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• Windows 7, IIS 7.5, Selfssl

  - by Steve

  The windows iis6 resource kit won't install on Windows 7 (Home Premium) so I copied it from another machine and selfssl.exe is giving me: Failed to generate the cryptographic key: 0x5 I tried the instructions here but am still getting the above error. I'm trying to set the common name of the certificate to a name other than the machine name so I can avoid the certificate errors in the browser. This is a test web application. I know I can just test with the browser errors, but I'd like to mimic real world conditions as much as possible. Is there any other way to generate your own ssl certificates for iis7.5?

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• Tracking changes in Entity Framework 4.0 using POCO Dynamic Proxies across multiple data contexts.

  - by Rob Packwood

  I started messing with EF 4.0 because I am curious about the POCO possibilities... I wanted to simulate disconnected web environment and wrote the following code to simulate this: Save a test object in the database. Retrieve the test object Dispose of the DataContext associated with the test object I used to retrieve it Update the test object Create a new data context and persist the changes on the test object that are automatically tracked within the DynamicProxy generated against my POCO object. The problem is that when I call dataContext.SaveChanges in the Test method above, the updates are not applied. The testStore entity shows a status of "Modified" when I check its EntityStateTracker, but it is no longer modified when I view it within the new dataContext's Stores property. I would have thought that calling the Attach method on the new dataContext would also bring the object's "Modified" state over, but that appears to not be the case. Is there something I am missing? I am definitely working with self-tracking POCOs using DynamicProxies. private static void SaveTestStore(string storeName = "TestStore") { using (var context = new DataContext()) { Store newStore = context.Stores.CreateObject(); newStore.Name = storeName; context.Stores.AddObject(newStore); context.SaveChanges(); } } private static Store GetStore(string storeName = "TestStore") { using (var context = new DataContext()) { return (from store in context.Stores where store.Name == storeName select store).SingleOrDefault(); } } [Test] public void Test_Store_Update_Using_Different_DataContext() { SaveTestStore(); Store testStore = GetStore(); testStore.Name = "Updated"; using (var dataContext = new DataContext()) { dataContext.Stores.Attach(testStore); dataContext.SaveChanges(SaveOptions.DetectChangesBeforeSave); } Store updatedStore = GetStore("Updated"); Assert.IsNotNull(updatedStore); }

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• Using Ghostscript in a Webapplication (PDF Thumbnails)

  - by cpt.oneeye

  Hello, i am using the ghostscriptsharp wrapper for c# and ghostscript. I want to generate thumbnails out of pdf-files. Further Information on the sample-code are given here. There are different Methods imported form the ghostscript-c-dll "gsdll32.dll". [DllImport("gsdll32.dll", EntryPoint = "gsapi_new_instance")] private static extern int CreateAPIInstance(out IntPtr pinstance, IntPtr caller_handle); [DllImport("gsdll32.dll", EntryPoint = "gsapi_init_with_args")] private static extern int InitAPI(IntPtr instance, int argc, IntPtr argv); //...and so on I am using the GhostscriptWrapper for generating the thumbnails in a webapplication (.net 2.0). This class uses the methods imported above. protected void Page_Load(object sender, EventArgs e){ GhostscriptWrapper.GeneratePageThumb("c:\\sample.pdf", "c:\\sample.jpg", 1, 100, 100); } When i debug the Web-Application in Visual Studio 2008 by hitting key "F5" it works fine (a new instance of webserver is generated). When i create a WindowsForm Application it works too. The thumbnails get generated. When i access the application with the webbrowser directly (http://localhoast/mywebappliation/..) it doesn't work. No thumbnails are generated. But there is also no exception thrown. I placed the gsdll32.dll in the system32-folder of windows xp. The Ghostscript Runtime is installed too. I have given full access in the IIS-Webproject (.Net 2.0). Does anybody know why i can't access Ghostscript from my webapplication? Are there any security-issues for accessing dll-files on the IIS-Server? Greetings Klaus

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• Git for beginners: The definitive practical guide

