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  • Places to start for system programmer transitioning to web programming

    - by Sean Ochoa
    So here's where I'm coming from: My background is in C#, C++, VB Script, php, javascript, PowerShell, T-SQL, and VB 6. I have some experience with python, and a brief introduction to Ruby On Rails. At work, we're transitioning to a web based UI in the next year or so, but in asp.net & SilverLight. I would like to, if possible, learn more open source web technologies on the side. And, hopefully, in a year and a half or so, I would like to transition to a more open source web technology position. I found that I do really like python, but I'm open to pretty much anything. And yes, I do know Linux (ubuntu and gentoo), as well. And, here's my question: What technologies, frameworks, IDEs, or systems should I be highly proficient in to become a prime candidate for a position doing web application development using non-Microsoft technologies?

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  • PHP is not called properly in IE using set interval function in Javascript

    - by Hemant
    Hi all, I am trying to show the message updated in DB using the following code var showtime = setInterval('redirect()',5000); ////Redirecting to DB Status ///// function redirect() { xmlhttp = GetXmlHttpObject(); if (xmlhttp==null) { alert ("Browser does not support HTTP Request"); return; } var url="isResultexist.php" xmlhttp.onreadystatechange=stateChanged; xmlhttp.open("GET",url,true); xmlhttp.send(null); } I am collecting the response from PHP here and using it to update the Messages on UI Problem here is it works fine 1st time when it called after 5sec but there after return the Same result even DB is updated, This works fine with Mozilla and google chrome browser regards hemant

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  • How do I pass a reference type to Control.Invoke / display a form centered on the main form

    - by Rubio
    I'm on a thread other than the UI thread and need to display a modal form that's centered on the application's main form. What I usually do is use the width and height of the main form and the modal form to calculate the location, then use the PointToScreen method of the main form to get the location of the modal form. Since I'm on another thread I need to use Control.Invoke to call this method. I just can't figure out how to pass a parameter of type Point to Control.Invoke (params object[]). Value types and String works fine. Or, if someone can find a better way to display a form centered on the main form regardless of thread, that would be great. MessageBox seems to be able to do this (although not modally).

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  • Persisting a collection backed by viewstate in a CompositeControl

    - by tomfanning
    Maybe it's been a long day but I'm having trouble persisting a collection backed by the ASP.NET ViewState in a CompositeControl. Here's a simplified version: public class MyControl : CompositeControl { public Collection<MyObject> MyObjectCollection { get { return (Collection<MyObject>)ViewState["coll"] == null ? new Collection<MyObject>() : (Collection<MyObject>)ViewState["coll"]; } set { ViewState["coll"] = value; } } } public partial class TestPage : System.Web.UI.Page { protected void btn_Click(object sender, EventArgs e) { myControl1.MyObjectCollection.Add(new MyObject()); } } When the button is clicked, the event hander btn_Click executes fine, but the setter for MyObjectCollection never gets called, hence the new MyObject() never gets persisted. I think I'm just having a blonde moment. Anyone fancy helping out?

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  • TestCase scripting framework

    - by Mikey
    Hey guys, For our webapp testing environment we're currently using watin with a bunch of unit tests, and we're looking to move to selenium and use more frameworks. We're currently looking at Selenium2 + Gallio + Xunit.net, However one of the things we're really looking to get around is compiled testcases. Ideally we want testcases that can be edited in VS with intellisense, but don't require re-compilling the assembly every single time we make a small change, Are there any frameworks likely to help with this issue? Are there any nice UI tools to help manage massive ammount of testcases? Ideally we want the testcase writing process to be simple so that more testers can aid in writing them. cheers

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  • Is it possible to dynamically add webcontrols via jQuery???

    - by Chris Conway
    Currently I have a webform that has a series of links. What I'd like to be able to do is add a webcontrol's content when one of the links is clicked. Is this kind of thing even possible? If not, what's the best strategy for loading a set of controls (one textbox and one dropdown with values from one link, two textboxes and a checkbox from another link, etc.). I'd need to be able get the values of each of these controls on postback. Ideally, I'd like to be able to add that new content to an acordian control, most likely the jQuery UI acordian. So each clickable link would add new content to an acordian control. What's everybody's thoughts on this?

