event-handling

Syntax for adding an event handler in VB.NET

由 Deadly 提交于 2019-11-27 06:44:27
问题 I have following code i need to convert to VB.NET. Problem is every translation tool I found is converting the add handler part wrong. I don't seem to be able to do it by myself. FtpClient ftpClient = new FtpClient(); ftpClient.UploadProgressChanged += new EventHandler<UploadProgressChangedLibArgs>(ftpClient_UploadProgressChanged); ftpClient.UploadFileCompleted += new EventHandler<UploadFileCompletedEventLibArgs>(ftpClient_UploadFileCompleted); 回答1: There are two different ways to associate

Detect when a form has been closed c#

由 时光总嘲笑我的痴心妄想 提交于 2019-11-27 06:40:38
问题 I have a WinForm that I create that shows a prompt with a button. This is a custom WinForm view, as a message box dialog was not sufficient. I have a background worker started and running. I also want to exit the while( aBackgroundWorker.IsBusy ) loop if the button on myForm was clicked. //MyProgram.cs using(CustomForm myForm = new CustomForm()) { myForm.Show(theFormOwner); myForm.Refresh(); while(aBackgroundWorker.IsBusy) { Thread.Sleep(1); Application.DoEvents(); } } Right now, in the

UIElement.AddHandler() vs .Event += Definition

由 本小妞迷上赌 提交于 2019-11-27 05:56:40
问题 1.st part of the quesion: What is the difference between these 2 event registrations ? _popUp.AddHandler(PreviewMouseLeftButtonDownEvent, new MouseButtonEventHandler(PopUp_PreviewMouseLeftButtonDown)); _popUp.PreviewMouseLeftButtonDown += new MouseButtonEventHandler(_popUp_PreviewMouseLeftButtonDown); 2.nd part of the question: or eventually versus popUp.Opened += PopUp_Opened; 回答1: According to Redgate's Reflector, there is no difference. Both methods eventually call the internal method

Explain ExtJS 4 event handling

由 眉间皱痕 提交于 2019-11-27 05:45:17
I've recently started learning ExtJS, and have trouble understanding how to handle Events. I have no experience of any previous versions of ExtJS. From reading various manuals, guides and documentation pages, I've figured out how to use it, but I'm not clear on how it works. I've found several tutorials for older versions of ExtJS, but I'm not sure how applicable they are in ExtJS 4. I'm specifically looking on the "final word" on things like what arguments does an event handling function get passed? Is there a standard set of args that always get passed? how to define custom events for custom

Bind Multiple Keys to Keypress Event

由 不问归期 提交于 2019-11-27 05:42:03
问题 I am currently using this Javascript kepypress code to fire events upon keypress: $(document).keydown(function(e) { switch(e.keyCode) { case 39: e.preventDefault(); alert("Arrow Key"); break; case 37: e.preventDefault(); alert("Arrow Key"); } }); but what i am wondering is if i can instead of binding one key bind a combination of two keys. Could I possibly do something like: $(document).keydown(function(e) { switch(e.keyCode) { case 39 && 37: e.preventDefault(); alert("Arrow Key"); break; } }

Does jQuery preserve touch events properties?

由 我只是一个虾纸丫 提交于 2019-11-27 05:23:02
问题 While this code produces the expected behavior of "1" when touching the screen: document.getElementById('someNodeId').addEventListener('touchmove', touch, true); function touch(evt) { evt.preventDefault(); alert(evt.changedTouches.length); } the same code using a jQuery selector: $('#someNodeId').bind('touchmove', touch); produces the error: "TypeError: Result of expression 'evt.changedTouches'[undefined] is not an object". (Device = iPod Touch OS 3.1.3 (7E18); jQuery 1.4.2). How is this

submit event does not fire if submit initiated programatically

由 三世轮回 提交于 2019-11-27 05:17:41
I have a HTML form with button: <form action="/" method="post" id="MyForm"> <input type="hidden" name="Field1" value="Value1" /> <input type="hidden" name="Field2" value="Value2" /> <input type="submit" name="name" value="submit" /> </form> I have event handler for submit attached to Window: window.onsubmit = function() { alert("Submit happening!"); }; This event handler fires properly if I click "Submit" button. However events never works when submit is triggered programatically from javascript: $("#MyForm")[0].submit(); How to catch submit event handler when it was initiated by Javascript,

re-firing a click event on a link with jQuery

由 本秂侑毒 提交于 2019-11-27 04:51:50
问题 i've got a page (asp.net) where I trap the click event of a link. i then do some dirty checking and present a dialog to the user, $(function() { var clickedLink; $('.checkdirty').click(function(event) { if(isDirty == false){ return true; } clickedLink = $(this); $('#dirtysave-dialog').dialog('open'); return false; }); }); do you want to loose your changes Yes/No etc. $('#dirtysave-dialog').dialog({ bgiframe: true, autoOpen: false, height: 125, width: 425, modal: true, title: "You have unsaved

Handling Events for OLEObject CommandButtons created at Runtime

由 耗尽温柔 提交于 2019-11-27 04:51:00
问题 I have struggled with this problem for while now...I want to do something very simple. I want to create multiple commandbuttons at runtime, and then handle events for these commandbuttons with one procedure. So I have built a "withevents" class to handle the automation, but my code is not working. When I run Test(), the CommandButton is created, but when I click on it...there is no messagebox response...I cannot find the error..Please any help would be great!! Class cTest Public WithEvents

VBA Outlook event moving email

由 时光毁灭记忆、已成空白 提交于 2019-11-27 04:47:50
问题 I search a way to get the event of a moving item/email in outlook. Can we use an Inspector? Or maybe there's an event handler like itemsent or newmail? Thank you More Details : I have 4 or more mail boxes. Each has an number X of folders and subfolders (1 of them is a livelink box with millions of folders). Some are common box, and there are people who drag common mail. I want to catch every time a mail is moved on a folder in livelink box. 回答1: An event is fired when an item is added to a
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