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• Unit Tests in Visual Studio 2010

  - by Ben

  Hi, i am trying to create a Unit test for a WinForm in a Visual Studio 2010 project. I add a new "Coded UI Test" to my project, open up the code file, then right click and select "Generate Code for Coded UI Test" - "Use Coded UI Test builder". I then start my application up, select "Record" on the UI Map control. I run my tests (in this case simply select a textbox, type in a random value, them click a button). I then select "Generate Code" from the UI Map control which generates the code which the test will use. When running this test, i get the error: Test method HelloWorldTest.CodedUITest1.CodedUITestMethod1 threw exception: Microsoft.VisualStudio.TestTools.UITest.Extension.UITestControlNotFoundException: The playback failed to find the control with the given search properties. Additional Details: TechnologyName: 'MSAA' ControlType: 'Window' Name: 'Form1' ClassName: 'WindowsForms10.Window' --- System.Runtime.InteropServices.COMException: Error HRESULT E_FAIL has been returned from a call to a COM component. Does anyone know where i am going wrong? Thanks

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• AdMob ads on Android app are not rotating / refreshing

  - by Ben Mc

  Has anyone else had this problem? I have a game, and the Ads show at the top of the phone above my game view. When I'm tapping away on the game, the ads just stay the same. BUT, if I don't touch anything and wait the 15 seconds, as is set in my Interval, THEN the ad changes (usually). I don't get any error reports. There's nothing to indicate that this shouldn't be working just fine, but I have no idea why my ads aren't refreshing or rotating while I'm interacting with the other View in my application. Any direction or thoughts would be helpful, thank you!

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• Good tutorial for ASP.net mvc 2

  - by Ben Robinson

  I am an experienced asp.net web forms developer using c# but i have never used asp.net MVC. As I am just starting out with mvc i would like to start with mvc 2. I am looking for a good intro/tutorial to help me understand the basics. I am aware of the Nerd Dinner but that is based around MVC 1. What would you guys recomend for me to get started. Should i work through the nerd dinner tutorial then once i have a good understanding of mvc then research the new features of mvc 2 or is there a similar getting started tutorial for mvc 2. Sugestions of good books to read are also welcome. In fact any advice on getting started on mvc 2 would be good.

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• drawRect not being called in my subclass of UIImageView

  - by Ben Collins

  I have subclassed UIImageView and tried to override drawRect so I could draw on top of the image using Quartz 2D. I know this is a dumb newbie question, but I'm not seeing what I did wrong. Here's the interface: #import <UIKit/UIKit.h> @interface UIImageViewCustom : UIImageView { } - (void)drawRect:(CGRect)rect; And the implementation: #import "UIImageViewCustom.h" @implementation UIImageViewCustom - (id)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { } return self; } - (void)drawRect:(CGRect)rect { // do stuff } I set a breakpoint on drawRect and it never hits, leading me to think it never gets called at all. Isn't it supposed to be called when the view first loads? Have I incorrectly overridden it?

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• How do I change the URL for the wordpress author archive page?

  - by Ben Burleson

  Instead of www.example.com/author/xyz, I want to use www.example.com/artist/xyz. I was hoping it was as easy as copying author.php to artist.php in my theme directory, but no such luck. Where does wordpress handle the special processing for the author archive pages? .htaccess rewriting is another option, but I wasn't able to get anything to work with the existing wordpress rewrite rules. Thanks,

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• Creating a Wiki site in SharePoint 2010

  - by Ben

  I have a SharePoint 2010 site set up and would like to add a Wiki site to it. Normally, to add a subsite to a parent site you would click "Site Actions" - "New Site" and choose the site type (e.g. Team Site) and it would work fine. In the case of adding a Wiki site, I choose "Enterprise Wiki", and get "Error An Unexpected Error has occured Correlation Id:...". So i took the CorrelationId and checked in the ULS files to see what the error is, and the first bad sign seems to be: SharePoint Foundation Feature Infrastructure " The element of type 'ContentTypeBinding' for feature 'EnterpriseWiki' (id: 76d688ad-c16e-4cec-9b71-7b7f0d79b9cd) threw an exception during activation: Specified argument was out of the range of valid values. Parameter name: Content type not found (Id: '0x010100C568DB52D9D0A14D9B2FDCC96666E9F2007948130EC3DB064584E219954237AF39004C1F8B46085B4D22B1CDC3DE08CFFB9C')." There are more errors in the log, but this seems to be the first one. Any ideas on whats going on? Thanks

