AJAX :: Javascript Didn't Called On Postback

Nov 24, 2010

i have two dropdownlist (Country, and State) so when the user select the "country" the "state" will be filled.

So on postback the ajax will work, and i have some javascript function that called on thIe page load.

the javascript didn't called.



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AJAX :: RegisterDataItem Can Only Be Called During An Async Postback

Oct 25, 2006

I'm trying to use the popupcontrol from the Ajax Control Toolkit, but I get the following error message:

"RegisterDataItem can only be called during an async postback "

during the call "PopupControlExtender1.Commit(Calendar1.SelectedDate.ToShortDateString());"

[Code]....

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AJAX :: External Javascript Not Called While Calling It From A Control Inside Modal Popup?

Mar 27, 2010

I am getting an error while calling a javascript from a dropdownlist which is placed inside a modal pop-up panel. if i am ebeding a small script like onchange="javascript:alert('hello');", it works fine. But if i m using <script> </script> for embeding a javascript its showing 'object doesn't support this property' error. when i debugged it the compiler does not get into the javascript function.

Below is a screenshot of that page.

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GridView Does Not Databind/refresh Upon Postback Unless The Postback Is Called By Itself?

Jul 24, 2010

Anyone with similar conclusion? GridView does not databind/refresh upon postback unless the postback is called by itself?

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AJAX :: Fire A Javascript Onclick Function Before The Server Side Event(SelectedNodeChanged) Called?

May 12, 2010

I have developed a web application which contains aspdotnet treeview control. In this treeview control has binded with some database value.. that controls has one parent node and more than one child nodes for each parent node.

my problem is here, when the user clicks the parent node, I need to fire a javascript onclick function before the server side event(SelectedNodeChanged) called..

If I provide javascript to the parnet node when it is binding, then I could not fire the server side event(SelectedNodeChanged).

How to provide onclick javascript event for parent node in treeview control even the parent node has SelectedNodeChanged event.

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Javascript - Div Above Another One JQuery Script Didn't Work?

Jan 19, 2011

I have two divs, and I just want the second one to be under [in z-index] the first one, I read about it here and I figured out that I have to use the following JQuery script:

<script type="text/javascript">
$('#secondDiv').insertBefore('#firstDiv');
</script>

I tried it, but it didn't work with me,

<DetailedTemplate>
<div id="firstDiv" style="background-color:Black">
<asp:ImageButton ID="SelectButton" Visible='<%# org.SelectedValue == null || Container.DataElement("ID").ToString() != org.SelectedValue.ToString() %>' runat="server" CommandName="Select" CommandArgument='<%# Container.DataElement("ID") %>'
OnPreRender="SelectButton_PreRender" style="border-style:none; Height:58px; width:113px; cursor:hand" ImageUrl="~/Contents/Images/item-background.png"/>

[Code]....

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OnLoad Not Being Called On Postback?

Mar 4, 2009

I have a composite control that's in a webform. The OnLoad method in this control is where i'm opening up the database connections to be used in the control. Everything works fine when the control is loaded, but when the control is posted back to, the database connections aren't being opened, almost as though OnLoad isn't being called on postback...

like this:

protected override void OnLoad(EventArgs e)
{
// open database connections here...
}

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Javascript - How To Display Modal After Postback Without Ajax

Aug 16, 2010

I have an ASP.NET button. When the button is clicked, I'd like a modal popup to display after the server-side code for the button runs. I don't want to use the ASP.NET Ajax control toolkit modal popup extender.

With ASP.NET Ajax, I can hook into the end request event. Is there a way to do this without ASP.NET Ajax. just jQuery? I basically want to run some javascript after the server side click code runs, after the postback.

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How To Generate Ajax Postback For Only One Updatepannel In Javascript

Feb 15, 2011

when I click a button the content inside my updatepannel changes. The id of the button is set as a trigger for the updatepannel, so that the other updatepannels are not affected. How can I replace the buttonclick event with a page load event? Is there a way to specify the pageload javasript event as a trigger for the updatepannel?