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  • Is it possible to change where things are in Chrome's Developer Tools Script panel?

    - by T.J. Crowder
    When debugging browser-based apps using Google Chrome's Developer Tools, is there a way to change the locations of the various panes? Specifically in the Scripts panel (though I suppose it's a general question). E.g., the Watch Expressions, the Call Stack, the code pane, etc.? The defaults are okay (console at bottom, code pane upper left, a column of Watch Expressions, Call Stack, Scope Vars, etc. in the upper right), but I'd rather swap things around a bit if it's possible. There doesn't seem to be anything to grab (other than for sizing) and I haven't found a way in my searching so far, but there are (still) some things about Chrome's options that aren't ... well-advertised in the UI, shall we say :-), especially around developer tools.

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  • MPMediaickerController memory leak

    - by Joe
    This is code from Apple's Addmusic example. MPMediaPickerController *picker = [[MPMediaPickerController alloc] initWithMediaTypes: MPMediaTypeMusic]; picker.delegate = self; picker.allowsPickingMultipleItems = YES; picker.prompt = NSLocalizedString (@"Add songs to play", "Prompt in media item picker"); // The media item picker uses the default UI style, so it needs a default-style // status bar to match it visually [[UIApplication sharedApplication] setStatusBarStyle: UIStatusBarStyleDefault animated: YES]; [self presentModalViewController: picker animated: YES]; [picker release]; I'm using this code in my app and the Leaks instrument highlights a leak on the line: [self presentModalViewController: picker animated: YES]; I think that this is because this line retains a reference to picker which cannot be subsequently released. Is there any way around this?

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  • jQuery - events won't fire for dynamically created tab elements..

    - by Amit
    Hi, I am using jQuery UI Tabs. <div id="tabs"> <ul id="tablist"> <li><a href="#fragment-1"><span>One</span></a></li> </ul> </div> I have a button that adds new tabs. I use the following code: var newTabId = $('#tabs').tabs('option', 'selected') + 1; $('#tabs').tabs("add",'someUrl.htm','New Tab',newTabId); (Tab will be added next to the currently selected tab) Now none of the newly added tabs fire any events such as a click or hover $('#tablist li').click(function(){ alert('test message'); }); But events fire properly for the tabs that were there in the initial source code. How to resolve?

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  • Refreshing a binding that uses a value converter

    - by Hadi Eskandari
    I have a WPF UI that is bound to an object. I'm using a ValueConverter to convert a property to a specific image by a business rule: public class ProposalStateImageConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { var proposal = value as Proposal; var basePath = "pack://application:,,,/ePub.Content;component/Images/General/Flag_{0}.png"; string imagePath; if(proposal.Invoice != null) { imagePath = string.Format(basePath, "Good"); } else { imagePath = string.Format(basePath, "Warning"); } var uri = new Uri(imagePath); var src = uri.GetImageSource(); //Extention method return src; } } It is working fine, but later, when the object's state changes, I want to refresh the image and make the value converter reevaluate. How is this possible?

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  • Integrating GWT, Spring and JPA (Eclipse-link) in Weblogic 10

    - by MVK
    Hi, My application architecture looks like this. GWT in the UI layer - Calls GWT RPC service (servlets) - Looksup Spring Beans - Calls the DAO layer which is implemented in JPA (EclipseLink). I have successfully tested the application with GWT rpc services directly calling the JPA layer. But I am having trouble integrating spring into the mix. (Primary usage of Spring is transaction management). I tried googling, but could not find any good article on the topic. (Most of the articles refers to using Spring MVC within GWT, which is not what I am looking for) Could you please point me to some article/tutorial? Thanks in advance! Manoj

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  • Array merging/manipulation with Velocity

    - by Razor
    Hello, I have an array set inside a velocity template that contains some paths. The idea is to put a few "default" .js/.css files that 90% of the pages will use in this array. However, the other pages will still have to be able to add/delete values from this array, in case there are no linked files at all, or I need to add some. Given this code: #set ( $head.scripts = [ "https://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js", "https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.0/jquery-ui.min.js" ] ) #foreach ($URI in $head.scripts) <script type="text/javascript" src="$URI"></script> #end is there any way to add/delete values from these defaults? I have seen this list tool, but it looks like it's not enough for what I need.

