires.
So, Why can't IE8 accept anything within LinkButton?
I'm sure I'm missing something extremely obvious here, but at this point I can't see it so I need the help.Anyway, I've got a repeater inside of an UpdatePanel. As of right now, I've stripped it down to this, just to try and isolate the problem:
[Code]....
Whether I add the handler during itemdatabound or I add the handler within the repeater itself, it doesn't seem to matter...the event itself doesn't fire. The AutoPostback itself seems to fire, but the event itself doesn't.
I want to implement hit tracking in an HttpModule in my ASP.NET app. Pretty simple, I thought. However, the BeginRequest event of my HttpModule is firing twice for each page hit. The site is very simple right now...no security, just a bit of database work. Should log one row per page hit. Why is this event firing twice?
Moreover, IHttpModule.BeginRequest actually fires a different number of times for the first page hit when running for the first time (from a closed web browser)...3 times when I'm hitting the DB to provide dynamic data for the page, and only 1 time for pages where the DB isn't hit. It fires 2 times for every page hit after the first one, regardless of whether or not I'm touching the DB.
It's interesting to note that Application_BeginRequest (in Global.asax) is always firing only once.
I'm new to asp.net and I have quite an annoying issue. I have a masterpage and a number of linkbuttons to navigate through the aspx pages.
My problem is that when I click on a linkbutton than the one selected, it doesn't highlight the selected linkbutton, because postback has been initialized. Instead it highlights the linkbutton that I have specified in the Page_Load event.
In my user control I have gridview, and this grid is created programmatically, using Itemplate. In InstantiateIn methods I have this code.
Select Case _templateType Case ListItemType.Header Dim linkButton As New LinkButton [code]....
I want to wired up Click event to this LinkButton, and use this event in code behind.This is constructor of GridViewTemplate how implements ITemplate
Public Sub New(ByVal type As ListItemType, ByVal colname As String, Optional ByVal infoType As String = "") 'Stores the template type. _templateType = type 'Stores the column na [code]....
and i have this call from user control:bfield.ItemTemplate = New GridViewTemplate(ListItemType.Item, dt.Columns(col).ColumnName, "label")
where is Dim bfield As TemplateField = New TemplateField()
I have 2 link button in my page and every thing was working fine until i added window.onload() method on my page. After adding window.onload() first link button is working but not the second button. I am using update panel in my page
