Calling jvascript function from the button under UpdatePanel

Hello,

I am having a a web application developed using asp.net2.0 with vb.net as a language.

In this web application i am having two buttons and one update panel. Now my button1 is outside the updatepanel and another button2 is present inside the updatepanel.

In asp.net if we want to run any javascript function on the click of a button then we normally use the button.attribute.add() function but if we want that when user click on button then first some server side code will be performed and then the javascript function will be called.

For that we uses the below code in asp.net !!!

Page.ClientScript.RegisterClientScriptBlock(Me.GetType,"Script", "<Script>alert('Hello');</Script>")

this code is working fine on the click event of the button that is present outside the update panel. But when i am running the same code on the click event of the button that is present inside the updatepanel then its not working,

Remeber that i d't want to run the javascript code when user just click on the button , i want first some server side code wil perform his work then after this script will run.

But for controls under update panel its not working.??

please paste your code here, because I am doing almost the same thing here without any issues.

Hi,

Add a Literal control to your web form.

In your Click method use this code:

literal1.Text = "<script type=\"text/javascript\"> alert('Hello world!');</script>";

Dont forget to clear Text property in another postbacks.

Use ScriptManager.RegisterStartupScript, instead of the ClientScript class' method.

Can anyone tell me the solution for this?

Me too getting the same issue.

Thanks,

Jasmeeta.

Calling An UpdatePanel Update from Javascript

From client side javascript I want to invoke an UpdatePanel's Update event. I do not see any documentation on a method to do this. I found triggers but those are based upon controls, I want to do this purely via javascript.

I wonder if
the internal method Sys.WebForms.PageRequestManager _updatePanel Method does the job.

calling a server side method to rebind and refresh a datalist in updatepanel without a ful

I have 2 datalists:

datalist1 (inside UpdatePanel1)

datalist2 (outside UpdatePanel1)

I have a ImageButton inside the datalist2 & when it is clicked, in the datalist2_ItemCommand event, I am updating some information in the database & calling a DataBind() on datalist1 & then calling an Update() method of UpdatePanel1.

This works fine, but my problem is that because of the datalist2_ItemCommand getting fired, a full postback occurs as well. How do I avoid this? I just want the datalist1 to be refreshed inside the UpdatePanel & not refresh the datalist2 at all.

If I use Web Service method, then I can do the database update in it, but I am unable to access the datalist1 to rebind it and also the UpdatePanel1 to update it.

Can someone please help me.

Thanks

Hi,

You canregister theItemCommand event ofdatalist2as a trigger of the UpdatePanel in whichdatalist1 is contained.

<Triggers>
<asp:AsyncPostBackTrigger ControlID="DataList1" EventName="ItemCommand" />
</Triggers>

Best Regards,

I had logged this issue in another forum my mistake and it got moved in this forum only after I logged it again as a new post (link below):

http://forums.asp.net/p/1180380/2000803.aspx#2000803

Thanks for your help.

Calling a Script in UpdatePanel

I am having a problem calling javascript from within an update panel.

Here is what I have set up:

When you select a given index on a dropdownlist, the updatepanel is populated with a custom control I built that loads a wysiwyg editor (widgeditor). The editor requires a javascript call to initialize, but the script (which is registered within the UpdatePanel's control collection), does not fire. In fact, no scripts will fire...

I tried using RegisterStartupScript, RegisterLoadScript, and adding a script via a ScriptManagerProxy.

Any thoughts? I feel there must be a way to accomplish this.

Thanks!

Ben

hehe, from the department of answering my own questions:

I found my big lead here - using the ScriptManager.RegisterScriptBlock:

http://forums.asp.net/2/1550428/ShowThread.aspx

...and updated it using the ScriptManager.RegisterStartupScript ... which made everything work lovely.

I figured there was a good answer to this problem.

Ben

Calling a JavaScript function after return from callback in UpdatePanel

Hi all.

I am trying to solve this focusing problem inherint in Atas, I have a 90% generic solution, but am missing the last piece to the puzzle.

I need a way to invoke a JavaScript function after the UpdatePanel has returned from a server callback.

I know this is pretty simple to do without an UpdatePanel, unfortunately I am kinda tied into the UpdatePanel.

Any help??

Thanks

Hi,

I had the same problem. This is the solution I could found.
See this post for reference:http://forums.asp.net/thread/1290506.aspx

function pageLoad()
{
$object("_PageRequestManager").propertyChanged.add(BindOnLoad);
}

function BindOnLoad(sender, args)
{

if (args.get_propertyName() == "inPostBack"){
if (!$object("_PageRequestManager").get_inPostBack()){
AtlasPostBack();}
}
}

function AtlasPostBack()
{ //Runs at every postback. This allows us to run things that need to be taken care of
//after postbacks

alert("partial postback is done");
}

Thanks,

I also found that from the server side, registering a script as a startup script will make it fire on every callback.

