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• Throwing an exception from a BackgroundWorker which calls an async. method (Webrequest)

  - by mrbamboo

  Hi, My main application creates a new BackgroundWorker X the DoWork event handler of X calls a method Y of my controller. This method creates the WebRequest (async.) instance and the callback using AsyncCallback. When the response arrives the callback method Z gets called and the content will be analyzed. It can happen that the response has an unwanted content. At that moment callback Z will throw an exception. I want to catch this exception in my main application. I tried it in DoWork and RunWorkerCompleted but nothing can be caught from there. Error in RunWorkerCompletedEventArgs is always null.

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• ext gwt textbox is empty?

  - by user153506

  i have a textbox received from designer.but i wrote action in GWT. the problem is textbox is empty but when textbox is filled by value by pressing button then alert box will be displayed informed that value has been changed. but not worked.help me. TextBox zip1 = null; function onModuleLoad() { zip1 = TextBox.wrap(DOM.getElementById("zip1")); zip1.addChangeHandler(zip1ChangeAction()); } private ChangeHandler zip1ChangeAction() { return new ChangeHandler() { public void onChange(ChangeEvent event) { Window.alert("change fired"); } }; }

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• WPF - Drag from withing DataTemplate

  - by Gustavo Cavalcanti

  I have a ListBox displaying employees with a DataTemplate - it looks very similar to this screenshot. I want to be able to click on the employee photo, drag it and drop it somewhere out of the ListBox. How can I do that? I am not sure how to capture the PreviewMouseLeftButtonDown event of the Image, since it's inside the DataTemplate. Edit: The DataTemplate lives in a separate assembly and the drag/drop logic needs to be in the Window that has the ListBox. Edit2: I am thinking that the right way of doing this is using commands, am I right? Thanks!

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• Disabling Submit Button in ASP.NET 3.5 Application with JavaScript breaks BlackBerry submission

  - by ahsteele

  The following code is being used to disable a Submit button once it has been clicked. This works great on desktop browsers and most BlackBerry mobile browsers. Submit.Attributes.Add("onclick", "javascript:this.disabled=true;" + ClientScript.GetPostBackEventReference(Submit, null)); Unfortunately, when using a BlackBerry Storm clicking the submit button causes the device to just reload the page. If I remove this code the Storm browser submits the page just fine. I need to disable the button when the browser is capable of doing so but do not want to affect browsers that are not JavaScript capable. I realize I could add the jQuery framework and only attach the event client side, but am trying to look for the simplest fix (read least intrusive) as this is a legacy application. Any suggestions?

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• Can a ScatterViewItem dynamically resize to fit its content?

  - by Brett

  We're hosting a control inside of a ScatterViewItem that dynamically changes its size at runtime as a result of having various sub-elements added, removed, and/or collapsed. We would like to have the hosting ScatterViewItem resize as well to properly fit its child controls, but we're having a hard time making this happen. We've tried a number of different things and the closest we've come is hooking into the child control's SizeChanged event and explicitly setting the ScatterViewItem's Width and Height, but this approach still has issues. When you define a ScatterViewItem and its content in XAML, the ScatterViewItem is sized appropriately. We would like to force the same behavior at runtime when its content changes size. Any help would be greatly appreciated. Thanks!

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• I'm a java developer struggling with jQuery

  - by Mustafa

  Guys i am very new to jQuery.I have started using the auto complete feature.What i want is while i click on an item provided by the auto complete the page should submit to another page.I am using : $().ready(function() { $("#name").autocomplete("contacts.jsp"); $("#name").result(function(event, data, formatted) { if (data) $(this).parent().next().find("input").val(data[1]); }); $("#name").setOptions({ mustMatch : false, max: 8, onClick:selectItem, autoFill: false }); }); And this gives me good data like :Aditi XaveirAsif Garhietc for 'A'Now what i want is on clicking Aditi Xaveir, the page should submit to AditiXaveir's profile page.How do i do that?

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• M a java developer struggling with jQuery :(

  - by Mustafa

  Guys i am very new to jQuery.I have started using the auto complete feature.What i want is while i click on an item provided by the auto complete the page should submit to another page.I am using : $().ready(function() { $("#name").autocomplete("contacts.jsp"); $("#name").result(function(event, data, formatted) { if (data) $(this).parent().next().find("input").val(data[1]); }); $("#name").setOptions({ mustMatch : false, max: 8, onClick:selectItem, autoFill: false }); }); And this gives me good data like :Aditi XaveirAsif Garhietc for 'A'Now what i want is on clicking Aditi Xaveir, the page should submit to AditiXaveir's profile page.How do i do that?