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AJAX :: Javascript Not Firing After Asyncronous Postback?

Sep 8, 2009

I am trying to use Jquery + prettyPhoto to display images in a gridview that is also in an update panel.

The js scripts work with the images in the gridview up until an asyncronous event happens inside the update panel. At this point the js scripts are "lost". I have researched and tried many different options but none seem to work. I have included the parts of code that matter.

Once the "Add to cart" button is clicked and the asyncronous postback is fired, the images no longer are connected to the prettyPhoto scripts like they were on page_load.

[Code]....

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AJAX :: Postback After Calling A Webservice From JavaScript?

Mar 23, 2011

I have a page that calls a webservice from JavaScript using the approach described in this article: [URL]

This is working fine. The problem is when the page causes a postback before the end of the execution of the webservice's method. When that happens, the succeeded callback method never gets called. Does anyone know if there's a workaround to this?

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AJAX :: Postback Creating JavaScript Code?

Jan 21, 2011

A have a web page that does an AJAX callback. When the CallBack event is handled, my ASP.NET code generates some JavaScript that is then returned to the browser. The idea is that this JavaScript will then immediately be executed. The reality is that it isn't....

Here is an example of my server code that handles the callback (the JavaScript has been simplified to a single alert):

[Code]....

I've tried using some of the browser DevTools in IE, Firefox and Chrome, but I can't get them to spot changes after an Ajax event...]

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AJAX :: Went Through The Galleries And Samples And Didn't Find It There?

Nov 6, 2009

I had someone show me an ajax control and now I can't remember which one it is. I went through the galleries and samples and didn't find it there, although I could swear that's where it was...It basically launched a window when you hovered over or clicked on a line of text. Kind of like a tool tip, but more elaborate, where the text box does a couple of twirls and then presents itself. It has an "x" out in the top right that when clicked returns the window back to the line of text.

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AJAX :: Losing Javascript Events On Async Postback?

Apr 27, 2010

I am creating a ASP.Net server control to manage locations. The control is a composite control containing several text-boxes, labels, and a link button. I use the AJAX Control Toolkit to provide a modal popup which contains a Bing map. All the Javascript is in its own file and used as an embedded web resource.

The link button is what opens the modal popup. It also needs to call a Javascript function that initializes the Bing map (onclick = "GetMap();"). There are instances when this server control is placed within an Update Panel (and there is no way to avoid this). When in an Update Panel the link button loses its onclick event. I understand that this is because during an async postback the portion of the DOM that defines the content of the Update Panel is thrown out and reinitialized, resulting in the event breaking. When the control is not in an Update Panel everything works as intended.

I have tried registering events on Page.Load and Page.Init, like so:

[Code]....

I have also tried flat out writing the function call to the page:

[Code]....

I have put breakpoints on the lines inside each delegate and they do not get hit. I am not aware of any special way to register events of a composite control's child control or the Page.Load/Page.Init events when being done inside a server control. Is there some special way to register these events? (Note: Both those code blocks above are in my CreateChildControls() method)

Below is the GetMap() Javascript function. As you can see it is pretty straight forward.

[Code]....

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AJAX :: Refreshing Update Panel Through Javascript Postback?

Mar 17, 2010

In one of my webpage, I have a parent window where i have a datalist with 10 rows of images. when i click any image a pop up window(child window) opens.

The child window has a form to be filled by user. Once user fills this form, he will press the save button. Once the save button is clicked, the child window should be closed and the datalist(in the update panel) in the parent window should be refreshed.

This is how I am trying to achieve this. On click of the save button a javascript function is being called of the parent window like this: window.opener.refreshDataList();

in the refreshDataList() function I have written the following code:

{
childWindow.close();
__doPostBack('ctl00_ContentPlaceHolder1_UpdatePanel1', '');
}

This works like a charm in Internet Explorer. However in Mozilla and Chrome it doesnt work. While testing this I added an alert statement ind the refreshDataList() function like this..