Page.ClientScript.RegisterStartupScript.

Callback to server (by javascript) which updates an UpdatePanel

I already posted this in http://forums.asp.net/thread/1178950.aspx
but it seems to be a very general questions about callback in ASP.NET 2.0

I have a custom (image map like) control which reacts to clicks bya javascript. the javascript part sets postback values like x, y, andraises a postback by form.submit().

Now when I place thiscontrol on an UpdatePanel, the javascript:form.submit() raises apostback, but not a partial postback...

Do I have to register thejavascript somewhere else (expect RegisterClientScript or so)?

Or isthere a way to make a postback in order that the server updates theUpdatePanel with a new image?
I tried the Callback (implementing ICallBackProvider), but this seems only to be for delivering a stringvalue from server to client (at least I couldnt kick off any partialupdate of the page..)

Regards,

RayHi Ray,

Executing form.submit() will never cause a partial postback. A partial postback occurs within an UpdatePanel if the following is true. The control causing the postback is within the UpdatePanel or the control causing the postback is setup as a trigger of the UpdatePanel. These are the two situations that cause a postback.

In your case, there are a couple of options (or lots of options that I can't think of).

One option is that your custom control's click event could cause a postback. Causing a postback boils down to executing a JavaScript command: "__doPostback(params);". I'm not sure how you're registering the client side JavaScript that sets postback values X and Y, but you can generate the necessary JavaScript to cause a postback by executing "Page.ClientScript.GetPostBackClientHyperlink (params)" in code behind. You then associate this code with the onclick clientside event by executing "this.Attributes.add("onclick",postbackCommand)." It seems that this line of JavaScript would go after whatever other clientside code you needed to execute that set X and Y.

If for some reason doing it this way is not an option, you can always place a hidden button (not .NET hidden but CSS hidden) within the UpdatePanel and programmatically through JavaScript, click it. This presents some problems because you have to have the ClientId to find the exact button you need, which can be difficult as .NET generates this Id for you based upon control hierarchy.

So those are two options for causing a postback in your situation.

Hope this helps.

- Joel

Hi Joel

Thank you, the first option (__doPostback) works great for me.

Regards,

Ray

Callback after UpdatePanel

Is there a way to use a callback function in JavaScript after UpdatePanel complete

just like you can do when using a web service or PageMethods?

As so far, you?can?not?use?a?callback?after?asp:Update?is?updated?completely.Maybe?this?could?be?implemented?in?the?near?future.But?
you?can?define?a?LoadCompleted?event?in?a?custom?UpdatePanel?and?then?call?a?callback?after?it?updated?completely.?
If you would like to use callback,web service or PageMethods is better selection.
Wish this could give you some ideas.
yes but the only problem is that in web service or PageMethods (static) you don't have access to the controls on the page.

I found a solution to my problem.

and it is very simple also:

<script type="text/javascript" language="javascript">
var prm = Sys.WebForms.PageRequestManager.getInstance();
prm.add_pageLoaded(PageLoadedEventHandler);
function PageLoadedEventHandler() {
// custom script
}
</script>

Call method of Master page from Update panel

Hi,

How to call the method of master page from the UpdatePanel. Do I need to write a trigger? Provide the syntax.

Calling your master page from an update panel is no different from doing it on a "normal" page. All you need to make sure is that you have added a reference to your MasterType in your aspx code:

<%@. MasterType VirtualPath="~/MasterPage.master" %>

Then you can do Master.SomeMethod() from your page.

Hi,

Thanks the above code is already added. I have implemented the same, it is woring fine for the controls outside the Update panel. Same method call is not supported from update panel.

Jist of what I am looking at:

I want to display a message in the master page, which is a UserControl. I am facing the problem in invoking a method of UserControl in Master page from child page, all the controls in child page are embaded in the UpdatePanel.

Can you provide the syntax for the same

How the following line of code can help me?

ScriptManager.GetCurrent(this.Page).RegisterAsyncPostBackControl( );

Hi,

Thank you for your post!

To invoke a method of UserControl in Master page from child page? or fire an event of the UserControl?

Invoke a method of UserControl in Master page from child page lkike this!

UserControl uc = ((UserControl)Master.FindControl("uc1"));
uc.yourmethod();

If you have further questions, let me know.

