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• how to stop onChange in javascript

  - by shrimpy

  in one of my selection box, i have a onChange="..." specified... coz i want to change some other form value after any selection changes. however ... in the same page, some wired case i have to manually set the value.. so i have to use some javascript to set the value of the selection combox, but in this case, i don`t want that onChange event to be fired... how can i walk around it??? Forgot to mention that i am actually using dijit.form.comboBox. for normal HTML form comboBox, it won`t cause any issue. Only i use the dijit comboBox, and i try to set the value to some other value, dojo will trigger the onChange.

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• SharePoint: Unique column values

  - by Anoop

  I Want to have only unique values in a SharePoin List. To achieve this I can use 'ItemAdding' event handler as mentioned in the below link. http://weblogs.asp.net/vikram/archive/2008/12/24/sharepoint-using-event-handler-to-make-a-column-unique.aspx Now I have a Doubt: Suppose that two user tries to add list Item in the list with the same column value(which requires unique value) at the same Time. will ItemAdding event would be fired at the same time for both call? If so then there is a possibility that two items having same value in the column. Please confirm.

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• Complex Selectors with jQuery Delegate

  - by Keith Rousseau

  Is there a restriction on the complexity of selectors that can be used with delegate in jQuery 1.4.2? This works for me: $('.activeTabsList').delegate('.activeTabsListItem', 'click', function() { alert('here'); }); This does not work: $('.activeTabsList').delegate('.activeTabsListItem:not(.selected)', 'click', function() { alert('here'); }); As you can probably assume, there is only 1 item at a time that has the selected class. When I click the other tabs, my delegate handler is still not fired.

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• WPF - databinding ObservableCollection CollectionChanged event?

  - by e0eight

  Hi, I have an observable collection implemented in my user control which indicates states of a device. Based on the collection change, the user control is to trigger animations(subscribe to collectionchanged event). The observable collection is implemented as a dependency property. In the application, I data bind the device states to the user control observableCollection using one-way databinding. When a new state is added in the application, I can see the ObservableCollection in the user control is updated. However, the CollectionChanged event never got fired, so no animations. Does anyone has an idea why this is so? Thank you in advance.

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• Update image in ASP.NET page from memory without refreshing the page.

  - by ZeeMan

  I have a command line C# server and an ASP.NET client, they both communicate via .NET Remoting. The server is sending the client still images grabbed from a webcam at say 2 frames a second. I can pass the images down to the client via a remote method call and the image ends up in this client method: public void Update(System.Drawing.Image currentFrame) { // I need to display the currentFrame on my page. } How do i display the image on the a page without saving the image to the hard disc? If it was a winForms app i could pass currentFrame to a picturebox ie. picturebox.Image = currentFrame. The above Update method gets fired at least 2 times a second. If the client was a winForms app i could simply put picturebox.Image = currentFrame and the current frame on the screen would automatically get updated. How do i achieve the same effect with ASP.NET? Will the whole page need to be reloaded etc?

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• Adding controls dynamically at design time vb.net

  - by chris

  I have been developing some custom smart tags. I am using a DesignerActionMethodItem which gets me to a fired method in code. When I try to hit the controls.Add the control is added but it seems the designer is unaware of it. It is never serialized and it goes away when the form is refreshed in the designer. Any help would be greatly appreciated. I am sort of stuck and google hasn't helped me. Please don't send me anything about smart tags that has nothing to do with adding controls dynamically at design time, I have already read so many looking for this.

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• Jquery live not working in IE

  - by Kaskade

  Hi, I have some code that works fine in FF but not in IE. I have read other posts saying that the Jquery live method does not support change events but I am using a click event. Here is my code, it is inside $(document).ready(function(): $("a").live("click", function(e) { alert("link clicked"); //do stuff }); If FF the alert is fired but not in IE. When I use $("a").click it works fine, the problem is that I need to the function to be applied to links that do not exist when the page is first loaded (they will be created via ajax calls at a later stage). Do I have any options here. We are using jquery-1.4.1.min.js. Thanks in advance

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• How to fire an event in the code behind when a div's visibility changed?