  - by Adam Davis

  Ok, after seeing this post by PJ Hyett, I have decided to skip to the end and go with git. So what I need is a beginners practical guide to git. "Beginner" being defined as someone who knows how to handle their compiler, understands to some level what a makefile is, and has touched source control without understanding it very well. "Practical" being defined as this person doesn't want to get into great detail regarding what git is doing in the background, and doesn't even care (or know) that it's distributed. Your answers might hint at the possibilities, but try to aim for the beginner that wants to keep a 'main' repository on a 'server' which is backed up and secure, and treat their local repository as merely a 'client' resource. Procedural note: PLEASE pick one and only one of the below topics and answer it clearly and concisely in any given answer. Don't try to jam a bunch of information into one answer. Don't just link to other resources - cut and paste with attribution if copyright allows, otherwise learn it and explain it in your own words (ie, don't make people leave this page to learn a task). Please comment on, or edit, an already existing answer unless your explanation is very different and you think the community is better served with a different explanation rather than altering the existing explanation. So: Installation/Setup How to install git How do you set up git? Try to cover linux, windows, mac, think 'client/server' mindset. Setup GIT Server with Msysgit on Windows How do you create a new project/repository? How do you configure it to ignore files (.obj, .user, etc) that are not really part of the codebase? Working with the code How do you get the latest code? How do you check out code? How do you commit changes? How do you see what's uncommitted, or the status of your current codebase? How do you destroy unwanted commits? How do you compare two revisions of a file, or your current file and a previous revision? How do you see the history of revisions to a file? How do you handle binary files (visio docs, for instance, or compiler environments)? How do you merge files changed at the "same time"? How do you undo (revert or reset) a commit? Tagging, branching, releases, baselines How do you 'mark' 'tag' or 'release' a particular set of revisions for a particular set of files so you can always pull that one later? How do you pull a particular 'release'? How do you branch? How do you merge branches? How do you resolve conflicts and complete the merge? How do you merge parts of one branch into another branch? What is rebasing? How do I track remote branches? How can I create a branch on a remote repository? Other Describe and link to a good gui, IDE plugin, etc that makes git a non-command line resource, but please list its limitations as well as its good. msysgit - Cross platform, included with git gitk - Cross platform history viewer, included with git gitnub - OS X gitx - OS X history viewer smartgit - Cross platform, commercial, beta tig - console GUI for Linux qgit - GUI for Windows, Linux Any other common tasks a beginner should know? Git Status tells you what you just did, what branch you have, and other useful information How do I work effectively with a subversion repository set as my source control source? Other git beginner's references git guide git book git magic gitcasts github guides git tutorial Progit - book by Scott Chacon Git - SVN Crash Course Delving into git Understanding git conceptually I will go through the entries from time to time and 'tidy' them up so they have a consistent look/feel and it's easy to scan the list - feel free to follow a simple "header - brief explanation - list of instructions - gotchas and extra info" template. I'll also link to the entries from the bullet list above so it's easy to find them later.

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• How to convert an NSString to hex values

  - by einsteinx2

  I'd like to convert a regular NSString into an NSString with the (what I assume are) ASCII hex values and back. I need to produce the same output that the Java methods below do, but I can't seem to find a way to do it in Objective-C. I've found some examples in C and C++ but I've had a hard time working them into my code. Here are the Java methods I'm trying to reproduce: /** * Encodes the given string by using the hexadecimal representation of its UTF-8 bytes. * * @param s The string to encode. * @return The encoded string. */ public static String utf8HexEncode(String s) { if (s == null) { return null; } byte[] utf8; try { utf8 = s.getBytes(ENCODING_UTF8); } catch (UnsupportedEncodingException x) { throw new RuntimeException(x); } return String.valueOf(Hex.encodeHex(utf8)); } /** * Decodes the given string by using the hexadecimal representation of its UTF-8 bytes. * * @param s The string to decode. * @return The decoded string. * @throws Exception If an error occurs. */ public static String utf8HexDecode(String s) throws Exception { if (s == null) { return null; } return new String(Hex.decodeHex(s.toCharArray()), ENCODING_UTF8); }

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• wpf treeview ObjectDataProvider update - how?

  - by wonea

  I've been having trouble updating the data bindings which relates to a treeview. The dataset is mapped onto the ObjectDataProvider, passed through two data templates. Now I've tried updating the ObjectDataProvider with two calls, hoping that they would trigger the CreateTheDataSet() method, and rebuild the tree. Tried calling; thetreeView.ItemTemplate.LoadContent(); thetreeView.Items.Refresh(); Program code; <Window.Resources> <ObjectDataProvider x:Key="dataSetProvider" MethodName="CreateDataSet" ObjectType="{x:Type local:DataSetCreator}" /> <DataTemplate x:Key="DetailTemplate"> <TextBlock Text="{Binding Path=personname}" /> </DataTemplate> <HierarchicalDataTemplate x:Key="MasterTemplate" ItemsSource="{Binding Master2Detail}" ItemTemplate="{StaticResource DetailTemplate}"> <TextBlock Text="{Binding Path=jobname}" /> </HierarchicalDataTemplate> </Window.Resources> <x:Name="thetreeView" DataContext="{StaticResource dataSetProvider}" ItemsSource="{Binding compMaster}" ItemTemplate="{StaticResource MasterTemplate}" /> My dataset creation class; public static class DataSetCreator { public static DataSet CreateTheDataSet() { DataSet dataset = new DataSet(); // Create dataset ... blah blah return dataset; } }