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• WCF Vs Web Services

  - by Ben

  Hi, I am about to re-release my website that i have transformed into a SilverLight Site, and was wondering if it is worth while updating the web service that it hosts into a WCF Service. The Service doesn't do too much at the moment, but i will be growing it fairly substantially. I have read a few articles on the differences between asmx web services and WCF Services and can't really see the benefits of WCF, but i am probably very wrong. Could anyone advise of the advantages of WCF and if is worth while me making the move (on the basis that you know it's a small service at the moment, but will be growing). Thanks

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• jQuery UI Tabs force delay before changing tab on mouseover

  - by Ben

  Using the jQuery UI Tabs 1.7.2 with jQuery 1.4.2, is there a way to make it so that when you mouseover a tab, there is a delay before the tab switches? I've been looking into using the hoverIntent plugin to do this, but cannot figure out how it would fit in. Right now my code looks like: var tabs = $('.tabs').tabs({ event: 'mouseover' }); I've tried playing around with a callback on the show event, but I think I'm doing it wrong or not clear on when the callback happens: $( ".tabs" ).tabs({ show: function(event, ui) { setTimeout("FUNCTION_TO_CHANGE_TAB?", 200); } }); Any help would be greatly appreciated.

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• Javascript floodlight tracking iframe leaves browser window blank, please help!

  - by Ben Paton

  Hello, I have been asked to implement a javascript floodlight tag onto my site which is to be called everytime a customer downloads a pdf file. I have tried to implement this as follows: <script type="text/javascript"> function appForm() { var axel = Math.random() + ""; var a = axel * 10000000000000; document.write('<IFRAME SRC="http://fls.doubleclick.net/activityi;src=1234567;type=count123;cat=123do456;ord=1;num='+ a + '?" WIDTH=1 HEIGHT=1 FRAMEBORDER=0></IFRAME>'); return false; } <a href="appForm.pdf" target="_blank" onClick="appForm();">Download PDF</a> This seems to almost work. The pdf file opens in a new window. But the window where you clicked the download link turns blank. Is there a way of opening this tracking iframe and then having the pdf opening without the parent window going blank? Your help will be very much appreciated on this.

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• Alternative for my preg_replace code

  - by Ben Sinclair

  Here is my code... basically it finds any page-NUMBER- within a variable and then replaces it with a page url from an array $content_text = preg_replace("/page-(\d+)-/sie", '$pageurl[$1]', $content_text); It works a treat until the NUMBER it finds isn't in the array and it returns an error... Is there another efficient way I could do this instead? I liked my code above because it was simple but I may have to use more complex code...

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• Understanding ItemsSource and DataContext in a DataGrid

  - by Ben McCormack

  I'm trying to understand how the ItemsSource and DataContext properties work in a Silverlight Toolkit DataGrid. I'm currently working with dummy data and trying to get the data in the DataGrid to update when the value of a combo box changes. My MainPage.xaml.vb file currently looks like this: Partial Public Class MainPage Inherits UserControl Private IssueSummaryList As List(Of IssueSummary) Public Sub New() GetDummyIssueSummary("Day") InitializeComponent() dgIssueSummary.ItemsSource = IssueSummaryList 'dgIssueSummary.DataContext = IssueSummaryList ' End Sub Private Sub GetDummyIssueSummary(ByVal timeInterval As String) Dim lst As New List(Of IssueSummary)() 'Generate dummy data for lst ' IssueSummaryList = lst End Sub Private Sub ComboBox_SelectionChanged(ByVal sender As System.Object, ByVal e As System.Windows.Controls.SelectionChangedEventArgs) Dim cboBox As ComboBox = CType(sender, ComboBox) Dim cboBoxItem As ComboBoxItem = CType(cboBox.SelectedValue, ComboBoxItem) GetDummyIssueSummary(cboBoxItem.Content.ToString()) End Sub End Class My XAML currently looks this for the DataGrid: <sdk:DataGrid x:Name="dgIssueSummary" AutoGenerateColumns="False" > <sdk:DataGrid.Columns> <sdk:DataGridTextColumn Binding="{Binding ProblemType}" Header="Problem Type"/> <sdk:DataGridTextColumn Binding="{Binding Count}" Header="Count"/> </sdk:DataGrid.Columns> </sdk:DataGrid> The problem is that if I set the value of the ItemsSource property of the data grid equal to IssueSummaryList, it will display the data when it loads, but it won't update when the underlying IssueSummaryList collection changes. If I set the DataContext of the grid to be IssueSummaryList, no data will be displayed when it renders. I must not understand how ItemsSource and DataContext are supposed to function, because I expect one of those properties to "just work" when I assign a List object to them. What do I need to understand and change in my code so that as data changes in the List, the data in the grid is updated?

