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• Delphi 2010 buttons losing click event

  - by Lobuno

  I've been experimenting a quite strange problem using Delphi 2010. In one form (a quite complex one) some buttons are automagically losing the click event. I am not dynamically assigning the event or something (they are wired in IDE). The events are fired OK some times but suddenly (and randomly) some of them don't fire the events anymore. Placing a break point in the event doesn't stop the execution. Weird, yes, and I'm lost. I know there is no explanation for this so I only want to ask if there is anybody else experimenting the same problem.

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• WPF Window Drag/Move Boundary

  - by Sentax

  Hi everyone, just curious if you know of any way to setup a drag boundary for a window? It would be nice to have these properties: Me.MinLeft = 10 Me.MinTop = 10 Me.MaxLeft = 150 Me.MaxTop = 150 Those are made up properties, btw, which would be nice to have. I know I could probably setup a timer to fire ever 10th of a second and check the left and top and then move it back if it's over. But it would be more elegant to have the window act like it hit a wall and can't go any farther, like moving to the edge of the screen or something similar. Edit: There seems to be some confusion somewhere, the point I'm trying to make is in the paragraph above, dragging, not re-sizing.

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• Validation in asp.net MVC - validation only to happen when "asked"

  - by jeriley

  I've got a slightly different validation requirement than the usual "when save, validate!". The system can allow someone to update a bunch of times without being "bothered" with a validation listing UNTIL they say it's complete. I thought I might be able to pull a fast one and put the [HandleError] on the method of which this would fire, but that validates every save. Is there an attribte I can put into my custom validator that can handle this or am I going to have to write up my own HandleError attribute?

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• Force validation on bound controls in WPF

  - by Valentin Vasilyev

  Hello. I have a WPF dialog with a couple of textboxes on it. Textboxes are bound to my business object and have WPF validation rules attached. The problem is that user can perfectly click 'OK' button and close the dialog, without actually entering the data into textboxes. Validation rules never fire, since user didn't even attempt entering the information into textboxes. Is it possible to force validation checks and determine if some validation rules are broken? I would be able to do it when user tries to close the dialog and prohibit him from doing it if any validation rules are broken. Thank you.

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• Scheduled task with windows services and system.timer.timer

  - by nccsbim071

  Hi i want implement a windows services scheduled task. I already created windows service. In a service i have implemented a timer.The timer is initialized at class interval. The timers interval is set in the start method of service and also it is enabled in the start method of the service. After timers elapsed event is fire i have done some actions. My problem is that, i am in a dilemma. Lets say the action i have done in Elapsed event, lets say take one hour and the timers interval is set to half an hour. so there are chances that even if the previous call to elapsed event has not ended new call to elapsed event will occur. my question will there be any conflict or is it ok or shall i use threads. please give some advice

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• Binding to a WPF hosted control's DependencyProperty in WinForms

  - by Reddog

  I have a WinForms app with some elements that are hosted WPF user controls (using ElementHost). I want to be able to bind my WinForm's control property (Button.Enabled) to a custom DependencyProperty of the hosted WPF user control (SearchResults.IsAccountSelected). Is it possible to bind a System.Windows.Forms.Binding to a property managed by a DependencyProperty? Also, since I know the System.Windows.Forms.Binding watches for INotifyPropertyChanged.PropertyChanged events - will a property backed by a DependencyProperty automatically fire these events or will I have to implement and manage the sending of PropertyChanged events manually?

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• robocode engine: how to design (write) the runtime engine -- the robot world

  - by Bob

  IBM has (had) a free learn-Java program called RoboCode, in which custom robots could be written that would then do battle in a 2D space. I would like to write the environment that supports such robots, but don't know what pattern or design to use. Each robot is a thread. Each thread is given a certain (indeterminate) amount of run-time by the JRE. A robot world engine would start by building a list of the players/robots, then enter a loop that allows each player in turn to do whatever it likes: move forward, turn left, fire toward the northwest corner, whatever. Each robot is also informed of events of interest: an enemy or several enemies are within range, it has been hit by a bullet, etc. The combination of handling threads that are also event listeners (are they also producers?) confuses me; it seems that there's more to the game engine. Even some general ideas would help. TIA.