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• Java EE 6 - ordering Servlet Request Listeners

  - by Walter White

  Hi all, I finally updated to Java EE 6 (web profile) and would like to control the ordering of my servlet request listeners. I did that before through the XML ordering by listing the listeners in a particular order. Now, I have placed the @WebListener annotation on the classes which are listeners and am trying to figure out how to order the listeners such that they work properly. One must run before another one, otherwise, it won't have the information it needs and won't work. Also, it doesn't seem my listeners are actually being invoked even though they're marked with @WebListener. I am running embedded glassfish 3.0. Another question that is somewhat related - ServletRequestListeners in Java EE 6 by default are still synchronous meaning they're hit first, then servlet filters, right? ServletRequestListeners are not asynchronous where they merely get notified of an event without interrupting the execution? Walter

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• What is the pro and cons using javascript in our form ?

  - by justjoe

  I got this code in my submit form Then use some js functions in the head; function frmSubmitSameWindows() { form.target = ''; form.submit(); } function frmSubmitNewWindows() { form.target = '_blank'; form.submit(); } What is the pro and cons when we use javascript event function such as frmSubmitSameWin() and frmSubmitNewWin() in our form ? as far as i concern, this is the best solution when we need a way to submit things. Is there other preference ? the better way then the way i got now ?

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• Cannot connect QMainWindow and QDialog

  - by bartek

  Hi, I have a QMainWindow displaying a QDialog: CalibrationDialog d(this); d.exec(); My QMainWindow class has a signal: signals: void PenOn( QPoint p ); And QDialog has a slot: public slots: void on_PenON( QPoint p ); I tried connecting PenOn event to on_PenOn in two ways: After instantiating QDialog void MainWindow::on_actionC_triggered() { appState = CALIBR; CalibrationDialog d(this); connect( this, SIGNAL(PenOn(QPoint)), &d,SLOT(on_PenOn(QPoint)) ); d.exec(); } In QDialog constructor CalibrationDialog::CalibrationDialog(QWidget *parent) : QDialog(parent), ui(new Ui::CalibrationDialog) { ui-setupUi(this); [...] connect( parent, SIGNAL(PenOn(QPoint)), this,SLOT(on_PenOn(QPoint)) ); } None of this works :(. I'm emitting PenOn signal from MainWindow slot activated by another thread. What am I doing wrong?

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• Flex: vertical gap between list items not working

  - by pfunc

  I have a list item with buttons in it like so: <mx:List contentBackgroundAlpha="0" baseColor="0x333333" leading="10" id="weekButtonList" width="260" borderVisible="false" dataProvider="{_data.mappoints.week.@number}" itemClick="onWeekClick(event);" > <mx:itemRenderer > <mx:Component> <mx:Button buttonMode="true" width="260" height="50" label="Week {data}" /> </mx:Component> </mx:itemRenderer> </mx:List> No matter what I do, these buttons have a vertical gap inbetween them. I have tried everything from setting the "vertical-gap" property to negative and positive numbers as well as changing the padding-bottom and padding-top on them. I want the buttons to be right up against eachother vertically. I have also tried "button-height" and padding on the List component...still nothing. How do I control this?

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• Creating a Cross-Process EventWaitHandle

  - by Navaneeth

  I have two windows application, one is a windows service which create EventWaitHandle and wait for it. Second application is a windows gui which open it by calling EventWaitHandle.OpenExisting() and try to Set the event. But I am getting an exception in OpenExisting. The Exception is "Access to the path is denied". windows Service code EventWaitHandle wh = new EventWaitHandle(false, EventResetMode.AutoReset, "MyEventName"); wh.WaitOne(); Windows GUI code try { EventWaitHandle wh = EventWaitHandle.OpenExisting("MyEventName"); wh.Set(); } catch (Exception ex) { MessageBox.Show(ex.Message); } I tried the same code with two sample console application, it was working fine.

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• Modifying an old Windows program not to call exit after a keypress without source access

  - by rustyn2

  I have an older C++ Windows program that I've been asked to get run in a kiosk style environment for a student project. From the main menu, hitting ESC will exit the program, which is undesirable. In ye olden days I would have trapped the keyboard interrupt or whatever and dug around to NOOP whatever JMP or CALL was getting referenced in the case statement that likely decides all that, but on Windows everything goes through various registered event handlers, and I haven't done any windows internals work in about 10 years. Is there a good tool to breakpoint a program on certain WM_EVENT (WM_KEYDOWN being a prime target) messages or similar, so that I can narrow down where in the executable the check is made? I'm currently stepping back from various potential system calls made before the various thread cleanups and final exit calls but it seems like there has to be a better way to do this that I'm forgetting.