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• wpf 4.0 datagrid template column two-way binding problem

  - by rouwlee

  Hello all! I'm using the datagrid from wpf 4.0. This has a TemplateColumn containing a checkbox. The IsChecked property of the checkbox is set via binding. The problem is that even if I specify the binding mode explicitly to be TwoWay, it works only in one direction. I have to mention that the same code works perfectly in .net 3.5 with the datagrid from the wpf toolkit. Please take a look at the .xaml and .cs contents. Thanks in advance, Roland <Window.Resources> <DataTemplate x:Key="IsSelectedColumnTemplate"> <CheckBox IsChecked="{Binding Path=IsSelected, Mode=TwoWay}" /> </DataTemplate> </Window.Resources> <Grid> <DataGrid x:Name="dataGrid" AutoGenerateColumns="false" CanUserAddRows="False" CanUserDeleteRows="False" HeadersVisibility="Column" ItemsSource="{Binding}" > <DataGrid.Columns> <DataGridTemplateColumn Header="Preselected" x:Name="myIsSelectedColumn" CellTemplate="{StaticResource IsSelectedColumnTemplate}" CanUserSort="True" SortMemberPath="Orientation" Width="Auto" /> </DataGrid.Columns> </DataGrid> </Grid> and the related .cs content: public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); ObservableCollection<DataObject> DataSource = new ObservableCollection<DataObject>(); DataSource.Add(new DataObject()); dataGrid.ItemsSource = DataSource; } } public class DataObject : DependencyObject { public bool IsSelected { get { return (bool)GetValue(IsSelectedProperty); } set { SetValue(IsSelectedProperty, value); } } // Using a DependencyProperty as the backing store for IsSelected. This enables animation, styling, binding, etc... public static readonly DependencyProperty IsSelectedProperty = DependencyProperty.Register("IsSelected", typeof(bool), typeof(DataObject), new UIPropertyMetadata(false, OnIsSelectedChanged)); private static void OnIsSelectedChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e) { // this part is not reached } }

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• ASP.NET MVC 3: RouteExistingFiles = true seems to have no effect

  - by Oleksandr Kaplun

  I'm trying to understand how RouteExistingFiles works. So I've created a new MVC 3 internet project (MVC 4 behaves the same way) and put a HTMLPage.html file to the Content folder of my project. Now I went to the Global.Asax file and edited the RegisterRoutes function so it looks like this: public static void RegisterRoutes(RouteCollection routes) { routes.RouteExistingFiles = true; //Look for routes before looking if a static file exists routes.MapRoute( "Default", // Route name "{controller}/{action}/{id}", // URL with parameters new {controller = "Home", action = "Index", id = UrlParameter.Optional} // Parameter defaults ); } Now it should give me an error when I'm requesting a localhost:XXXX/Content/HTMLPage.html since there's no "Content" controller and the request definitely hits the default pattern. But instead I'm seeing my HTMLPage. What am I doing wrong here? Update: I think I'll have to give up. Even if I'm adding a route like this one: routes.MapRoute("", "Content/{*anything}", new {controller = "Home", action = "Index"}); it still shows me the content of the HTMLPage. When I request a url like ~/Content/HTMLPage I'm getting the Index page as expected, but when I add a file extenstion like .html or .txt the content is shown (or a 404 error if the file does not exist). If anyone can check this in VS2012 please let me know what result you're getting. Thank you.

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• How to use Parcel in Android?

