Basic concept of AJAX is to cause Partial post back of the Page. If we use AJAX, Page Load occurs, than what is the difference between normal Pages' Page_Load event (without ajax) and Page load event of a Page with ajax.
View 10 RepliesI have multiple update panels in a page. how I can know which update panel caused partial page updation on client side before page is partially updated?
View 3 Repliesim using a init function after partial postback again the init function is not calling.
<asp:ScriptManager runat="server" ID="MainSM" EnablePartialRendering="true">
<Scripts>
<asp:ScriptReference Path="~/JS/menu.js" />
</Scripts>
</asp:ScriptManager>
<script type="text/javascript">
menu.init("class");
</script>
this script works fine but after partial postback again this init function is not working. So i searched in google i found some articles regarding this [URL]
<script type="text/javascript">
function pageLoad() {
// Initialization code here, meant to run once.
</script>
this works fine when it was postback,but without postback this init function is not working
watch here:
- Create a gridview with AllowPaging and AllowSorting = true
- On page load, I bind it to datasource (in my case a webservice)
- On gridview's rowcreated event, I dynamically add image buttons on the header of the grid for sorting (up/down arrows). On header I have column name and the image. I removed the Column name default sorting link. So user can now only click the image button for sorting.
- Call sorting method
This works perfectly fine without AJAX. The paging, sorting works fine. Also when I apply AJAX the paging works fine. But the sorting is doing a full post back instead of partial postback.
I have my gridview within UpdatePanel and Triggeres is set on gridview sill it doesn't work.
[Code]....
Code Behind:
[Code]....
Page_load event fires two time in firefox and the same page is working fine in IE. What might be the problem? If it is problem with Autoeventwireup then page_load event must fire two times in IE too. I believe it is not a issue of Autoeventwireup.
how can i find out exactly where the issue is.
I have a page which contains linkbuttons and panels. all panels have DetalilView and gridView controls. On click of linkbutton, panel's visibility is set. everything works fine on my local server. But on production server, no events of Button, DetailsView and GridView fires.
View 5 RepliesI have a dynamically created user control which is accomplished usingLoadControl().
When I debug, the LoadControl call is called once, however the Page_Load inside the user control is called twice. On each occasion, the postback property is false, so it seems somehow the Page_Load event is called outright 2 times and nothing to do with any postback?
I've got an website that needs to know when someone has closed a details page. Is there a way to fire a post back using Javascript to call a particular Sub or Function on the Unload event?
View 2 RepliesI've tried to wrap up my problem with a complete example below - the original problem is part of a jQuery plug-in that I'm writing to extend the behaviour of an ASP.NET ajax application I already have.
The aspx page below has one drop down list which is marked for auto post back. I've also bound a change event using jquery (which ultimately I will swap for a .live() event to maintain the binding after the update panel refresh.) The problem is, when the jQuery event is bound I see two ajax begin requests and page_loads fire but only one ddlTest_OnselectedIndexChanged event. One of the page loads is malformed too - the content-length states it's about 300 bytes long whilst the totalBytes is 0 and form data empty. This does not happen if I bind to the click event of a button.
why the erroneous page_load event is firing ?
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I have used update panel and in that update panel I have kept ASP Table control in which I am creating rows dynamically which in turn contains 1 dropdown lists and 3 text boxes. My problem is that after partial postback text boxes and dropdown list are found but text property of text boxes is showing empty and dropdown list's selected value is set to the first record in that box. I have also stored entire table in session and retrieve it in(!isPostBack) condition at page_load event.
part of my .aspx page is as below
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I want to add one row on every addRowTbn click event there by retaining previous rows.
I have four controls in a page with update panel.Initially mouse focus is set to first control.when I partially post back the page to server the focus automatically moves to first control from the last focused control from the control I have tabbed down to.Is there any way to maintain the last focus?
View 1 RepliesI have put the following method in my master page. It works when I call it on a full post back, but when I call it from a updatePanel's asyncPostBack no alert is shown.
public void ShowAlertMessage(String message)
{
string alertScript =
String.Format("alert('{0}');", message);
Page.ClientScript.RegisterStartupScript(this.GetType(), "Key", alertScript, true);
}
What do I need to do so it works on partial post backs?
I have a very common problem with asp.net . I have designed a webpage that performs some action on its load event but whenever a user clicks on back button those actions are not performed as Page_Load event is not called.I have searched a lot of forums but wasn't able to get a exact answer. All I was able to know that it was happening due to cache memory maintained by browsers. I don't want to delete that cache. I want browser to work in normal way.
View 3 RepliesI searched google and found asynchronise post back trigger is used if we want update panel to post back on some event of control if it is out side the update panel. Than what is purpose of post back trigger ?
View 2 RepliesI have four textbox and a button in my page. After filling the textbox. When the user click save button. A loading image should be displayed. User should not feel that the page is postback to the server,Some thing like in facebook loading image.