{
childWindow.close();
alert("Testing");
__doPostBack('ctl00_ContentPlaceHolder1_UpdatePanel1', '');
}

Once I added the alert statement, It started working in both mozilla and chrome.

So I realize that It could be an issue related to focus. I have done window.focus()

but still its not recieving any focus and not working in Mozilla and Chrome.

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AJAX Partial Postback / Dynamic JavaScript Values?

Jan 20, 2011

I am working with a user control which is inside an UpdatePanel. The user control uses swfobject to add a flash object to a div in the user control. Part of the functionality of the user control is it allows the user to change 'channel'. The channel is set and handled in the code behind hence the call in the JavaScript below to <%=channel%>.

The problem I have is that when the new channel is saved, the JavaScript code below is still pointing to the old channel. The only way I can fix this is to refresh the page via the code behind, but I'm thinking there must be a better way to do this..

[Code]....

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Ajax - Wiring Up JavaScript Handlers After A Partial Postback?

Jun 1, 2010

I am trying to use LinkButtons with the DefaultButton property of the ASP.NET Panel in an UpdatePanel. I have read and used the various other answers that are around describing the wiring up of the click event so that a full postback is not done instead of a partial postback. When the page loads, I wire up the .click function of the LinkButton so that the DefaultButton property of the ASP.NET panel will work.

This all works fine, until you bring an UpdatePanel into the mix. With an UpdatePanel, if there is a partial postback, the script to wire up the .click function is not called in the partial postback, and hitting enter reverts to causing a full submit of the form rather than triggering the LinkButton.

How can I cause javascript to be executed after a partial postback to re-wire up the .click function of the LinkButton? I have produced a sample page which shows the problem. There are two alerts showing 1) When the code to hook up the .click function is being called, and 2) When the .click function has been called (this only happens when you hit enter in the textbox after the event has been wired up). To test this code, type something in the textbox and hit Enter. The text will be copied to the label control, but "Wiring up Event Click" alert will not be shown. Add another letter, hit enter again, and you'll get a full postback without the text being copied to the label control (as the LinkButton wasn't called). Because that was a full postback, the Wiring Up Event Click event will be called again, and the form will work properly the next time again.

This is being done with ASP.NET 3.5.

Test Case Code:

[Code].....

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AJAX :: Hammering Partial Postback With A Slider And Javascript?

Nov 2, 2010

I have a JavaScript slider which calls the follow functions:

var prm = Sys.WebForms.PageRequestManager.getInstance();
prm._doPostBack('ZoomButton1','');

The ZoomButton1 is tied to an UpdatePanel and does a partial postback. In this case, when the Slider is constantly be dragged left and right, the value is changing/updating and JavaScript is hammering the postback extremely fast. It is so fast, the server sometimes but not always reports a pagerequest manager error, I believe.

I know that I can set it to just update my data (updatepanel) on a button_release or a mouse-up.. but occasionally, I still encounter the pagerequest manager error.

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Web Forms :: Why The Method LoadViewState() Is Not Called After The Postback

Sep 7, 2010

I can't understand why the method LoadViewState() is not called after the postback in my code below.After label1 cahnges its text the "__VIEWSTATE" hidden field is modified, but LoadViewState() is not called.

[Code]....

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AJAX :: EnableEventValidation / EnablePartialRendering (tue / False) Didn't Work

Mar 31, 2010

I have been using gridveiw to show uploaded files after that I have already put the new column to download these files. If I will put EnableEventValidation="true" and EnablePartialRendering="true"(ToolkitScriptManager), it is didn't work and error messages apperar like this:

Server Error in '/POV2' Application. Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentException: Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page nableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. Source Error:

[Code]....

Stack Trace:

[Code]....

[ArgumentException: Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.] System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument) +173 System.Web.UI.Control.ValidateEvent(String uniqueID, String eventArgument) +72 System.Web.UI.WebControls.HiddenField.LoadPostData(String postDataKey, NameValueCollection postCollection) +46 System.Web.UI.WebControls.HiddenField.System.Web.UI.IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection) +13 System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad) +346 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1743

If I will put "false", it is okay, I can download but updatepanel is didn't work. So my page refreshed when I click any events.