  - by Mike

  I'm trying to use Parcel to write and then read back a Parcelable. For some reason, when I read the object back from the file, it's coming back as null. public void testFoo() { final Foo orig = new Foo("blah blah"); // Wrote orig to a parcel and then byte array final Parcel p1 = Parcel.obtain(); p1.writeValue(orig); final byte[] bytes = p1.marshall(); // Check to make sure that the byte array seems to contain a Parcelable assertEquals(4, bytes[0]); // Parcel.VAL_PARCELABLE // Unmarshall a Foo from that byte array final Parcel p2 = Parcel.obtain(); p2.unmarshall(bytes, 0, bytes.length); final Foo result = (Foo) p2.readValue(Foo.class.getClassLoader()); assertNotNull(result); // FAIL assertEquals( orig.str, result.str ); } protected static class Foo implements Parcelable { protected static final Parcelable.Creator<Foo> CREATOR = new Parcelable.Creator<Foo>() { public Foo createFromParcel(Parcel source) { final Foo f = new Foo(); f.str = (String) source.readValue(Foo.class.getClassLoader()); return f; } public Foo[] newArray(int size) { throw new UnsupportedOperationException(); } }; public String str; public Foo() { } public Foo( String s ) { str = s; } public int describeContents() { return 0; } public void writeToParcel(Parcel dest, int ignored) { dest.writeValue(str); } } What am I missing? UPDATE: To simplify the test I've removed the reading and writing of files in my original example.

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• Passenger, Nginx, and Capistrano - Passenger not launching Rails app at all

  - by Throlkim

  Essentially, my route is working perfectly, Passenger seems to be loading - all is hunky-dory. Except that nothing Railsy happens. Here's my Nginx log from starting the server to the first request (ignore the different domain/route - it's because I haven't moved the new domain over yet, and it's returning a 403 error because there's no index file in the public folder): [ pid=24559 file=ext/nginx/HelperServer.cpp:826 time=2009-11-10 00:49:13.227 ]: Passenger helper server started on PID 24559 [ pid=24559 file=ext/nginx/HelperServer.cpp:831 time=2009-11-10 00:49:13.227 ]: Password received. 2009/11/10 00:49:53 [error] 24578#0: *1 directory index of "/var/www/***/current/public/" is forbidden, client: 188.221.195.27, server: ***, request: "GET / HTTP/1.1", host: "***" 2009/11/10 00:49:54 [error] 24578#0: *1 open() "/var/www/***/current/public/favicon.ico" failed (2: No such file or directory), client: 188.221.195.27, server: ***, request: "GET /favicon.ico HTTP/1.1", host: "***", referrer: "***" Someone on the RubyOnRails IRC channel suggested that it might be a webserver permissions problem. I had a suspicion that it might be a filesystem permission problem, but then Nginx runs as www-data and Passenger as root. I can load static files from within the public directory fine, but no Rails application is being launched. Does anyone have an idea? My head is gradually melting away figuring this one out! Edit: Here's the vhost file: server { listen 80; server_name ***; passenger_enabled on; location / { root /var/www/***/current/public; index index.html index.htm; } #error_page 404 /404.html; # redirect server error pages to the static page /50x.html # error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } }

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• WSRM error on Server running SQL databases

  - by Adam

  I have a Server Running Windows Server 2008 Enterprise Edition With SQL 2005. There is no problems with the server in its day to day functions but i am getting a Warning in the Event Log every 5 minutes with the following: Windows System Resource Manager encountered the following error 0x80010117. User Name will not be logged in the subsequent event logs. Error 0x80010117 User Action Address the error condition, and then try again. This has been happening for over 2 weeks now and i cannot find anything online to help! If i could have some help, then it would much appreciated. Thanks

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• JoinDomainOrWorkgroup Method FJoinOptions help

  - by Ben

  Anyone have experience of using the JoinDomainOrWorkgroup Method of the Win32_ComputerSystem Class? I want to write a powershell script to join a machine to a domain. There may be an existing computer account for the machine, and if so I want to delete it and rejoin to the domain. I've already scripted the "search and destroy" part that will delete the computer account if it exists, but just noticed the FJoinOptions switches on Technet. Trouble is - they're a bit ambiguous. Does 4 (0x4) Deletes an account when a domain exists. mean it will delete the computer account if it already exists on the domain? Also, can you specify the computername you want to join the machine under with this method, or should you do a rename and then join the domain. Cheers, Ben NB - I've been using the guide at http://msdn.microsoft.com/en-us/library/aa392154(VS.85).aspx - not sure if there's a better resource out there.