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• Delphi Imagelist: Load icons with ResourceLoad from a .res

  - by ben

  Hi guys, I', trying to load an icon from a res file into an image list. I created the res file with the delphi ImageEditor. And this way I'm trying to load the icon: //if ImageList1.ResourceLoad(rtIcon, 'TEXT_BOLD', clWhite) then if imagelist1.GetResource(rtIcon, 'TEXT_BOLD', 0, [lrDefaultColor], clRed) then showmessage('loaded') else showmessage('not loaded'); Both ways doesn't work. Any ideas? Thanks!

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• abap convert date

  - by ben

  Hi there, I'm new to abap and just writing my first application. Now I got a date of the type SYDATUM and wondering how to format it in a format like m/d/y. I've found some snippets on the web, but there were not really helpful. -thanks yor your help.

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• How to unit test asynchronous APIs?

  - by Ben Clayton

  Hi all. I have installed Google Toolbox for Mac (http://code.google.com/p/google-toolbox-for-mac/) into Xcode and followed the instructions to set up unit testing found here (http://code.google.com/p/google-toolbox-for-mac/wiki/iPhoneUnitTesting). It all works great, and I can test my synchronous methods on all my objects absolutely fine. However, most of the complex APIs I actually want to test return results asynchronously via calling a method on a delegate - for example a call to a file download and update system will return immediately and then run a -fileDownloadDidComplete: method when the file finishes downloading. How would I test this as a unit test? It seems like I'd want to the testDownload function, or at least the test framework to 'wait' for fileDownloadDidComplete: method to run. Any ideas much appreciated!

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• Android: how to place a button at an x,y position over top of Canvas

  - by Ben Mc

  Is it possible to place buttons at an X,Y position over the top of a Canvas? For example, on the opening screen of my game, I would like to place buttons for "Play Now", "Instructions", etc, right on top of the canvas. Right now, I'm looking at Touch locations on the Canvas and comparing them to various X,Y bounds. It works, but adding a button with a click listener would probably be much more efficient.

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• Enums for Build Flavor and Build Platform in .NET

  - by Ben Hughes

  Are there enums available in the .NET framework that have values for build flavor (Debug, Release) and build platform (Any CPU, x86, x64 etc)? I haven't been able to find anything on MSDN or Google. It seems unnecessarily cumbersome to create my own.

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• Tapestry / JDBC - Storing Date