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  • Detect if touch device

    - by Kilnr
    Hello, I'm writing a MIDlet using the Kuix UI toolkit, and I want to make changes to the toolkit depending on whether the current device is a touch screen device. (These changes include making buttons bigger, for easier tapping.) Is there a way to detect whether the device has a touch screen using J2ME (MIDP 2)? [edit] as a (crappy) workaround I check for the screen height instead. A screen width a height of higher than 240 is likely a touch screen... Please let me know if there are any more effective ways.

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  • Not able to override CSS within IFrame

    - by Madhur Ahuja
    I am using disqus comments for my jekyll blog with some CSS styles overriden in my stylesheet and used to work perfectly. Recently, disqus has introduced a new UI for their comments system which has completely broken the font colors. Since my site has dark background, I am trying to apply styles based on new disqus HTML structure generated. However, it seems that none of my styles get applied. It seems that is because disqus is loaded within iframe. Any ideas how can I fix the font colors. Example of the post: http://www.madhur.co.in/blog/2012/03/27/codeplexmovegit.html UPDATE Based on this question How to apply CSS to iFrame? it seems that you cannot style a child IFrame cross domain. I am wondering how it used to work earlier. Disqus even has documentation on it http://docs.disqus.com/help/69/

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  • Auto-generate WebControls

    - by Adrian K
    I want to generate .net code from a template so that it more rapid, so lazy developers (and I mean that in the nicest possible way!) don't have to write them in the IDE, compile them, etc... I know I can roll my own tool which generates the code using reflection (by reading in some text file, etc), but I just wondered if there was an easier than starting from scratch since this is what ASP.NET basically does already; so is there anyway to leverage this? E.g. to quote Peter A. Bromberg: Even an ASPX page with no code on it gets turned into an instance of the System.Web.UI.Page class. The page is parsed by the ASP.NET engine when it is first requested, and then its JIT compiled version is cached in the Temporary ASP.NET Files folder as long as the application is running and the .aspx page hasn't been changed. Ideally I want to auto-generate WebControls, but examples of anything closely related will do. C# Examples preferred also, but anything considered :)

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  • compile cs files with mono?

    - by acidzombie24
    I am trying to compile my project with mono on linux. My cmd looks something like... gmcs Pages/UserProfile.cs Properties/AssemblyInfo.cs queues.cs watch_editor.cs Class1.cs -define:USE_SQLITE -r:System -r:System.Collections -r:System.Collections.Generic -r:System.Collections.ObjectModel -r:System.Collections.Specialized -r:System.Configuration but much long. and i get the output error CS0006: cannot find metadata file `System.Collections' error CS0006: cannot find metadata file `System.Collections.Generic' error CS0006: cannot find metadata file `System.Collections.ObjectModel' ... How do i solve this? I also tried it the other way around (below) and had the same error msg with .dll at the end of them gmcs -define:USE_SQLITE -r:System.dll -r:System.Collections.dll -r:System.Web.UI.WebControls CommentCenter.cs cookies.cs db.cs Default.aspx.cs

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  • Unhandled exceptions in BackgroundWorker

    - by edg
    My WinForms app uses a number of BackgroundWorker objects to retrieve information from a database. I'm using BackgroundWorker because it allows the UI to remain unblocked during long-running database queries and it simplifies the threading model for me. I'm getting occasional DatabaseExceptions in some of these background threads, and I have witnessed at least one of these exceptions in a worker thread while debugging. I'm fairly confident these exceptions are timeouts which I suppose its reasonable to expect from time to time. My question is about what happens when an unhandled exception occurs in one of these background worker threads. I don't think I can catch an exception in another thread, but can I expect my WorkerCompleted method to be executed? Is there any property or method of the BackgroundWorker I can interrogate for exceptions?