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• Integrating Google Analytics into GWT application

  - by Domchi

  This should be totally simple but I can't get it working no matter what I try. I'm trying to use Google Analytics with GWT application. From what I understood, there are two way to do it: First is synchronous, by inserting tracking code at the end of <head> section HTML page and then calling this method: public static native void recordAnalyticsHit(String pageName) /*-{ pageTracker._trackPageview(pageName); }-*/; Second is asynchronous, by inserting tracking code just after <body> tag and then calling this method: public static native void recordAnalyticsHit(String pageName) /*-{ _gaq.push(['_trackPageview(' + pageName + ')']); }-*/; When running each of those methods, however, I get this exceptions in hosted mode: [ERROR] [myproject] Uncaught exception escaped com.google.gwt.core.client.JavaScriptException: (ReferenceError): pageTracker is not defined [ERROR] [myproject] Uncaught exception escaped com.google.gwt.core.client.JavaScriptException: (ReferenceError): _gaq is not defined When observing site in Firebug, I see that ga.js gets loaded, but that's about it. Did anyone get Analytics working with GWT? Also, does _gaq accept page name as trackPageview parameter, since all the examples I've seen use this call: _gaq.push(['_trackPageview()']); (Of course, that also doesn't work for me.)

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• How do you unit test a LINQ query using Moq and Machine.Specifications?

  - by Phil.Wheeler

  I'm struggling to get my head around how to accommodate a mocked repository's method that only accepts a Linq expression as its argument. Specifically, the repository has a First() method that looks like this: public T First(Expression<Func<T, bool>> expression) { return All().Where(expression).FirstOrDefault(); } The difficulty I'm encountering is with my MSpec tests, where I'm (probably incorrectly) trying to mock that call: public abstract class with_userprofile_repository { protected static Mock<IRepository<UserProfile>> repository; Establish context = () => { repository = new Mock<IRepository<UserProfile>>(); repository.Setup<UserProfile>(x => x.First(up => up.OpenID == @"http://testuser.myopenid.com")).Returns(GetDummyUser()); }; protected static UserProfile GetDummyUser() { UserProfile p = new UserProfile(); p.OpenID = @"http://testuser.myopenid.com"; p.FirstName = "Joe"; p.LastLogin = DateTime.Now.Date.AddDays(-7); p.LastName = "Bloggs"; p.Email = "[email protected]"; return p; } } I run into trouble because it's not enjoying the Linq expression: System.NotSupportedException: Expression up = (up.OpenID = "http://testuser.myopenid.com") is not supported. So how does one test these sorts of scenarios?

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• iPod/iPhone OpenGL ES UIView flashes when updating

  - by Dave Viner

  I have a simple iPhone application which uses OpenGL ES (v1) to draw a line based on the touches of the user. In the XCode Simulator, the code works perfectly. However, when I install the app onto an iPod or iPhone, the OpenGL ES view "flashes" when drawing the line. If I disable the line drawing, the flash disappears. By "flash", I mean that the background image (which is an OpenGL texture) disappears momentarily, and then reappears. It appears as if the entire scene is completely erased and redrawn. The code which handles the line drawing is the following: renderLineFromPoint:(CGPoint)start toPoint:(CGPoint)end { static GLfloat* vertexBuffer = NULL; static NSUInteger vertexMax = 64; NSUInteger vertexCount = 0, count, i; //Allocate vertex array buffer if(vertexBuffer == NULL) vertexBuffer = malloc(vertexMax * 2 * sizeof(GLfloat)); //Add points to the buffer so there are drawing points every X pixels count = MAX(ceilf(sqrtf((end.x - start.x) * (end.x - start.x) + (end.y - start.y) * (end.y - start.y)) / kBrushPixelStep), 1); for(i = 0; i < count; ++i) { if(vertexCount == vertexMax) { vertexMax = 2 * vertexMax; vertexBuffer = realloc(vertexBuffer, vertexMax * 2 * sizeof(GLfloat)); } vertexBuffer[2 * vertexCount + 0] = start.x + (end.x - start.x) * ((GLfloat)i / (GLfloat)count); vertexBuffer[2 * vertexCount + 1] = start.y + (end.y - start.y) * ((GLfloat)i / (GLfloat)count); vertexCount += 1; } //Render the vertex array glVertexPointer(2, GL_FLOAT, 0, vertexBuffer); glDrawArrays(GL_POINTS, 0, vertexCount); //Display the buffer [context presentRenderbuffer:GL_RENDERBUFFER_OES]; } (This function is based on the function of the same name from the GLPaint sample application.) For the life of me, I can not figure out why this causes the screen to flash. The line is drawn properly (both in the Simulator and in the iPod). But, the flash makes it unusable. Anyone have ideas on how to prevent the "flash"?