  - by Ben

  So Im using Tapestry and trying to store a date from a beaneditform into a simple Access database. It wont work, Im getting Null pointer exceptions and I cannot understand why. String onSuccess() { System.out.println("in on success!"); String nextPage = null; try { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); connection = DriverManager.getConnection("jdbc:odbc:FYP_Users"); DateFormat df = new SimpleDateFormat("dd/MM/yyyy"); Date ed = occasion.getEventDate(); String reportDate = df.format(ed); statement.executeUpdate("INSERT INTO Events (UserName, EventName, EventDate, EventTime, EventDetails, People, Rating) " + "VALUES ('" + login.getUserName() + "', '" + occasion.getEventName()+ "', '" + reportDate + "', '" + occasion.getEventTime() + "', '" + occasion.getEventDetails() + "', '" + occasion.getPeople() + "', '"+ "1" +"')"); connection.close(); occasion = new Occasion(); //occasion.setUserName(occasion.getUserName()); occasion.setEventName(occasion.getEventName()); occasion.setEventDate(occasion.getEventDate()); occasion.setEventTime(occasion.getEventTime()); occasion.setEventDetails(occasion.getEventDetails()); occasion.setPeople(occasion.getPeople()); //occasion.setRating(occasion.getRating()); nextPage = "UserIndex"; } catch (SQLException e) {e.printStackTrace();} catch (ClassNotFoundException e) {e.printStackTrace();} return nextPage; } Stack trace java.util.Calendar.setTime(Unknown Source) java.text.SimpleDateFormat.format(Unknown Source) java.text.SimpleDateFormat.format(Unknown Source) java.text.DateFormat.format(Unknown Source) myappj.pages.CreateOccasion.onSuccess(CreateOccasion.java:61) myappj.pages.CreateOccasion.dispatchComponentEvent(CreateOccasion.java) org.apache.tapestry5.internal.structure.ComponentPageElementImpl.dispatchEvent(ComponentPageElementImpl.java:902) org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1081) org.apache.tapestry5.internal.structure.InternalComponentResourcesImpl.triggerContextEvent(InternalComponentResourcesImpl.java:263) org.apache.tapestry5.corelib.components.Form._$advised$onAction(Form.java:398) org.apache.tapestry5.corelib.components.Form$onAction$invocation_128ef468876.invokeAdvisedMethod(Form$onAction$invocation_128ef468876.java) org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:71) org.apache.tapestry5.ioc.internal.services.LoggingAdvice.advise(LoggingAdvice.java:37) org.apache.tapestry5.internal.transform.LogWorker$1.advise(LogWorker.java:54) org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:80) org.apache.tapestry5.corelib.components.Form.onAction(Form.java) org.apache.tapestry5.corelib.components.Form.dispatchComponentEvent(Form.java) org.apache.tapestry5.internal.structure.ComponentPageElementImpl.dispatchEvent(ComponentPageElementImpl.java:910) org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1081) org.apache.tapestry5.internal.services.ComponentEventRequestHandlerImpl.handle(ComponentEventRequestHandlerImpl.java:75) org.apache.tapestry5.internal.services.ImmediateActionRenderResponseFilter.handle(ImmediateActionRenderResponseFilter.java:42) $ComponentEventRequestHandler_128ef45bf4a.handle($ComponentEventRequestHandler_128ef45bf4a.java) org.apache.tapestry5.internal.services.AjaxFilter.handle(AjaxFilter.java:42) $ComponentEventRequestHandler_128ef45bf4a.handle($ComponentEventRequestHandler_128ef45bf4a.java) org.apache.tapestry5.services.TapestryModule$36.handle(TapestryModule.java:2164) $ComponentEventRequestHandler_128ef45bf4a.handle($ComponentEventRequestHandler_128ef45bf4a.java) $ComponentEventRequestHandler_128ef45bea5.handle($ComponentEventRequestHandler_128ef45bea5.java) org.apache.tapestry5.internal.services.ComponentRequestHandlerTerminator.handleComponentEvent(ComponentRequestHandlerTerminator.java:43) $ComponentRequestHandler_128ef45be99.handleComponentEvent($ComponentRequestHandler_128ef45be99.java) org.apache.tapestry5.internal.services.ComponentEventDispatcher.dispatch(ComponentEventDispatcher.java:46) $Dispatcher_128ef45be9b.dispatch($Dispatcher_128ef45be9b.java) $Dispatcher_128ef45be92.dispatch($Dispatcher_128ef45be92.java) org.apache.tapestry5.services.TapestryModule$RequestHandlerTerminator.service(TapestryModule.java:245) org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26) $RequestHandler_128ef45be93.service($RequestHandler_128ef45be93.java) org.apache.tapestry5.services.TapestryModule$4.service(TapestryModule.java:778) $RequestHandler_128ef45be93.service($RequestHandler_128ef45be93.java) org.apache.tapestry5.services.TapestryModule$3.service(TapestryModule.java:767) $RequestHandler_128ef45be93.service($RequestHandler_128ef45be93.java) org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:85) $RequestHandler_128ef45be93.service($RequestHandler_128ef45be93.java) myappj.services.AppModule$1.service(AppModule.java:90) $RequestFilter_128ef45be8e.service($RequestFilter_128ef45be8e.java) $RequestHandler_128ef45be93.service($RequestHandler_128ef45be93.java) org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:90) org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:81) org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:85) org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:103) $RequestHandler_128ef45be93.service($RequestHandler_128ef45be93.java) $RequestHandler_128ef45be88.service($RequestHandler_128ef45be88.java) org.apache.tapestry5.services.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:197) org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:53) $HttpServletRequestHandler_128ef45be8a.service($HttpServletRequestHandler_128ef45be8a.java) org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62) $HttpServletRequestFilter_128ef45be87.service($HttpServletRequestFilter_128ef45be87.java) $HttpServletRequestHandler_128ef45be8a.service($HttpServletRequestHandler_128ef45be8a.java) org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:726) $HttpServletRequestHandler_128ef45be8a.service($HttpServletRequestHandler_128ef45be8a.java) $HttpServletRequestHandler_128ef45be85.service($HttpServletRequestHandler_128ef45be85.java) org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:127) org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360) org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:722) org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:404) org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) org.mortbay.jetty.Server.handle(Server.java:324) org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505) org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:842) org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648) org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380) org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395) org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)