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  • How to add/remove rows using SlickGrid

    - by lkahtz
    How to write such functions and bind them to two buttons like "add row" and "remove row": The now working example code only support adding new row by editing on the blank bottom line. <!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <title>SlickGrid example 3: Editing</title> <link rel="stylesheet" href="../slick.grid.css" type="text/css"/> <link rel="stylesheet" href="../css/smoothness/jquery-ui-1.8.16.custom.css" type="text/css"/> <link rel="stylesheet" href="examples.css" type="text/css"/> <style> .cell-title { font-weight: bold; } .cell-effort-driven { text-align: center; } </style> </head> <body> <div style="position:relative"> <div style="width:600px;"> <div id="myGrid" style="width:100%;height:500px;"></div> </div> <div class="options-panel"> <h2>Demonstrates:</h2> <ul> <li>adding basic keyboard navigation and editing</li> <li>custom editors and validators</li> <li>auto-edit settings</li> </ul> <h2>Options:</h2> <button onclick="grid.setOptions({autoEdit:true})">Auto-edit ON</button> &nbsp; <button onclick="grid.setOptions({autoEdit:false})">Auto-edit OFF</button> </div> </div> <script src="../lib/firebugx.js"></script> <script src="../lib/jquery-1.7.min.js"></script> <script src="../lib/jquery-ui-1.8.16.custom.min.js"></script> <script src="../lib/jquery.event.drag-2.0.min.js"></script> <script src="../slick.core.js"></script> <script src="../plugins/slick.cellrangedecorator.js"></script> <script src="../plugins/slick.cellrangeselector.js"></script> <script src="../plugins/slick.cellselectionmodel.js"></script> <script src="../slick.formatters.js"></script> <script src="../slick.editors.js"></script> <script src="../slick.grid.js"></script> <script> function requiredFieldValidator(value) { if (value == null || value == undefined || !value.length) { return {valid: false, msg: "This is a required field"}; } else { return {valid: true, msg: null}; } } var grid; var data = []; var columns = [ {id: "title", name: "Title", field: "title", width: 120, cssClass: "cell-title", editor: Slick.Editors.Text, validator: requiredFieldValidator}, {id: "desc", name: "Description", field: "description", width: 100, editor: Slick.Editors.LongText}, {id: "duration", name: "Duration", field: "duration", editor: Slick.Editors.Text}, {id: "%", name: "% Complete", field: "percentComplete", width: 80, resizable: false, formatter: Slick.Formatters.PercentCompleteBar, editor: Slick.Editors.PercentComplete}, {id: "start", name: "Start", field: "start", minWidth: 60, editor: Slick.Editors.Date}, {id: "finish", name: "Finish", field: "finish", minWidth: 60, editor: Slick.Editors.Date}, {id: "effort-driven", name: "Effort Driven", width: 80, minWidth: 20, maxWidth: 80, cssClass: "cell-effort-driven", field: "effortDriven", formatter: Slick.Formatters.Checkmark, editor: Slick.Editors.Checkbox} ]; var options = { editable: true, enableAddRow: true, enableCellNavigation: true, asyncEditorLoading: false, autoEdit: false }; $(function () { for (var i = 0; i < 500; i++) { var d = (data[i] = {}); d["title"] = "Task " + i; d["description"] = "This is a sample task description.\n It can be multiline"; d["duration"] = "5 days"; d["percentComplete"] = Math.round(Math.random() * 100); d["start"] = "01/01/2009"; d["finish"] = "01/05/2009"; d["effortDriven"] = (i % 5 == 0); } grid = new Slick.Grid("#myGrid", data, columns, options); grid.setSelectionModel(new Slick.CellSelectionModel()); grid.onAddNewRow.subscribe(function (e, args) { var item = args.item; grid.invalidateRow(data.length); data.push(item); grid.updateRowCount(); grid.render(); }); }) </script> </body> </html>

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  • How to change the layout of the CreateUserWizard control?

