Javascript - ASP.NET: UpdatePanel & OnLoad Event?

Aug 8, 2011

I'm trying to execute some javascript code on my UpdatePanel's OnLoad event like so:

<asp:UpdatePanel ID="updDropDowns" runat="server" OnLoad="javascript:ResetButtons();">

But I keep getting "'javascript' is not a member of ASP.reasons_aspx".

I tried doing

Me.updDropDowns.Attributes.Add("OnLoad", "javascript:ResetButtons();")

But I can't reference the 'Attributes' property of an UpdatePanel in the VB code-behind.

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Run JavaScript Function On The Page Onload Event In Content Page Of Master Page?

Nov 4, 2010

HOW TO RUN THE JAVASCRIPT FUNCTION ON PAGE ONLOAD EVENT IN CONTENT PAGE OF MASTER PAGE.? means i have masterpage and the content page of master page namely default.aspx in vb.net.i wanna run javascript function in Default.aspx and i have called the function body onload in master page.when i run my website it shows the error "" Microsoft JScript Runtime Error : Object Expected ""

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JavaScript To Run After OnLoad But Before Any Function To Set Defaults

Sep 7, 2010

So I have an .aspx page loading up and populating drop downs based on a lookup table in the database. What we want is for the user to be able to configure which of these values comes defaulted by specifying that value in a drop down somewhere else in the app. Now, it's easy to default the "first" value, or something like that, but we want this to act differently. Is there a JavaScript function that can run immediately after onLoad (so the drop downs are populated already), that can go through the drop down and make one of those default so it looks like the page is loading with that set as default and people don't realize the workaround? (weird masking, etc.)

Here is an example of how we add the dropdown control to the page:
With CType(.AddControl(New Controls.ComboBox("CodeId", "../../../../CodeId", "Code")), Controls.ComboBox)
.ForceSelection = True
.ValueField = "LookupID"
.DisplayField = "LookupDesc"
.Validate.AllowBlank = False
.ForceSelection = True
.ReadOnly = EditControl.IsFieldReadOnly(10580)
.BindData(Model.Codes)
End With

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Asp.net - Running Javascript Whenever UpdatePanel Refreshes?

Aug 10, 2011

I am using an asp.net update panel to refresh the content on a page when a menu item is selected.

Within the content that is updated are images which have a javascript reflection function which is triggered with the following line of code:

window.onload = function () { addReflections(); }

This runs fine when the page is first loaded but not when a menu item is selected and the update panel is run.

On previous projects using jquery code I have replaced document.ready with function pageLoad but there is no document.ready on this page.

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Javascript - Call .js File In UpdatePanel From CodeBehind

Jun 26, 2011

I am have been trying to teach myself ASP.NET and Javascript for a project and have been stuck on one problem for literally dozens of hours now. I found a really nice javascript drag-and-drop list online, copied the source offered and split the css into a .css file, the javascript into a .js file and the HTML and reference into my asp.net page. It worked perfectly. Next, I replaced the javascript list with a static HTML list populated with the same data, wrapped it in an UpdatePanel and set up an "edit order" button to swap the static list's HTML for the javascript list's HTML when the button is pressed.

[Code]...

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Calling Showdialog() On A Form - From The Main Form's OnLoad Event Makes The Modal Dialog Go Away After A Few Seconds?

Aug 7, 2009

I'm having an interesting issue that I can't reproduce on a different project, but can consistently on this one. I have no clue what might be causing it, but am hoping that someone may have seen it before.

I have a main form, from which I run a series of checks. On this form, I have a listview control. Because of some issues with the refreshing of this listview control, I had to create my own messagebox. It's just a form that displays some text ( it also happens to look nicer than MsgBox; in my opinion, anyways ). It's been working great for months, until recently.

My problem is that on my main form's load event, I run this check, which returns an error within a try/catch block. I then call my custom messagebox with a message. It in turns calls it's ShowDialog() function.