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Javascript - How To Return Data After AJAX Postback Back To The Client

Feb 4, 2010

I have a simple question - I use update panel with custom server control inside. I call __doPostBack from javascript and RaisePostBackEvent on the server fires (I implement IPostBackEventHandler).This is client to server call. Could I return data back to the client (after this partial postback)? What is the best way to achieve this?

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AJAX :: PageMethods OnSuccess Event Didn't Work In Firefox?

Jul 18, 2010

i write a page method and some sort of javascript to work with that method, everything fine in any browser but firefox!

[Code]....

<input id="offcheckcid" type="button" value="بررسی کلوب آی دی" onclick="CheckCloobID('offline');" style="color: Black;"/>
function CheckCloobID(sender) {
var id;
var email;
var button;
id = $get("ctl00_ctl00_cph1_cph1_offcid");
email = $get("ctl00_ctl00_cph1_cph1_offcpe");
button = $get("offcheckcid");
button.value = "کمی تامل نمائید...";
button.disabled = true;
id.disabled = true;
email.disabled = true;
PageMethods.CheckCloobID(id.value, email.value, 'offline', OnSuccess, OnTimeout, OnFailure);
}
function OnSuccess(result) {
var results = result.split("#", 2);
if (results[0] == "Accepted") {
var price = $get("offcut");
price.innerText = "30,000- ریال";
var total = $get("offtotal");
total.innerText = "570,000 ریال";
var button = $get("offcheckcid");
button.value = "تائید شد";
}
else {
alert("...کلوب آی دی و ایمیل محرمانه وارد شده وجود ندارد یا قبلا تخفیف گرفته است");
ActivateButtons();
}
}

the problem: onsuccess event did not work in firefox, no error message displayed in firebug...

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AJAX :: Use JavaScript To Validate Dynamically Created Controls Without Generating Postback?

Feb 2, 2010

I have a small form with some static elements that I am able to access with javascript the bring up a popup. 4 textboxes are generated and attached to a updatepanel. I've been trying various methods of validating the contols without generating postback.

I found anytime i registered a javascript to the scriptmanager the page must refresh.

Is there anyway it can be done?

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AJAX :: CollapsiblePanel Didn't Show Animation When Deploy On Win2003 Server?

Jul 19, 2010

In my ASP.net application i used AJAX Collapsible Panel, its working fine on my local system but after publishing and deploying on win2003 server, panel is in expand mode and dont show animation on click and also on that web form asp menu is not showing submenus. It all happens on clients machines. On server it still somehow showing some animation.

<asp:ToolkitScriptManager
ID="ToolkitScriptManager1"
runat="server">

[code]...

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JQuery :: Define Function With Name And Called In Javascript?

Apr 2, 2011

I have asp.net webpage in that image div should change image when a button is clicked. I want to add fade in and out effect so I use jquery. The code is

[Code]....

But image never is changed. So I think something wrong with ChangeImage().

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.net - Javascript Slash Is Missing When Called In Argument

Dec 24, 2009

i am passing a path as an argument in a javascript. for example i am passing a path as c:my documentsuseraa.jpg when registering javascript in client side.

but when calling this in a function say, function js(d) then the slash goes missing..hence the value of 'd' becomes c:mydocumentsuseraa.jpg

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When The Page Is Loading, The Image Gets Really Big, Then Shrinks Down Being Called By The Javascript?

Feb 16, 2010

I have an image control that puts user's photo in it. Once it's loaded, I resize it using the javascript.But the thing is, when the page is loading, the image gets really big, then shrinks down being called by the javascript. Is there a way for me to pre-load the image before displaying it? I do'nt want to set the image control's width and height to fixed pixels at this point.

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Web Forms :: Display Javascript Confirmation Box Called From Code Behind?