View 5 RepliesBeing new to ASP.NET I have run into trouble building my own Whack-a-mole program. I think my problem comes from using Buttons, which by themselves send post backs to the server, making the software unusable. The looks are in place, making new buttons show up in the grid, in different places by random. However, when a button is pushed - the score doesn't change (which I feel is strange).
Not so strange is that the Button doesn't work since it sends post back to the server - reloading the UpdatePanel. I think I should use a different controller like the CheckBox and style it hard using CSS (which isn't a problem). Is this the correct way to go, or should I make use of JavaScript AJAX instead?
Note to self: This technique shouldn't be used in a public application since it put too much unwanted pressure on the web server.
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I have a form with three filed name city and relation.relation filed is a dropdown and on the selection of relation i have to display list of users in grid.I want here to use Ajax or Jquery so that when i select relation not whole page will post to server but only relation and could display list of users in grid.
inside Html Table i have all these fileds( Name,City and Relation).
I have a button like this:
<asp:Button ID="btnSave" runat="server" ClientIDMode="Static" Text="Save" OnClientClick="return ConfirmSave();" OnClick="btnSave_Click" />
If I write my client function like the following, it works as expected:
function ConfirmSave()
{
return confirm('Confirm?');
}
But I should check, inside the function, for the confirm result, like this:
function ConfirmSave()
{
if (Page_ClientValidate('validationGroup'))
{
var conf = confirm("Confirm?");
if (conf)
{
$('#btnSave').attr('disabled', 'disabled');
}
return conf;
}
else
return false;
}
Doing this, the page postback but the server click event doesn't fire.
ones i select file i want to process that file directly not need to click another button to process
View 2 RepliesI've got the an bit of ajax and the succeed runs twice. I've got a global var that I used to keep track.
Code:
var counter = 0
$('#txtLookupText').keyup(function(event) {
$(document).ready(function() {
});
$.ajax({
type: "POST",
url: 'ContactLookup.aspx/LookupContacts',
data: "{'inputStr': '" + $('#txtLookupText').val() + "'}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(msg) {
AjaxSucceeded(msg);
},
error: AjaxFailed
});
});
function AjaxSucceeded(result) {
if (result.hasOwnProperty("d")) { result = result.d; }
var li = ''
for (i = 0; i < result.length; i++) {
li += result[i].FirstName + ' ' + result[i].LastName + '
}
counter += 1
alert(counter)
}
function AjaxFailed(result) {
alert(result.status + ' ' + result.statusText);
}
I moved the counter to the POST and only got one alert box. In the succeed, I get 2 alert boxes in succession.
our application, we use master page and inside master page we have aspx that loads certain controls in Update Panels via ajax calls. Depending on the left menu link clicked (which is also inside update panel), the content in another update panel would be loaded with appropriate user controls. Our issue is when the user cliecks on "Cancel" button in user control that is been loaded by Ajax call, we need to traverse back to the previous control or page.
View 1 RepliesI have noticed that window.onunload event fires off AFTER page_load event which makes no sense.
This behaviour is creating an issue for me - in my unonload I clear the session, so if the Page_Load first BEFORE onunload, there are errors on the page displayed.
I would expect the javascript onunload to fire BEFORE Page_Load....is that the correct assumption?
TO CLARIFY: Let's assume I am on page test.aspx, then I click on the link that goes to the same page (say I click on a menu), what I observe is that Page_Load fires first, then onunload fires off.
Makes no sense at all.
I want to clear the textbox control in the modalpoput at a time of showing it, but i dont know which event fires while ModalpopupExtender show time.
View 2 RepliesI have a web page with a nested grid. I bind the nested grid via the outer Gridviews RowDatabound. The problem I'm having is when a user click on a CommandField in the nested child grid the Page_Load event is fireing twice and reloading the grids, making it appear that the nest grid collapsed. I have tried using "If Not Page.IsPostBack" but because the page posts back twice the IsPostBack is false until the second time the Page_Load event fires.
Here is my Page_Load routine
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim test As Boolean = ScriptManager.GetCurrent(Me.Page).IsInAsyncPostBack
If Not Me.Page.IsPostBack Then
If Not ScriptManager.GetCurrent(Me.Page).IsInAsyncPostBack Then
[Code].....
I do not seem to be able to capture the tab index when clicking tabs
Code:
<cc1:TabContainer ID="TabContainer1" runat="server" Height="20px" ActiveTabIndex="0"
OnActiveTabChanged="TabContainer1_ActiveTabChanged" AutoPostBack="true">
Code:
Protected Sub TabContainer1_ActiveTabChanged(ByVal sender As Object, ByVal e As System.EventArgs)
Dim myint As Integer
myint = TabContainer1.ActiveTabIndex
End Sub
The event fires in the code behind fires but my tab index is always 0.