  - by Vibin Jith

  As part of my web project ,I have designed a div tag like a window form as Shown in the figure.I just want to fill details in the textbox when the user clicks the edit label.The div is Invisible at first time. when the user clicks on edit label ,the form-div get fadein(visible). During this time an event should fired in the code behind. But I am not getting any events in the code behind like visisbility changed or some thing like that. Where can i get this event. Simply i want to display appropriate company name in the textbox in the div , when the user clicks the edit label in each row.

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• Should we use NsMutableArray in CGRectIntersect ?

  - by srikanth rongali

  To know whether two sprites cross each other or not, should we use NSMutableArray to store the sprites ? In my game one fixed sprite(player) is there. And the other is a bullet fired and if this sprite intersects player sprite, then enemy won. I have used NSMutable Array to store the bullet sprites. If I do not use NSMutableArray then even though the the bullet intersects player it is not recognizing the intersection ? I am using ( (CGRectIntersectsRect(bulletRect, playerRect)). Thank You.

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• internet explorer 7 iframe unloads when going back

  - by André

  Hi this is my first post here, so please be kind ;-) i'm implementing a browser history manager, just like rsh or yui browser history manager. The idea was not to constantly poll the url hash of a hidden iframe, but to capture the onscroll event of an iframe, when it scrolls to an anchor name on an urlhashchange. So on every click i add an new anchor to iframe and set the iframe's hash to the anchors name. When pressing the back or forward button the frame scrolls to the previous or next anchor and the onscroll event is fired. That works great on firefox 3.0+, IE6 and Opera but on IE7 when hiting the back button the frame unloads and loses all its anchors. If anyone has an idea why this is happening or even a fix for this "bug", please i'm slowly going insane over this. thanks in advance btw the onscroll idea comes from: http://www.zachleat.com/web/2008/08/21/onhashchange-without-setinterval/

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• ASP.net Text Box Enter button pressed hell

  - by Morgeh

  Basically I have an asp.net website with login and search pages. Currently, I have no idea why, when ever a user hits enter in either of the login text boxes (user name/password) or in the Seach text box, the website is redirected to the default page. I have no idea why this is happening, I've tried setting defaultButton on both the panel containing the search and the login panel but that doesnt seem to work. I've also tried catching the key press event with javascript which isnt working either. I have no idea what event is being fired and why, or why it seems to override everything I try to do. Anyone seen anything like this before?

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• Can I make DataGridView.EndEdit trigger the CellValidating event?

  - by Don Kirkby

  I'm using a DataGridView in my WinForms application. My main objective is to make the Enter key not move to the next row in the grid. I still want the enter key to validate and end edit mode. I found this FAQ entry and subclassed DataGridView to override ProcessDialogKey(). If the key pressed is Enter, I call EndEdit(), otherwise I call base.ProcessDialogKey(). It works great, except the CellValidating event isn't fired. Currently, I'm just manually calling my validation logic before I call EndEdit, but it seems like I'm missing something. I guess I could call OnCellValidating, but then I'd be worried I'm missing some other event. What I really want is some flavour of EndEdit() that behaves just like pressing enter on the last row of a grid with adding disabled.

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• Using ManualResetEvent to wait for multiple Image.ImageOpened events

  - by umlgorithm

  Dictionary<Image, ManualResetEvent> waitHandleMap = new Dictionary<Image, ManualResetEvent>(); List<Image> images = GetImagesWhichAreAlreadyInVisualTree(); foreach (var image in images) { image.Source = new BitmapImage(new Uri("some_valid_image_url")); waitHandleMap.Add(image, new ManualResetEvent(false)); image.ImageOpened += delegate { waitHandleMap[image].Set(); }; image.ImageFailed += delegate { waitHandleMap[image].Set(); }; } WaitHandle.WaitAll(waitHandleMap.Values.ToArray()); WaitHandle.WaitAll blocks the current UI thread, so ImageOpened/ImageFailed events would never get fired. Could you suggest me an easy workaround to wait for the multiple ui events?

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• Open facebox from c# codebehind

  - by diver-d

  Hi there, I am creating a basic contact us form that contains a few fields and a button. I am using the jquery facebox plugin which I want to open after the buttons click event is fired displaying a value from one of the textboxes within the div tag. e.g. <div id="info" style="display:none;"><h1>Thanks for your enquiry</h1><p>Thanks [NAMEFIELD],<br /> Someone will be in contact with you shortly.</p> Any tips would be great!