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• MVP on Asp.Net WebForms

  - by Nicolas Irisarri

  I'm not clear about this.... When having a gridview on the View, is the controller who has to set up the Data source, columns, etc? or I just have to expose the DataBinding stuff, fire it from the controller and let the html/codebehind on the view handle all the rendering and wiring up? To be more precise: on the view should I have private GridView _gv public _IList<Poco> Source { get {_gv.DataSource;} set {_gv.DataSource = value; _gv.DataBind();} } Or should it be (from http://stackoverflow.com/questions/153222/mvp-pattern-passive-view-and-exposing-complex-types-through-iview-asp-net-web) private GridView _datasource; public DataSource { get { return _datasource; } set { _datasource = value; _datasource.DataBind(); } } Maybe I'm having it all wrong .... Where can I find an example that is not a "Hello world" example on MVP for ASP.Net???

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• forcing Validation; WPF, DataGrid, ObservableCollection

  - by Steve Mills

  I have a WPF DataGrid. I read a csv file and build an ObservableCollection of objects. I set the DataGrid.ItemsSource to the Collection. I would like to then force a RowValidation on every row in the DataGrid. If I, playing user, edit a cell, the RowValidation fires, all is well. But the Validation does not fire on the initial load. Is there some way I can call ??ValidateRow?? on a row? on every row? (C#, WPF, VS2008, etc)

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• Facebook Graph API - authorization types?

  - by Alex Cook

  I'm struggling with the new Facebook Graph API, perhaps someone here can help. Here is what I want to do: provide a ‘login w/ FB’ button, throw to /authorize, get a code, throw to /access_token, get an access_token, and be able to hit https://graph.facebook.com/me for info about the user. When I try to use type=client_cred in the /authorize call, I get an access_token that lets me hit URLs with userIDs or names, but not /me. I receive an error stating I need a valid token. If I can't hit /me, how do I figure out who the current user is? What exactly should I use in the type param if I want a website to access a users data? I've seen posts with type=web_server, etc, but I can't seem to find a sure fire way to do, what I think, is pretty simple... Thanks ahead of time for any help thats provided...

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• getting count(*) using createSQLQuery in hibernate?

  - by JohnSmith

  I have several sql queries that I simply want to fire at the database. I am using hibernate throughout the whole application, so i would prefer to use hibernate to call this sql queries. In the example below i want to get count + name, but cant figure out how to get that info when i use createSQLQuery(). I have seen workarounds where people only need to get out a single "count()" from the result, but in this case I am using count() + a column as ouput SELECT count(*), a.name as count FROM user a WHERE a.user_id IN (SELECT b.user_id FROM user b) GROUP BY a.name HAVING COUNT(*) BETWEEN 2 AND 5; fyi, the above query would deliver a result like this if i call it directly on the database: 1, John 2, Donald 1, Ralph ...

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• AJAX binds jquery events multiple times

  - by Dynde

  Hi... I have a masterpage setup, with a pageLoad in the topmost masterpage, which calls pageLoad2 for nested masterpages which calls pageLoad3 for content pages. In my content page I have a jquery click event and in my nested masterpage I have a web user control. Whenever I use the user control in the nested masterpage, it rebinds the click event in the content page (undoubtedly because the pageLoad3 is called again), but this makes the click event fire twice on a single click. The problem gets worse the higher up masterpages you go (eg. fires 3 times if user control from topmost masterpage is called). Can anyone tell me how to make sure it only binds the jquery events once?

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• Microsoft Workflow - "Event cannot be delivered"

  - by Wojtek

  I have strange problem. My application is using Windows Workflow Foundation. It is simple app that creates requests and then other presons accepts/denies these requests. Everything was working very fine until my client took application to other servers (app and db). From this time WF instances are created in DB but when app tries to fire event to WF instance it strikes exception: "Event "EventName" for instance id "instanceGUID" cannot be delivered". What went wrong? Any suggestion where to start find the problem?

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• Silverlight Listbox firing MouseRightButtonDown, but not MouseLeftButtonDown

  - by Steav

  I have this problem in a bigger Project...... so I set up a 'Testpoject' as Proof of Concept: New Silverlight-Application Add Listbox Fill listbox with a few Checkboxes Register listBox1_MouseLeftButtonDown register listBox1_MouseRightButtonDown You will see, that the listBox1_MouseLeftButtonDown won't fire under any circumstances.... listBox1_MouseRightButtonDown however fires just fine. I tried using a custom Class deriving from ListBox and overriding, assuming something in the ListBox Class was setting e.Handled = false, but this did not change the behaviour, either. Any Ideas on why this happens and how to fix? (This problem also stops the 'parent'-control from receiving the Click-Event... so the Event-passing is broke)

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• Why does a ModalPopupExtender fail when using SSL?