    - by Bazzz
    How to change just the layout (template) of the CreateUserWizard control programmatically? I would to define another layout (not using the horrid table) but continue to use all the event handling and the creation of the user of the CreateUserWizard control. Just for reference, the following code doesn't work, and produces an unexpected result not representing my Template at all. The "InstantiateIn" method of the ITemplate is not called. public partial class b : System.Web.UI.Page { protected void Page_Init(object sender, EventArgs e) { CreateUserWizard createUserWizard = new CreateUserWizard(); createUserWizard.CreateUserStep.ContentTemplate = new Template(); Panel1.Controls.Add(createUserWizard); } } public class Template : ITemplate { void ITemplate.InstantiateIn(Control container) { container.Controls.Add(new TextBox() { ID = "UserName" }); container.Controls.Add(new TextBox() { ID = "Password" }); container.Controls.Add(new TextBox() { ID = "ConfirmPassword" }); container.Controls.Add(new TextBox() { ID = "Email" }); container.Controls.Add(new PlaceHolder() { ID = "ErrorMessage" }); } } }

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  • TextBox.TextChanged & ICommandSource

    - by Brad Leach
    I am following the M-V-VM pattern for my WPF UI. I would like to hook up a command to the TextChanged event of a TextBox to a command that is in my ViewModel class. The only way I can conceive of completing this task is to inherit from the TextBox control, and implement ICommandSource. I can then instruct the command to be fired from the TextChanged event. This seems to be too much work for something which appears to be so simple. Is there an easier way (than subclassing the TextBox and implementing ICommandSource) to hook up the TextChanged event to my ViewModel class?

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  • Adobe After Effects Plugin With Cocoa (Overriding malloc)

    - by mustISignUp
    Messing about a bit, i have a working Adobe After Effects plugin with a bit of Obj-c / Cocoa in it (NSArray and custom objects - not ui stuff). The SDK guide states:- Always use After Effects memory allocation functions. In low-memory conditions (such as during RAM preview), it’s very important that plug-ins not compete with After Effects for OS memory, and deal gracefully with out-of-memory conditions. Failing to use our functions can cause lock-ups, crashes, and tech support calls. Don’t do that. If you’re wrapping existing C++ code, overloading new and delete to use our functions will save substantial reimplementation. On Windows, derive all classes from a common base class which implements new and delete. so my question.. is something compatible with the above statement possible in Obj-c?

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  • Help required in adding new methods, properties into existing classes dynamically