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• File not found on RSACryptoServiceProvider, service account permissions?

  - by Ben Scheirman

  Our web service wraps around a third party library that contains the following code. We are using an Active Directory service account in the IIS 6 app pool (no interactive login abilities). Our service fails with the error “The system cannot find the file specified”. We’ve traced the error to the “RSACryptoServiceProvider provider = new RSACryptoServiceProvider();”. The third party assembly depends on a x509 file based certificate for its encryption process and the Service Account has Read / Write access to the keys folder. Additionally, the service account has Read, Write, Modify rights to “C:\Documents and Settings\All Users\Application Data\Microsoft\Crypto\RSA\MachineKeys”. Code: StringBuilder builder = new StringBuilder(publicKeyData); builder.Replace("-----BEGIN CERTIFICATE-----", ""); builder.Replace("-----END CERTIFICATE-----", ""); X509Certificate2 certificate = new X509Certificate2( Convert.FromBase64String(builder.ToString())); string xmlString = certificate.PublicKey.Key.ToXmlString(false); RSACryptoServiceProvider provider = new RSACryptoServiceProvider(); //BOOM CspKeyContainerInfo containerInfo = provider.CspKeyContainerInfo; provider.PersistKeyInCsp = false; provider.FromXmlString(xmlString); loadedKeys.Add(key, provider); provider2 = provider; We cracked open FileMon and noticed that there is a FILE NOT FOUND for that AppPool, followed by another SUCCESS for the same exact file. I'm out of my element here, anybody have an idea as to why we're seeing this?

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• Toggle Wifi On/Off using MobileWifi private framework

  - by Ben Williams

  Hello, For a private project using the iPhone SDK (not for the app store), I would like to toggle wifi on & off. I've done something similar for Bluetooth, but can't find the required information for Wifi. I assume I need to use the MobileWifi framework. Can anyone give some directions and/or code? Most likely I expect I need a header file for the MobileWifi framework as well. Note once again, this is not for the app store, as Apple will not allow apps that use private frameworks such as this.

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• String Manipultation - Get String between two other Strings?

  - by Ben

  I have a large piece of text in which there is something simular to this: !#_KT_#!COMMANDHERE!#_KT_#! I want, in VB.Net, to get the 'COMMANDHERE' part of the string, how would I go about doing this? I have this so far: Dim temp As String = WebBrowser1.Document.Body.ToString Dim startIndex As Integer = temp.IndexOf("!#__KT__#!") + 1 Dim endIndex As Integer = temp.IndexOf("!#__KT__#!", startIndex) Dim extraction As String = temp.Substring(startIndex, endIndex - startIndex).Trim TextBox1.Text = extraction However this only removes the LAST string eg: #_KT_#! COMMAND. Any help is appreciated!