In any other situation ( after the main form has been loaded ), I have no problems. The messagebox goes on the screen and behaves appropriately ( ie: waits for my input and acts as a modal dialog ( stops execution of my main form's thread ) ). However, on this onload event, my messagebox comes up and goes away almost immediately afterwards.

I've traced it all the way to the showdialog() call. For no explicable reason, it appears to skip right over this call, without me doing anything on the form.

Here's what the inner trace looks like ( when I put a breakpoint on the onclosing event for this messagebox form ):

CODE:

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Javascript - Calling "window.open" From Within An Updatepanel?

Nov 23, 2011

I need to open a popup window from a LinkButton which is inside a GridView within an Update panel

I call this code in grid view's RowCommand

Dim script As String = "window.open('PopupPage.aspx, 'CommentsView', 'top=150,left=100,menubar=no,width=780,height=400,toolbar=no,resizable=no,scrollbars=yes');"
ScriptManager.RegisterClientScriptBlock(Me.Page, Me.GetType, Guid.NewGuid().ToString(), script, True)

But it does not open the popup window nor it gives an error, How can I fix this?

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Asp.net - Update Parent UpdatePanel From Child UpdatePanel - Conditionally

Aug 17, 2010

I am trying to trying to setup an updatepanel to update every X seconds, the problem is I don't want the control to actually refresh unless there is new data. So I currently have a child updatepanel in a parent UpdatePanel, the child updatepanel gets refreshed by a timer. But I can't seem to find a way to trigger the parent panel to update. Again, only when certain conditions(data changed) are met.

Sample Code:

<asp:Timer ID="Timer1" OnTick="Timer1_Tick" runat="server" Interval="10000"></asp:Timer>
<asp:updatepanel id="upParent" runat="server" UpdateMode="Conditional">

[Code].....

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Use OnKeyPress Event With No Script When Textbox Is Inside AJAX UpdatePanel?

Mar 30, 2011

I have a asp:textbox inside an AJAX updatepanel. My goal is to be able to update other controls, such as a asp:listbox that is inside the same updatepanel, while I type in the asp:textbox. I can easily do this using javascript. However, I am under a restriction, that is, I cannot use javascript.

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Javascript - Register A Client-side Event Listener On A Server-side Event?

Dec 28, 2011

Ultimately, what I want to accomplish is an AJAX-based messaging system. I already have a database table for messages, and an ASPX to add new messages (and declare old messages no longer relevant).

The current messaging system simply polls the server every 15 seconds, and re-pulls the current message set.

What I am looking to do is: On $(document).ready(), register an ajax callback function that listens for a server-side event (e.g., MessagesUpdated) On table insert/update, fire MessagesUpdated server-side.

This way, whenever the table is updated (or new records added), any clients listening know that new data is available and can re-poll the server then.

Ideally, I'd also like to make the new data available as an event argument (to minimize re-polling the db).

I can find references to something like this in other languages, but I cannot find any actual code examples to get me started.

Assuming this is possible to do via .Net, can anyone help get me started on this?

I'm using the 2.0 Framework. Also while I added a VB.Net tag, I can read C# reasonably well, so please feel free to post in either language.

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Hide The Form Onload?

Mar 8, 2011

i want my form hide whenever its running. I'm doing autoback up.

me.visible = false

is not working.

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Window Keeps Minimizing Onload

May 10, 2012

I have a windows application created using 2005. One of the screens keeps minimizing each time it's loading and I don't know why. when I look at the properties for the form, the window state is set to normal.

I did have the below line of code being used when the user clicked a button on this form because i wanted to minimize the form at that time; however, I've sinced remmed it out because of what's happening now.

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Asp.net - Trigger A Javascript Click Event?

Jan 27, 2010

I have a set of accordian divs (powered by the prototype library) in an asp.net page. I would like to save the state of the accordian, so when a postback event occurs, the same div is open rather than reloading the page entirely and opening the default div.

My plan was to set a page control value with the ID of the open div using the div's toggler click event function, and then fire a click event after postback calling that same div (using the value of the control holding the div ID) as the target. I'm not sure how to fire a javascript click event from vb.net however, and this sure seems like a lame workaround.