  - by Brooke Jackson

  I have created a modal popup using the ModalPopupExtender in Microsoft's AJAX 1.0 for .NET 2.0. It works great when the page doesn't isn't being accessed through SSL (http://) however the link to close the popup fails to fire if accessing the page through https://. Is the ModalPopupExtender at blame? Is it a "Feature" of SSL to block popups, or is it something else I haven't though of? Here is the code I am using: <asp:Button ID="btnHelp" runat="server" Text="?" CausesValidation="False" /> <asp:Panel ID="pnlHelp" BackColor="white" runat="server"> <asp:LinkButton ID="lnkClosePanel" runat="server" CausesValidation="False" OnClick="lnkCloseHelp_Click">Close</asp:LinkButton> <p>Some Text</p> </asp:Panel> <cc1:ModalPopupExtender ID="popExt" runat="server" TargetControlID="btnHelp" PopupControlID="pnlHelp"></cc1:ModalPopupExtender>

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• WPF, TreeView bug, can't select root item after item removed from treeview

  - by user275587

  I have a very weird bug in a three level deep TreeView. It is intermittent and I can't find how to reproduce it consistently. After programmatically removing, adding then removing some third level items, when I click on the root item it isn't selected. It can still expand/collapse but can't be selected with a mouse click and it doesn't fire ItemSelectionChange event. You can click to select a second level or third level items and after that you're finally able to select the root item. I've tried to set IsSelected = false for all items after removing and tried to do a nice clean-up when removing items but it doesn't help. Did anybody run into that bug? Do you have any suggestions to remove this bug?

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• SSRS - Unable to determine if the owner of job has server access [SQLSTATE 42000] (Error 15404))

  - by John DaCosta

  SQL Server Reporting Services, in SSRS it seems like Schedules never fire, however a look at the SQL Agent reveals a permission issue related to not being able to resolve a user account. Seems SQL Agent does not rely on caching or whatever voodoo Windows magically works. link text Fix is listed here... edit -- Above is the fix I used to workaround this issue, has any one found any other work arounds or resolutions to this issue? It seems that by default the SSRS Generated Schedules are run as this phantom user account. How do I change this default? Is SSRS creating the jobs as the user the service runs as? Thanks Remus

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• WinForms Taskbar Icon - Click Event not firing

  - by Greycrow

  I have created a non-form c# program that uses the NotifyIcon class. The text "(Click to Activate)" shows up when I hover the mouse. So I am getting some events handled. However, The "Click" event does not fire and the Context menu doesnt show up. public class CTNotify { static NotifyIcon CTicon = new NotifyIcon(); static ContextMenu contextMenu = new ContextMenu(); static void Main() { //Add a notify Icon CTicon.Icon = new Icon("CTicon.ico"); CTicon.Text = "(Click to Activate)"; CTicon.Visible = true; CTicon.Click += new System.EventHandler(CTicon_Click); //Create a context menu for the notify icon contextMenu.MenuItems.Add("E&xit"); //Attach context menu to icon CTicon.ContextMenu = contextMenu; while (true) //Infinite Loop { Thread.Sleep(300); //wait } } private static void CTicon_Click(object sender, System.EventArgs e) { MessageBox.Show("Clicked!"); } }

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• GD DLL installation

  - by smokinguns

  I'm using the JpGraph library(PHP graphing Lib). I'm getting the foll error: "JpGraph Error Your PHP installation does not seem to have the required GD 2.x library enabled. Please see the PHP documentation, "Image" section. Make sure that "php_gd2.dll" statement is uncomment in the [modules] section in the php.ini file" I uncommented the php_gd2.dll statement in php.ini(in C:\WINDOWS) and set the 'extension_dir' as extension_dir = C:\PHP\extensions (I have a extensions directory and put the php_gd2.dll in this directory ). I restarted IIS and when I fire up my webapp, it doesnt comeup. I commented out the php_gd2.dll and restarted IIS again. The webapp came up. I dont understand what I'm doing wrong. Here is the server config: Windows Server 2003, with IIS Version 6. The PHP version is 4.3.8

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• What's the Best Practice for Firing Manual OnClick Events?