    - by Bepenfriends
    Hi All, I am not sure whether it is possible to achieve this kind of implementation in Dot Net. Below are the information Currently we are on an application which is done in COM+, ASP, XSL, XML technologies. It is a multi tier architecture application in which COM+ acts as the BAL. The execution steps for any CRUD operation will be defined using a seperate UI which uses XML to store the information. BAL reads the XML and understands the execution steps which are defined and executes corresponding methods in DLL. Much like EDM we have our custom model (using XML) which determines which property of object is searchable, retrievable etc. Based on this information BAL constructs queries and calls procedures to get the data. In the current application both BAL and DAL are heavily customizable without doing any code change. the results will be transmitted to presentation layer in XML format which constructs the UI based on the data recieved. Now I am creating a migration project which deals with employee information. It is also going to follow the N Tier architecture in which the presentation layer communicates with BAL which connects to DAL to return the Data. Here is the problem, In our existing version we are handling every information as XML in its native form (no converstion of object etc), but in the migration project, Team is really interested in utilizing the OOP model of development where every information which is sent from BAL need to be converted to objects of its respective types (example employeeCollection, Address Collection etc). If we have the static number of data returned from BAL we can have a class which contains those nodes as properties and we can access the same. But in our case the data returned from our BAL need to be customized. How can we handle the customization in presentation layer which is converting the result to an Object. Below is an example of the XML returned <employees> <employee> <firstName>Employee 1 First Name</firstName> <lastName>Employee 1 Last Name</lastName> <addresses> <address> <addressType>1</addressType> <StreetName>Street name1</StreetName> <RegionName>Region name</RegionName> <address> <address> <addressType>2</addressType> <StreetName>Street name2</StreetName> <RegionName>Region name</RegionName> <address> <address> <addressType>3</addressType> <StreetName>Street name3</StreetName> <RegionName>Region name</RegionName> <address> <addresses> </employee> <employee> <firstName>Employee 2 First Name</firstName> <lastName>Employee 2 Last Name</lastName> <addresses> <address> <addressType>1</addressType> <StreetName>Street name1</StreetName> <RegionName>Region name</RegionName> <address> <address> <addressType>2</addressType> <StreetName>Street name2</StreetName> <RegionName>Region name</RegionName> <address> <addresses> </employee> </employees> If these are the only columns then i can write a class which is like public class Address{ public int AddressType {get;set;}; public string StreetName {get;set;}; public string RegionName {get;set;}; } public class Employee{ public string FirstName {get; set;} public string LastName {get; set;} public string AddressCollection {get; set;} } public class EmployeeCollection : List<Employee>{ public bool Add (Employee Data){ .... } } public class AddressCollection : List<Address>{ public bool Add (Address Data){ .... } } This class will be provided to customers and consultants as DLLs. We will not provide the source code for the same. Now when the consultants or customers does customization(example adding country to address and adding passport information object with employee object) they must be able to access those properties in these classes, but without source code they will not be able to do those modifications.which makes the application useless. Is there is any way to acomplish this in DotNet. I thought of using Anonymous classes but, the problem with Anonymous classes are we can not have methods in it. I am not sure how can i fit the collection objects (which will be inturn an anonymous class) Not sure about datagrid / user control binding etc. I also thought of using CODEDom to create classes runtime but not sure about the meory, performance issues. also the classes must be created only once and must use the same till there is another change. Kindly help me out in this problem. Any kind of help meterial/ cryptic code/ links will be helpful.

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  • how to detect grid view empty cell

    - by nCdy
    how to detect grid view empty cell ? I need it for highlighting. So I made a css .RedColored { background: FF0000; } and trying to appear it to empty GV cells this way : protected virtual GridView1_RowDataBound (_sender : object, e : System.Web.UI.WebControls.GridViewRowEventArgs) : void { e.Row.Cells[0].CssClass = "wide"; foreach(i : int in [0..e.Row.Cells.Count-1]) { when(e.Row.Cells[i].Text==null) { e.Row.Cells[i].CssClass="RedColored"; } } } but my it doesn't appears to empty cells , even I've tried Text=="" , Cell[i]==null, Cell[i].ToString()=="" and nothing helped.

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  • Is ASP.Net Server Control, Postback Architecture failed in current Web 2.0 World.

    - by Lalit
    What i am looking around me is the drastically change in ASP.Net Architecture. More and more company are following the approach of JSON based wcf service in middle tier. Plain HTML based UI tier with JQuery/Ajax. No Postback at all, This contradicts the Default behaviour of Asp.Net Server Control/Code Behind Event handler/Postback. I am a Asp.Net Web Developer for around 4 years, and concerned about the future of ASP.Net. Is the Default Architecture of ASP.Net is Outdated at all? Does MVC or ASP.Net 4.0 Tries to solve the Issue?

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  • multiple occurences of HandleCreated for a single control

    - by Asher
    I’m using control that needs to be register to asynchronous events. The events will be raised in the UI thread using the ISynchronizeInvoke interface implemented by WinForms controls I can’t register to the event at the constructor because it will allow calling the event handler before the control is fully created. during which calls to ISynchronizeInvoke are not allowed. Solution to that problem is to use the perform the asynchronous event registration from an event handler to the HandleCreated instead of registering from the constructor. however, this poses another issue, in some scenations the HandleCreated event is raised multiple times as result of change at the control state. For example, each changing of the “RightToLeft” property causes a WMCreate message that cause raising the “HandleCreated” event. How can I prevent the multiply times of event rising? Is there is another way to know when the control is created and display for the first time? I can keep a boolean flag in the HandleCreated, however it feels like a hack and I am wondering if there is a better way to handle this issue.

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