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• What is node.js?

  - by Jeffrey

  I don't fully get what node.js is all about. Maybe it's because I am mainly a web based business app developer. Can someone please explain what it is and the use of it? Thanks. My understanding so far is that: The programming model is event driven, especially the way it handles IO. It uses javascript and the parser is V8. It can be easily used to create concurrent server apps. Are my understandings correct? If yes, then what are the benefits of evented IO, is it just more for the concurrency stuffs? Also is the direction of node.js to become a framework like, javascript based (v8 based) programming model?

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• LinkButton + showmodaldialog not working

  - by CPM

  What would be the west way to open a window.showModalDialog on linkbutton when updating a form? I have a linkbutton on form that allows me to update the data, I want to be able to check if the data updatedin this case , parameter status of client is active I want to be able to open a window to fill some more information. Public Function OpenWindowRquest(ByVal URL As String) As String If accountMode = "1" Then Return "window.showModalDialog('" & Page.ResolveUrl(Server.UrlEncode(URL)) & "', window,'resizable:yes; scroll:on; status:yes; dialogWidth:750px; dialogHeight:350px; center:yes');" Else accountMode = "" Return "" End If On aspx side I have <asp:LinkButton id="UpdateButton" runat="server" commandName="Update" Text="Update" OnClientClick='<%# OpenWindowRequest("myurl.aspx") %>'></asp:LinkButton> I also tried to call the function OpenWindowRequest on FormUpdating event but it doesnt work, window is not opened.

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• Keep an object for the time the connection is running in ASP.NET

  - by vtortola

  Hi, I'm developing a web service with ASP.NET, is not an .asmx or WCF, it's a custom one, so I'm working with the Http classes (context, request, response, etc..). Session is disabled. I'm working with my own handler and module. I'd like to keep a object alive and accessible for the time the connection is alive. I mean, a request enters, I assign a DbCommand to it and that connection will use that command as long is doing things, when that connection is ended, the object should be disposed. I've thought, that I can add it to my IPrincipal implementation, then when the connection is authenticated in the module and the user retrieved, I can add that DbCommand to the IPrincipal, so I can retrieve it from wherever I want in the code, and after in the module EndRequest event, I can dispose it, but I don't know if there is a better approach to do this. What do you think? cheers

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• ASP.NET VB.NET GridView adding anchor tag to a cell

  - by user3036965

  I have an GridView control with some data in the first cell throughout the column. Ineed to make that cell data into a hyperlink (anchor tag) like the following. <a href=""myPage.aspx?r=" & strParam & """>" & strData & "</a>" Can anyone advise on the most effective way to do this? I am using a datatable and then assigning the datatable to the gridview. Any advice would be greatly appreciated. I need to use the Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs). So I could add a hyperlink whatabout getting the parameters into the RowDataBound event is where my skills are falling down. Thank you

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• MySQL Trigger creation

  - by Bruce Garlock

  I have an application where I need to INSERT an auto_increment value from a PK in another table. I know how to do this in PHP, but I need to have this done at the DB level, since I cannot change the program logic. I am new to triggers, so I'm sure this will be an easy answer for someone. Here is what I have so far: DELIMITER // CREATE TRIGGER new_project AFTER INSERT ON m_quality_header FOR EACH ROW BEGIN INSERT INTO m_quality_detail (d_matl_qa_ID) VALUES (NEW.h_matl_qa_ID); END// DELIMITER ; I just want the value of the auto_increment value from h_matl_qa_ID to be inserted as a new record into d_matl_qa_ID. The error I get is: "This version of MySQL doesn't yet support 'multiple triggers with the same action time and event for one table' But, I don't want to update the table that has the trigger, so why is my current code considered a 'multiple' trigger? This is on MySQL 5.0.45-7.el5 running on a CentOS 5 server (64-bit Intel) If I have to, I can modify the PHP code, but that needs to be the last resort.

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• Wire the homepage so that it fires off a Push notification message to my iPhone every time someone l

  - by fwd4

  I looking for a simple way to wire the homepage of my website so that it fires off a Push notification message to my iPhone every time someone lands on the page (just visiting in their browser). I'm aware this could become annoying! I currently send regular notifications to my iPhone using cron and curl to check sites / RSS feeds for change and then fire to to the Prowl API who in turn send it to my iPhone - like so: curl https://prowl.weks.net/publicapi/add -F apikey=$apikey -F priority=$priority -F application="$app" -F event="$eventname" -F description="$description" Could I do something similar from with the HTML of the homepage - call a script on my server which in turn fires a similar curl request above? Maybe with Javascript or PHP? Ideally I'd like the loading and rendering of me webpage to be uninterrupted by the call. Hat tip to Prowl - http://prowl.weks.net/api.php and to flx.me Both of which I use to make what I have already working.