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• Restarting explorer from a batch file only opens an explorer window

  - by Ben Hooper

  In one part of a batch file (kind of), I need to restart Explorer. I use the following method to accomplish this: taskkill /f /im explorer.exe >nul explorer.exe :: I have also tried: %winDir%\explorer.exe :: start %winDir%\explorer.exe :: start /b %winDir%\explorer.exe :: start /d %winDir%\explorer.exe (as suggested by panda-34) :: :: I've even tried delaying the above commands with: ping localhost -n 11 >nul Then this happens: explorer.exe is successfully terminated (denoted by the lack of taskbar and desktop) An explorer window opens, which I am left with indefinitely (see Image 1) I can only then restart explorer by manually starting a new process from Task Manager (Win + R doesn't respond), even though explorer.exe is actually already in the process list, strangely enough.. (see Image 2)   Now, I say "kind of" as I'm running the batch file from a self-executing SFX archive, created with WinRAR. When executed, the contents of the archive are extracted to %temp% and a user-defined bootstrapper (in this case, my batch file) is run upon successful extraction. The strangest thing about it, though, is that if you manually extract the contents of the archive and run the batch file then explorer restarts correctly. It only ever glitches when called from an SFX. I'm experiencing this glitch on Windows 7 x64.   Link to an SFX archive demonstrating this, if anyone wants it: https://dl.dropbox.com/u/27573003/Social%20Distribution/restart-explorer.exe Image 1: Image 2:

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• Adding AllowPartiallyTrustedCallers with MSBuild

  - by Ben Rice

  I am using CC.Net with MSBuild tasks to build an application that is composed of a number of solutions and projects. We are using the AssemblyInfo MSBuild Community task to update version info in AssemblyInfo.cs. Unfortunately the AllowPartiallyTrustedCallers attribute doesn't get in and the AssemblyInfo task tells me that the AllowPartiallyTrustedCallers attribute is not supported by the task. Is there any way to add that attribute through MSBuild without having to resort to a custom task that just tacks the line at the end of the file after-the-fact?

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• Sending persisted JDO instances over GWT-RPC

  - by Ben Daniel

  I've just started learning Google Web Toolkit and finished writing the Stock Watcher tutorial app. Is my thinking correct that if one wants to persist a business object (like a Stock) using JDO and send it back and forth to/from the client over RPC then one has to create two separate classes for that object: One with the JDO annotations for persisting it on the server and another which is serialisable and used over RPC? I notice the Stock Watcher has separate classes and I can theorise why: Otherwise the gwt compiler would try to generate javascript for everything the persisted class referenced like JDO and com.google.blah.users.User, etc Also there may be logic on the server-side class which doesn't apply to the client and vice-versa. I just want to make sure I'm understanding this correctly. I don't want to have to create two versions of all my business object classes which I want to use over RPC if I don't have to.

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• contentEditable javascript caret placement in div

  - by Ben Mc

  I have a contentEditable div. Let's say the user clicks a button that inserts HTML into the editable area. So, they click a button and the following is added to the innerHTML of the contentEditable div: <div id="outside"><div id="inside"></div></div> How do I automatically place the cursor (ie caret) IN the "inside" div? Worse. How can this work in IE and FF?

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• Polymorphic NHibernate mappings

  - by Ben Aston

  I have an interface IUserLocation and a concrete type UserLocation. When I use ICriteria, specifying the interface IUserLocation, I want NHibernate to instantiate a collection of the concrete UserLocation type. I have created an HBM mapping file using the table per concrete type strategy (shown below). However, when I query NHibernate using ICriteria I get: NHibernate cannot instantiate abstract class or interface MyNamespace.IUserLocation Can anyone see why this is? (source code for the relevant bit of NHibernate here (I think)) My ICriteria: var filter = DetachedCriteria.For<IUserLocation>() .Add(Restrictions.Eq("UserId", userId)); return filter.GetExecutableCriteria(UoW.Session) .List<IUserLocation>(); My mapping file: <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" default-lazy="true"> <class xmlns="urn:nhibernate-mapping-2.2" name="MyNamespace.IUserLocation,MyAssembly" abstract="true" table="IUserLocations"> <composite-id> <key-property name="UserId" column="UserId" type="System.Guid"></key-property> <key-many-to-one name="Location" column="LocationId" class="MyNamespace.ILocation,MyAssembly"></key-many-to-one> </composite-id> <union-subclass table="UserLocations" name="MyNamespace2.UserLocation,MyAssembly2"> <property name="IsAdmin" /> </union-subclass> </class> </hibernate-mapping>

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