  - by Tyler Murry

  Hey guys, I've got an XNA project that will be drawing several objects on the screen. I would like the user to be able to interact with those items. So I'm trying to build a method that checks to see which object the mouse is over, out of those which is the top most, and then fire an OnClick event for that object. Checking for the things above is not the problem, but where to actually put that logic is most of the issue. My initial feeling is that the checking should be handled by a master object - since it doesn't make sense for an object, who ideally knows only about itself, to determine information about the other objects. However, calling OnClick events remotely from the master object seems to be counter-intuitive as well. What's the best practice in this situation? Thanks, Tyler

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• "Collection was modified..." Issue

  - by Tyler Murry

  Hey guys, I've got a function that checks a list of objects to see if they've been clicked and fires the OnClick events accordingly. I believe the function is working correctly, however I'm having an issue: When I hook onto one of the OnClick events and remove and insert the element into a different position in the list (typical functionality for this program), I get the "Collection was modified..." error. I believe I understand what is going on: The function cycles through each object firing OnClick events where necessary An event is fired and the object changes places in the list per the hooked function An exception is thrown for modifying the collection while iterating through it My question is, how to do I allow the function to iterate through all the objects, fire the necessary events at the proper time and still give the user the option of manipulating the object's position in the list? Thanks, Tyler

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• XML Signature in a Web application

  - by OpenDevSoft

  Hi, We are developing an e-Banking web application for a small bank (up to 20000 clients/users). We have to implement digital signatures with X509 certificates (issued by CA on USB tokens) for signing payment information. We tried using CAPICOM but it seems that it is not working well with Windows Vista (have not tried it with Win 7). The other problem is that core banking system can process only Xml digital signatures, so we have to sign XML documents (not just a bulk-formatted text data like with CAPICOM and Win32 Crypto API). So my questions here are: Does anyone of you have similar problem and how did they solved it? Is there a plug-in, library, component or external tool (for Internet Explorer and/or Fire Fox) that supports XML Digital Signatures in a web application? Can you please recommend some of these products and write something about your experience with them? Thank you very much.

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• How can I make the Telerik progress bar work?

  - by Darien Fawkes

  I have a Telerik progress bar in my project: <telerik:RadProgressManager ID="RadProgressManager" Runat="server" /> <telerik:RadProgressArea ID="RadProgressArea" Runat="server"></telerik:RadProgressArea> <asp:button id="Button1" runat="server" text="Submit" /> On button click I try to run this method: private void MethodWhichUpdatesTheProgressContext(UploadedFile file, int countFile) { const int total = 100; RadProgressContext ProgressContex = RadProgressContext.Current; ProgressContex.SecondaryTotal = "100"; for (int i = 0; i < total; i++) { ProgressContex.CurrentOperationText = "Uploading zip file percentage " + i.ToString(); if (!Response.IsClientConnected) { break; } System.Threading.Thread.Sleep(100); } } Project builds without any errors but progress doesn't change. How do I properly fire the progress bar animation? If I put this progress bar on control, it can effect this?

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• JQuery preventDefault() but still add the fragment path to the URL without navigating to the fragment

  - by jdln

  My question is similar to this one but none of the answers solve my problem: Use JQuery preventDefault(), but still add the path to the URL When a user clicks a fragment link, I need to remove the default behaviour of jumping to the fragment but still add the fragment to the URL. This code (taken from the link) will fire the animation, and then add the fragment to the URL. However the fragment is then navigated to, which im my case breaks my site. $("#login_link").click(function (e) { e.preventDefault(); $("#login").animate({ 'margin-top': 0 }, 600, 'linear', function(){ window.location.hash = $(this).attr('href'); }); });

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• Adobe AIR: touch screen doesn't trigger mouse down event correctly

  - by Saariko

  i have designed a gaming kiosk app in as3 i am using it on a Sony vaio l pc (like hp's touchsmarts) in windows 7 the app doesn't need any multi-touch gestures (only single touch clicks and drags) so i am using mouse events everything is fine (including mouse click and move events) except that a single touch to the screen (with no move) doesn't fire a mouse down. it is fired only after a small move of the finger outside the app, on my desktop, i see that the small windows 7 cursor jumps immediately to where a finger is placed, meaning this issue isn't a hardware or a windows problem but rather how internally the flash app receives "translated" touch-to-mouse events from the os. for example, in a windows Solitaire game, a simple touch to the screen immediately highlights the touched card. in my app, a button will change to the down state only if i touch it and also move my finger slightly (click events - down and up - are triggered fine) shouldn't the MOUSE_DOWN event trigger exactly like how a TOUCH_BEGIN would in the new touchevent class? any ideas?

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