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• MouseLeftButtonUpEvent & Bubbling in Canvas

  - by Maxim

  Hi guys, I think I'm going crazy... I have Canvas with event handlers for MouseMove & MouseLeftButtonUp. However MouseLeftButtonUp is not being fired when it happens with cursor over TextBlock that is inside canvas. (it fires just fine when I release mouse button in empty space of the canvas) I tried attaching handler via AddHandler and using regular += syntax, nothing seems to work. I tried using Canvas.CaptureMouse() but it doesnt seem to work either (CaptureMouse returns true btw). MouseLeftButtonUp just doesnt want to propagate to it's parent when it happens over TextBlock (or any other element with IsHitTestVisible = true) inside Canvas. Please help.

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• Google Charts POLY problem with VS 2010 image map

  - by Davy

  Hi I am using http://code.google.com/apis/chart/docs/gallery/googleometer_chart.html I have: <img src="http://chart.apis.google.com/chart?cht=bvg&chs=250x150&chd=s:egbdf&chxt=x,y&chxs=0,ff0000,12,0,lt|1,0000ff,10,1,lt&chm=o,000000,0,-1,10|V,000000,0,-1,1:15,,:4:10|H,000000,0,-1,3:9,,:8:17&chxl=0:|E|G|B|D|F" usemap ="#chart" /> <map name='chart'> <area name='bar0_0' shape='POLY' coords= '124,440,124,499,143,440,143,498' href='#'> <area name='bar0_1' shape='RECT' coords='55,129,78,63' href='#'> </map> When I use 'rect' for shape I can attach a click event etc but when I use 'poly' It doesn't work. I've use a jQuery mouse position plug in to check the coords and they seem ok. Can anyone help please? Thanks

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• A very weird problem with texbox control in C# .net

  - by Kazoom

  Well i know textbox is a very simple user control, perhaps the first input control ever made. I have been facing a very frustrating problem with this simple control. I programatically add a textbox in my user control. From ui i am able to edit it like a normal textbox. however, i am not able to read the user inputed value in the program. my program all the time sees the old value with which my text box was initialized. i textchange event getting triggered but the value never gets updated. This seemingly looks to be some innocuous bug in the code, but the program is very simple and it does not seem to be having any bug. Any guidelines on this issue?

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• Can I refresh a Yii CGridView from js?

  - by Brian Dunn

  When a "Create" modal dialog is submitted via XHR Then the rows in a Yii CGridView should be refreshed. I've tried to achieve this by rendering the new gridview in the XHR "create" action and then inserting it into the page via $("#list").html(response), but rendering a CGridView causes jQuery <script> include tags to be registered for inclusion, and so when I introduce those tags into the page they reload jQuery, which wipes out my live event handlers, so a bunch of stuff breaks. Which has me thinking, "the GridView knows how to refresh itself. heck, it does all the time on sort or page." So I can click a sort button in the GridView from js, but thats less than Ideal. I'd prefer to say $("#list").gridview('reload') or $.fn.gridview.reload("#list") or some such sense. Or do the way cool thing that is soo much simpler that you thought of just now.

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• Visual Studio 2008 Crashes When Opening Project Properties

  - by Joseph Sturtevant

  I have a multi-project .NET application which I am developing in Visual Studio 2008. If I try to open the project properties for one of my projects (to change settings or publish) Visual Studio immediately closes. There is no prompt to send a report to Microsoft, and two consecutive errors logged in the Event Viewer: .NET Runtime version 2.0.50727.3053 - Fatal Execution Engine Error (7A035E00) (80131506) .NET Runtime version 2.0.50727.3053 - Fatal Execution Engine Error (7A2E0F92) (0) If I delete all the .user and .suo files in my solution, I can once again publish and access project properties. The error, however, returns over time. This seems to suggest that the .suo or .user files are getting corrupted by Visual Studio. Has anyone else had this issue or know how to fix the problem?

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• Oracle: error while trying to use formulas

  - by Yazeed

  I created an element with an input value of type "Day" , when i write a formula i get this error. Any idea what's wrong? APP-FF-33232: EATC_EXTRA_DAYS_ENTRY_EFFECTIVE_DATE_ENTRY_VALUE has null or not found allowed, but no default set specified. Cause: If a Database Item has null allowed, or not found allowed, then the item must also specify a default set to be used to provide default values in the event of these occurring. The item named has one of these conditions allowed, but the default set column in the FF_DATABASE_ITEMS table is null. Action: Please refer to your local support representative. -

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