Oct 30, 2009

I am trying to display a js confirmation box from code behind.

[Code]....

[Code]....

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Web Forms :: Executing Javascript Functions Called By RegisterStartupScript?

Jan 27, 2010

i think The javascript function called by using RegisterStartupScript or RegisterClientScriptBlock executed after the code in the method is executed.I want to execute the javascript function called by RegisterStartupScript or RegisterClientScriptBlock to be executed before the code in buton click method is executed. For that what should i do?

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MVC :: Can't Reach Controller - Javascript Library And Method Called From View

Jul 23, 2010

I have a javascript library and in there i have a method that is called from my view. Here it is:

<li><a href="javascript:void 0" onclick="deleteAll('image', '<%= ViewData["FileGroupId"]%>')"><div><%=GetGlobalResourceObject("default", "Delete_all") %></div><div></div></a></li>
and here is my js code in the javascript library:
var deleteAll = function(module, groupId) {
jConfirm(_deleteConfirmAll, _deleteAll, function(r) {
if (r) {
showProgress();
$.ajax({
cache: false,
type: "POST",
url: _baseUrl + "/" + module + "/deleteall/" + groupId,
success: function(msg) {
if (msg == '0') {
location.href = _baseUrl + '/' + module;
}
else {
jAlert(msg, _errorTitle);
}
hideProgress();
}
});
}
});
}
My problem is that i cant reach my controller. Here is my controller code:
#region common methods
List<.CMS.Core.File> GetList(int groupId)
{
List<CMS.Core.File> list = new List<CMS.Core.File>();
CMS.Core.FileFilter filter = new CMS.Core.FileFilter();
filter.GroupId = groupId;
int res = CMS.Core.File.Search(_connection, filter, ref list);
return list;
}
#endregion
public ActionResult DeleteAll(int groupId)
{
List<CMS.Core.File> list = GetList(groupId);
foreach (File item in list)
{
item.Delete();
}
return Json(list);
}
And at last her is my Index method
public ActionResult Index(int? id)
{
if (Request.IsAjaxRequest())
{
JsonPaging paging = new JsonPaging();
int offset = 0;
int page = 0;
if (!String.IsNullOrEmpty(Request.QueryString["page"]))
{
Int32.TryParse(Request.QueryString["page"], out page);
}
if (page > 0)
{
offset = (page * paging.PageSize) - paging.PageSize;
}
FileFilter filter = new FileFilter();
filter.Deleted = false;
filter.MaxRecords = paging.PageSize;
filter.Offset = offset;
if (!String.IsNullOrEmpty(Request.QueryString["keywords"]))
{
filter.FilterType = FilterTypes.AND;
filter.Name = Request.QueryString["keywords"].ToString();
}
if (!String.IsNullOrEmpty(Request.QueryString["sort"]))
{
filter.OrderBy = Request.QueryString["sort"].ToString();
if (!String.IsNullOrEmpty(Request.QueryString["direction"]))
{
filter.OrderBy = filter.OrderBy + " " + Request.QueryString["direction"].ToString();
}
}
if (id > 0)
{
filter.GroupId = id.Value;
}
List<CMS.Core.File> items = new List<CMS.Core.File>();
int results = CMS.Core.File.Search(_connection, filter, ref items);
foreach (CMS.Core.File current in items)
{
JsonItem item = new JsonItem();
item.Id = current.Id;
item.Name = current.Name;
item.ImageText = current.ImageText;
item.Aperture = current.Aperture;
item.TakenOn = current.TakenOn;
item.Camera = current.Camera;
item.ExposureTime = current.ExposureTime;
item.FocalLenght = current.FocalLenght;
item.Tags = current.Tags;
item.Url = current.Url;
item["Active"] = current.Active.ToString();
item["Created"] = current.Created.ToString();
paging.Items.Add(item);
}
return Json(paging, JsonRequestBehavior.AllowGet);
}
else
{
ViewData["FileGroupId"] = id;
return View();
}
}

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