Best Regards,

Call javascript function after UpdatePanel

Greetings, I have an UpdatePanel that gets triggered by a ControlEventTrigger button
click event. My question is this:
After the Update (request) is complete, I need to run a javascript function to do some work.
Is there a sort of "OnRequestComplete" property that I can use to specify the names of the JS functions that i want to run?

Thanks.

There isn't anything like OnRequestComplete that you can use. However, this is possible. In whatever server-side code that is executed.

ClientScript.RegisterStartupScript(Me.GetType(),"alert('Update done.');",true)

rchern13, the example you gave me above works fine.
ClientScript.RegisterStartupScript(Me.GetType(), "KeyName", "alert('Update done.');" ,true)

but if I put the alert inside a function, the function doesn't run.
ClientScript.RegisterStartupScript(Me.GetType(), "KeyName", "function update() {alert('Update done.');}" ,true)

Any thoughts? Thanks.

Where do you call the update function?

Hey guys please note ..

If you want the script to be registered at runtime you must make sure that the page does postback andthis should not be an atlas post back because in such case the script will not register or fire the required command

It should be done in PageLoad Event of the Asp.Net Page

or if you are not using Atlas in you application to display messages you can use the following code

Sub AlertMessage(ByVal StrMessage As String)
Dim strScript As String = "<script language=JavaScript>"
strScript += "alert(""" & StrMessage & """);"
strScript += "</script>"

If (Not Page.ClientScript.IsStartupScriptRegistered("Alertscript")) Then

'For asp.Net 1.0 and +
'Page.ClientScript.RegisterStartupScript("clientScript", strScript)

'For asp.Net 2.0
Page.ClientScript.RegisterStartupScript(Me.GetType, "Alertscript", strScript)
End If
End Sub

Asifsolkar, I disagree with you. I have a page with a structure like the following:

Page
--Update Panel
--Details View
--Command Button

The command button event handler includes the following line:

ClientScript.RegisterStartupScript(

Me.GetType,"approve","alert('" & str &"'); ",True)

The final effect of this is that my page inserts the record (the DV is in insert mode by default) into the database and I see the alert without a full postback.

I agree with rchern13. I was registering the function, but not calling it. Once I made a call to my JS functions, things are running as intended.
Rchern13, This forum is lucky to have an expert like you! Your time and help are appreciated.

Thanks.

I'm no expert, just somehow who drove everyone crazy while I was learning Atlas and am now trying to do my part to help the community.

Hi, I need to do that same - but couldnt get it to work withv2.0.50727.60626, does this work with this version? Or is thisthere any alternative?

Thanks
Jim
Yes, it will work. What error are you getting?
Thanks for replying, I wasn't actually getting any error, it's just wasn't firing the alert.

However, I just tried removing the other custom controls from my form(which emit their own JS) and it works... so I guess theres someconflict there.

Thanks
Jim

Call javascript after UpdatePanel updates

Hi,

Is it possible to call a javascript function after the update panel finishes updating? For example - I click on a product which populates a table inside an update panel, when this update is complete I would like to move the div containing the product data to the point where the user clicks. My problem is how to call the javascript that makes this happen.

Thanks for any and all advice / code / links.

Hello,

you need to create a javascript function and bind that to the pageloaded event of the pagerequestmanager class. Here's how it might look:

var prm = Sys.WebForms.PageRequestManager.getInstance();prm.add_pageLoaded( function() { // Your function body comes here});

The pagerequestmanager is responsible for handling the AJAX calls. It has several events that you can handle.

Good luck!

hello.
well, in this case, I'd use the endrequest event of the pagerequest manager since it is called only when the?partial?postback?ends?(and?it's?also?called?when?you?get?an?error?during?a?partila?postback).?the?code?is?the?same?as?the?previous?poster?has?shown;?the?difference is?that?yo?use?the?add_endRequest?method?instead?of?calling?the?add_pageLoad?method.
Correct, my example with the pageloaded will also execute the first time the page loads. That might not be what you need, so go with endrequest like the previous poster said.

You probably want to subscribe to the pageLoaded event so that you can access the panelsUpdated property.

http://ajax.asp.net/docs/ClientReference/Sys.WebForms/PageLoadedEventArgsClass/PageLoadedEventArgsPanelsUpdatedProperty.aspx

Example:

http://ajax.asp.net/docs/ViewSample.aspx?sref=Sys.WebForms.PageRequestManager.pageLoaded

Call Client script from Server Side

Hi All,

I want to call javascript function from server side when I am using updatePanel.