1) can you tell me how to fire a javascript click event from the vb.net codebehind page

-or-

2) is there a more elgant way to do this?

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Calling A Javascript In The Onclick Event In ASP.NET?

May 8, 2009

I am calling a javascript in the onclick event in ASP.NET sourcecode, as follows:

onclick='open popuplistitems("ct100$contentplaceholder..........")

how to do the same in vb.net ?

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How To Use A Javascript Onclick Event Using Code

Oct 7, 2009

I am building a program with the Webbrowser control that goes onto a website, on the website i have a div with a javascript onclick event that I want to 'activate' or be clicked. The when the div is clicked( the class of the div makes the div seem like a picture) a form above the div is submitted. I want to do this with VB code but the problem is thata) im not very experienced in VBb)the div only contains the following code

<div class="class1" onclick="javascript:document.getElementById(form2).submit();"></div>

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Javascript - OnClick/OnClientClick Event With Asp.Net?

Nov 22, 2011

I am a little confused to use this script and how it actually works?Here is my script:

<script type="text/javascript">
$(document).ready(function () {
$('#<%=TextBox1.ClientID%>').change(function () {
$('#various3').attr('href', $(this).val());
});

[Code]...

Now if I click the button it should open the iframe and display the message which I am able to do.Now the problem is how do I call the button1_Click event which is in the codebehind at the same time. I have used OnClick and OnClientClick event as shown below but it's not working and I'm not getting any errors.

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Javascript - UI Confirmation Not Firing The Event?

Feb 13, 2011

I am using jQuery confirmation box within my listView and the confirmation box displayed with the user clicks delete. The problem that I am faced with, is that when the user clicks OK it, the lvAlbums_ItemDeleting event is not fired.

Below is the .aspx code:

<link href="jQuery/jquery-ui.css" rel="stylesheet" type="text/css" />
<link href="jQuery/jquery-ui-1.7.2.custom.css" rel="stylesheet" type="text/css" />
<script src="https://www.google.com/jsapi?key=" type="text/javascript"></script>

[Code].....

I have spent days looking at different jQuery confirmation box examples but this is the best I can do. Ideally I would want to be use [URL] within gridviews, dataViews and ListViews but can't find examples which exactly provide steps to follow.

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Setting Focus To Form Onload?

Sep 18, 2009

i designed a form in which some records are loading in a datagrid. Here i want to focus the form at form loading. here when i run the pgm it focusing on the grid only. how can i do this?

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Add An Onclick Event To The OK Button Of The Javascript Confirm Box?

Jan 18, 2012

I am working with a .Net 1.1 web application. There is a Save button that, when clicked, will pop up the Javascript confirm box. Once the user clicks OK a long running process is kicked off. We would like to show a busy indicator when the user clicks the OK button of the confirm dialog.

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Asp.net - Prevent Firing The Code-behind Event From JavaScript?

Jul 22, 2011

I would like this ASP button control to stop calling its event handler when the JavaScript client method IsCorrectPrice() returns false.

<asp:Button ID="btnsubmit" runat="server"
Text="Submit" OnClientClick="javascript:IsCorrectPrice()"/>
btnsubmit_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Handles btnsubmit.Click

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Get A Javascript Call To Asynchronously Trigger An ASP.NET Event?

Feb 22, 2012

I have a flash video player embedded in a page which has javascript calls for it's controls, specifically calling playStarted() when the play button is pressed. I want to capture this event asynchronously to record when people are actually playing the video versus visiting the page, but I'm not really sure how to do this.

I was thinking the "hack" of a way would be to create a javascript function called playStarted() that would post the video ID to a separate ASP.NET page that would then record it to SQL (where I store my data on page visits and where I want to store my data on video plays.)

But ideally there is a better way to do this where I can register the javascript to the script manager so it can trigger a public sub asynchronously when it's called

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Pass A Javascript Variable To OnMouseOver Event?