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• NotifyIcon behaviour on Windows 7 with MouseClick, MouseDoubleClick events

  - by binball

  I have strange behaviour with my app after run it on Windows 7. It's connected with NotifyIcon while app is minimized. What should happens: 1) Click once on icon with mouse left button then Balloon with some text should appears 2) Double click on icon will show again app window On Windows 7 MouseDoubleClick is also fired but window is not showing. I don't know why. The same code works good on Windows XP. private void notifyIcon_MouseClick(object sender, MouseEventArgs e) { if (e.Button == MouseButtons.Left) { this.NotifyIconShowBalloonWithData(); } } private void notifyIcon_MouseDoubleClick(object sender, MouseEventArgs e) { this.Show(); WindowState = FormWindowState.Normal; notifyIcon.Visible = false; } What did I wrong? :)

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• QT clicked signal dosnt work on QStandardItemModel with tree view

  - by user63898

  Hello i have this code in QT and all i want to to catch the clicked event when some one clicking in one of the treeview rows without success here is my code: (parant is the qMmainwindow) m_model = new QStandardItemModel(0, 5, parent); // then later in the code i have proxyModel = new QSortFilterProxyModel; proxyModel->setDynamicSortFilter(true); setSourceModel(createMailModel(parent)); ui.treeView->setModel(proxyModel); ui.treeView->setSortingEnabled(true); ui.treeView->sortByColumn(4, Qt::DescendingOrder); // and my signal/slot looks like this but its not working //and im not getting eny clicked event fired connect(ui.treeView,SIGNAL(Clicked(const QModelIndex& ) ), this,SLOT( treeViewSelectedRow(const QModelIndex& ) ) ); also how can i debug QT signal/slots so i can see some debug massages printing when something is wrong ?

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• Is there a way to catch a MOUSE_UP Event over a static textfield in Flash?

  - by Jovica Aleksic

  When the user presses the mouse, and releases it over a static textfield with selectable text, no MOUSE_UP event is fired - not on the stage and also nowhere else. I experienced this when using a scrollbar class on a movieclip with a nested static textfield. When the user drags the scroll handle and releases the mouse over the textfield, the dragging/scrolling is stuck. To test this, create a new AS3 fla file, place a static textfield somewhere, and put in some text. Make sure the selectable property is checked in the properties panel. Add this script to the timeline: import flash.events.* function down(event:Event):void { trace('down'); } function up(event:Event):void { trace('up'); } stage.addEventListener(MouseEvent.MOUSE_DOWN, down) stage.addEventListener(MouseEvent.MOUSE_UP, up) Now test the movie and click the mouse. You will notice that trace('up') will not occur when you release the mouse over the textfield.

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• addEventListener gone after appending innerHTML

  - by Vishal Shah

  Okay, so i have the following html added to a site using javascript/greasemonkey. (just sample) *a id='abc'*HEllo*/a* *a id='xyz'*Hello*/a* (excuse me, i've had to replace the '<' '' with * since hyperlinks for new users aren't allowed!) and i've also added a click event listener for the elements. All works fine up to this point, the click event gets fired when i click the element. But... i have another function in the script, which upon a certain condition, modifies that html, ie it appends it, so it looks like: *a id='abc'*HEllo*/a* *a id='xyz'*Hello*/a* *a id='123'*Hello*/a* but when this is done, it breaks the listeners i added for the first two elements... nothing happens when i click them. if i comment out the call to the function which does the appending, it all starts working again! help please...

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• Custom Java events with listeners vs. a JMS based implementation?

  - by Joe Dean

  My application requires events to be fired based on some specific activities that happen. I'm trying to determine if I should create my own event handling system using the Java EventObject with custom listeners similar to Java AWT Or should I use a JMS implementation? I was considering either apache's Qpid or ActiveMQ solution. I'm exploring these options at the moment and was wondering if anyone has experience with Qpid or ActiveMQ and can offer some advise (e.g., pros, cons to consider, etc) Also, if anyone has any suggestions for building a simple event handling system... if it's even worth while to consider this over a JMS based solution.