Actual Scenario is as follows:

I have one form A.aspx in which I have a button named "btn_display" and this button is in Update Panel.

Now I call server side function on btn_display_click and from that server side function i want to call javascript function.

How should I proceed??

Plz help

Thanks in advance

HI,
You can use registerclientscriptblock to allow the client script to work from a serverside event

Hello, RegisterStartupScript is more appropriate for this.

Regards. -LV

Call AnimationExtender Animation Programmatically?

Okay, here's what I am trying to do. If you know of a better way, feel free to respond.I have an UpdatePanel that contains a HyperLink and a Timer. The Timer's Tick event will update the HyperLink's Text and NavigateUrl attributes (asynchronously). This works fine.What I would like to do is fade the HyperLink text out just before updating these attributes, then fade in afterwards. I have not figured out any good way of creating an AnimationExtender to hook up to the timer's event, so I thought the best course of action would be to programmatically call the animation in the Timer's Tick event handler.Any ideas?There are some good examples at http://forums.asp.net/thread/1621611.aspx. You can follow the examples for creating the javascript to make and execute AJAX animations. One thing you might consider is having the timer's tick alternate between updating content and starting an animation. This can help with timing. Anyhow, there's several ways to kill this cat, so good luck!

Hi ,

I wrote about this here -->http://blogs.msdn.com/phaniraj/archive/2007/04/13/animations-how-many-ways-do-i-call-thee.aspx

My post describes the different ways to trigger MS Ajax AnimationExtender.

Hope this helps.

Call a page which contains updatepanel

Hi,

I have a page say CChildPage which contains an Update Panel.I want to call this page in another page thru

script tag and specifying the src="http://pics.10026.com/?src=CChildPage.aspx" .If i do this it gives me a syntax error.Is it possible to call a page like this.

The code is as follows :

<body><form> <table><tr><td>

<script src="http://pics.10026.com/?src=CChildPage.aspx" ></script>

</td></tr></table> </form></body>

Regards,

Shweta

Shweta mehta:

I have a page say CChildPage which contains an Update Panel.I want to call this page in another page

Basically you want to go from your current page to your new cchildpage right?

You can either use hyperlinks to do this or use javascript to change the document.location

You can use hyperlinks like this and the user will click on the link

<a href='cchildpage.aspx'>My Page</a>

Or you can use javascript

document.location.href = "the url of yourcchildpage.aspx"

No i dont want to go from current page to new page

I want to call my child page inside the new page and also it shld be placed under the table tag.If the child page is called in this way and if it contains UpdatePanel then it doesnt wrk and gives syntax error.

Please help me on this.

Regards,

Shweta

Hi Shweta,

I think iFrame is a good choice for nesting a page inside another. Like this:

<body><form> <table><tr><td>

<iframe src="http://pics.10026.com/?src=CChildPage.aspx" ></iframe>

</td></tr></table> </form></body>

Hi,

Is there any other way as i dont want to use iframes.

Iframe is the way to go...Looking at what you need to do, since its just display one page insider another,if I were you , would choose iframes.However is there any particular reason you do not want to use iframes?

http://www.jsworkshop.com/articles/02scriptsrc.html

Check this out

Calender Extender

HI All,

Am having a Calendar Extender inside a FormView and Formview is Inside UpdatePanel.
Problem am facing is that Calendar Comes Messy when it get activated. I tried CssClass but its not working.

Any Solution?

Hi Barrysuku,

To troubleshoot this issue, we really need the source code to reproduce the problem, so that we can investigate the issue in house. It is not necessary that you send out the complete source of your project. We just need a simplest sample to reproduce the problem. You can remove any confidential information or business logic from it.

Best regards,

Jonathan

this is a common issue that has a workaround on codeplex...I dont remember the link but all you need to do is put another calendarextender in your updatepanel and hide it via css

HI Jonathan,

I was able to solve that problem what i did is i added css class for CalenderExtender and its working fine now.

Now am having two issues if you can solve those for me.

First is how dela with FileUpload inside Updatepanel as am not getting filename.But when in scriptManager if i disable EnablepartialRendering to false then it works.Temporary am doing this.

Second how to load TreeView with ObjectDataSource or DataSet

Thanks

Regards

Barry

Hi Barrysuku,

In this thread, we are mainly discussing aboutCalenderExtender ,as indicated by the first post and the title.

Since your new question is not directly related to the original issue, it would be best if you open up a new thread for the new question. In this way, our discussion here will not deviate too much from the original issue. This will make answer searching in the forum easier and be beneficial to other community members as well.

Thank you for your understanding.

Best regards,

Jonathan