Sep 12, 2011

How can i use a js variable in mouseOver event?Here is my code:

<script type="text/javascript">
window.String1 = <%=GetLocalResourceStringEscaped("String1")%>;
window.String2 = <%=GetLocalResourceStringEscaped("String2")%>;

[code].....

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Register (programmatically Use) A Mouse Over Event In C# Without Using Javascript

Jan 24, 2011

i know how to make a mouse over event using html code and javascript but i am interested in knowing if there is a way of making the mouse over event using c# and/or vb.net. i tried using the attribute.add for label, but doesnot work

[Code]...

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Asp.net - Call A LoginStatus.LoggingOut Event Handler From Javascript?

Jul 22, 2011

I have some javascript that should log a user out after a certain period of inactive time.I have an event handler in the code behind that handles the normal LoggingOut event of the LoginStatus object, but I can't figure out how to call it from my javascript.

I know you can use __doPostBack to call an event handler that handles the Click event of a link or button, but it doesn't seem to work for my LoginStatus object - I'm thinking it might be because it has no Click event (here's the doc) - it's not really a normal link/button.

The only other way I can think of to handle this is to create an actual logout button/link, write another event handler that does the same thing as my LoginStatus event handler, and call this new one using __doPostBack.Is there any way I can call the LoggingOut event handler from my javascript?

The page:

// html
<asp:LoginStatus ID="loginstatus" runat="server" />
...
// js

[code]....

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Javascript - How To Show Msgbox On Button Click Event

Jan 28, 2011

how to show msgbox on button click event if i have some disabled checkboxes and user forgot to check checkboxes. i m using asp.net Usercontrols How to show alert msgbox if user doesn't select atleast minimun 1 checkbox from asp.net checkboxes. if i have disabled some checkboxes on page load event then after user forgot to check checkboxes and click on button then still msgbox will popup "you haven't select checkboxes". to show msg box on button click event if i have disabled checkboxes and if user haven't select any of the checkbox [Code]

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Asp.net - Add A Javascript Validation To Each Dropdown Control In A Grid In RowDatabound Event

Nov 8, 2011

I am using a template field in a GridView. The template field is a dropdown list that is generated dynamically in the RowDataBound event.

How can I add a Javascript validation to each of those dropdown lists when they're created?

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Asp.net - Calling A Vb Linkbutton's (within A User Control) Click Event From Javascript

Apr 13, 2009

how can i call a VB function - deleteevent() in usercontrol.ascx.vb from a javascript function in clickhandler(e) in usercontrol.ascx. The call should cause a postback because i need the usercontrol to display the changes. i am currently trying to do it by using a linkbutton with style display:none, and calling its click event from the javascript function. But i dunno how to call the click event.

[Code]...

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Asp.net - Javascript And Html - Insert Text Box At Button.click Event

Apr 26, 2012

I have to insert text box at button.click event. for this I've been using this code implement it, in ASPX.VB file. below code refecting attached screen shot, which displaying the textbox beside to the delete button. Issue: Example: If we insert any simple text box in ASPX page, then we can take that textbox id and we can play with that in aspx.vb file . in the same way I would like to play with the below code by having the textbox Id. How? How I need to take this text boxId(id = ""txtExperimentalStressdays"") and save the user entered data into database.

[Code]...

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JavaScript - How To Check All CheckBoxes On Single Button Click Event

Apr 3, 2011

How to check all asp.net checkboxes on single asp.net button click event. If I have 45 checkboxes inside panel1 I want on button click event all the checkboxes will be checked and on another button click event all checkboxes will be unchecked... How to do it using jquery, javascript or vb.net ?

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Javascript - Calling A Server Side Function In The Java Script Of On Click Event Of A Div ASP.NET?

Apr 11, 2012

I have web page with four grid views. Each grid is hidden under a div tag. Whenever user clicks on div the data grid corresponding to the div is shown. I have binded data to the grid views at the page load only, since the data size is huge I cannot load the data binding at the page as the time taking to page load is huge. I was thinking a way that grid view gets data loaded only when user clicks on the corresponding div tag

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