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• C# NotifyIcon behaviour on Windows 7 with MouseClick, MouseDoubleClick events

  - by binball

  Hi, I have strange behaviour with my app after run it on Windows 7. It's connected with NotifyIcon while app is minimized. What should happens: 1) Click once on icon with mouse left button then Balloon with some text should appears 2) Double click on icon will show again app window On Windows 7 MouseDoubleClick is also fired but window is not showing. I don't know why. The same code works good on Windows XP. private void notifyIcon_MouseClick(object sender, MouseEventArgs e) { if (e.Button == MouseButtons.Left) { this.NotifyIconShowBalloonWithData(); } } private void notifyIcon_MouseDoubleClick(object sender, MouseEventArgs e) { this.Show(); WindowState = FormWindowState.Normal; notifyIcon.Visible = false; } What did I wrong? :) Thanks in advance for your answer.

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• Events on controls in web server control

  - by MarkyMarc

  Hi All, I'm creating a web server control that has an image button on it. The html for the control is done in the RenderControls of the code, the control devrives from WebControl, IScriptControl, INamingContainer. The button is coded as follow in the RenderControls: System.Web.UI.WebControls.ImageButton img = new System.Web.UI.WebControls.ImageButton(); img.ImageUrl = "Url of the image"; img.Click += new ImageClickEventHandler(img_Click); img.ID = this.ClientID + "_img"; img.CausesValidation = false; imgLock.RenderControl(output); The button apreas in the browser but when i click on it, the page postsback but the event handler for the button doesn't get fired, from what i can figure out, since the control goes throught RenderControls eachtime the page is posted back, the button gets redrawn and the event handling disapears. This server control is in a master page. Anyone can help me on this? Thanks

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• wpf datagrid textbox + combobox

  - by Muhammad Adnan

  I have wpf datagrid with number of template columns. some of them have textbox in them in edit mode and some combobox. i need to give cut/copy/paste facility to user from main menu (ribbon) buttons of my application. when i select some text from textbox and press copy button from main menu. copy button becomes active control so i loose textbox as active control by which i could get selected text. (any solution for this) and second thing i wanted to ask... is there any event get fired when we select textbox's contents? or solution would be appreciated. Thanks in advance...

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• how can I override an anonymous javascript function attached to an eventlistener?

  - by Sid

  I found that a website does somewhat sneaky things. When you hover over a link, it shows you the real URL. WHen you click on it, it uses the click/mousedown event to rewrite the URL. I want to override that behaviour in firefox, So I fired up firebug to see what it does. On a mouse click, it executes a function called window.tgs. Easy, I thought. I can override this function. My first attempt was to do get the element via getELementsByTagName(), and then element.removeEventListener("click",window.tgs, false); To my surprise, this did nothing. I tried redefining window.tgs window.tgs = function() { return true; }; that did not do anything either. I am not a JS expert. Your insights appreciated thanks Sid

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• Opting out of `dragenter` and `dragover` events (html5)

  - by aaaidan

  I have a collection of draggable "content" elements, and a root-level "feedback" UI element which is displayed above them to provide feedback during drag and drop. The problem is, during the drag operation, hovering over the "feedback" element causes the dragenter and dragover events to be fired on that element, rather than the underlying content element. It effectively "blocks" the dragenter event from firing on the correct element. Is there a way for an element to cancel, or "opt out" of a dragenter/dragover event? I could display the feedback element underneath the content, but I'd rather not do that. jsFiddle: http://jsfiddle.net/jact8/1/ I'm using the HTML drag/drop api, not jQuery or anything like that.

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• .Net framework 1.1 web application on Safari

  - by Vijay

  We have an intranet web application developed using .NET framework 1.1 The application has few validators and fired from the server side (They are not client side validators). The web application runs perfectly fine on IE and Firefox (both on Mac and Windows). However on Safari(ver 4.0.3) browser running on Mac, the application intermittently fails to do post-back while submitting the page and just reloads the page. Is this issue something to do with .Net framework 1.1 or Safari browser? Is there any way to resolve this issue? Any pointers on this would be very helpful. Thanks!

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