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• Why does this silverlight code get a "catastrophic failure" when reading a BitmapImage out of Isolat

  - by Edward Tanguay

  In a Silverlight app, I save a Bitmap like this: public static void SaveBitmapImageToIsolatedStorageFile(OpenReadCompletedEventArgs e, string fileName) { using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication()) { using (IsolatedStorageFileStream isfs = new IsolatedStorageFileStream(fileName, FileMode.Create, isf)) { Int64 imgLen = (Int64)e.Result.Length; byte[] b = new byte[imgLen]; e.Result.Read(b, 0, b.Length); isfs.Write(b, 0, b.Length); isfs.Flush(); isfs.Close(); isf.Dispose(); } } } and read it back out like this: public static BitmapImage LoadBitmapImageFromIsolatedStorageFile(string fileName) { string text = String.Empty; using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication()) { if (!isf.FileExists(fileName)) return null; using (IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication()) { using (IsolatedStorageFileStream isoStream = isoStore.OpenFile(fileName, FileMode.Open)) { BitmapImage bitmapImage = new BitmapImage(); bitmapImage.SetSource(isoStream); return bitmapImage; // "Catastrophic Failure: HRESULT: 0x8000FFFF (E_UNEXPECTED))" } } } } but this always gives me a "Catastrophic Failure: HRESULT: 0x8000FFFF (E_UNEXPECTED))" error. I've seen this error before when I tried to read a png file* off a server which was actually a **text file, so I assume the Bitmap is not being saved correctly, I got the code here. Can anyone see how the BitmapImage is not being saved correctly? Or why it would be giving me this error?

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• Generated signed X.509 client certificate is invalid (no certificate chain to its CA)

  - by Genady

  I use Bouncy Castle for generation of X.509 client certificates and sing them using a known CA. First I read the CA certificate from the certificate store, generate the client certificate, sign it using the CA. Validation of the certificate is failed doe to the following issue A certificate chain could not be built to a trusted root authority. As I understand this is due to the certificate not being related to the CA. Here is a code sample: public static X509Certificate2 GenerateCertificate(X509Certificate2 caCert, string certSubjectName) { // Generate Certificate var cerKp = kpgen.GenerateKeyPair(); var certName = new X509Name(true,certSubjectName); // subjectName = user var serialNo = BigInteger.ProbablePrime(120, new Random()); X509V3CertificateGenerator gen2 = new X509V3CertificateGenerator(); gen2.SetSerialNumber(serialNo); gen2.SetSubjectDN(certName); gen2.SetIssuerDN(new X509Name(true,caCert.Subject)); gen2.SetNotAfter(DateTime.Now.AddDays(100)); gen2.SetNotBefore(DateTime.Now.Subtract(new TimeSpan(7, 0, 0, 0))); gen2.SetSignatureAlgorithm("SHA1WithRSA"); gen2.SetPublicKey(cerKp.Public); AsymmetricCipherKeyPair akp = DotNetUtilities.GetKeyPair(caCert.PrivateKey); Org.BouncyCastle.X509.X509Certificate newCert = gen2.Generate(caKp.Private); // used for getting a private key X509Certificate2 userCert = ConvertToWindows(newCert,cerKp); if (caCert22.Verify()) // works well for CA { if (userCert.Verify()) // fails for client certificate { return userCert; } } return null; } private static X509Certificate2 ConvertToWindows(Org.BouncyCastle.X509.X509Certificate newCert, AsymmetricCipherKeyPair kp) { string tempStorePwd = "abcd1234"; var tempStoreFile = new FileInfo(Path.GetTempFileName()); try { // store key { var newStore = new Pkcs12Store(); var certEntry = new X509CertificateEntry(newCert); newStore.SetCertificateEntry( newCert.SubjectDN.ToString(), certEntry ); newStore.SetKeyEntry( newCert.SubjectDN.ToString(), new AsymmetricKeyEntry(kp.Private), new[] { certEntry } ); using (var s = tempStoreFile.Create()) { newStore.Save( s, tempStorePwd.ToCharArray(), new SecureRandom(new CryptoApiRandomGenerator()) ); } } // reload key return new X509Certificate2(tempStoreFile.FullName, tempStorePwd); } finally { tempStoreFile.Delete(); } }

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• Eigenvector computation using OpenCV

  - by Andriyev

  Hi I have this matrix A, representing similarities of pixel intensities of an image. For example: Consider a 10 x 10 image. Matrix A in this case would be of dimension 100 x 100, and element A(i,j) would have a value in the range 0 to 1, representing the similarity of pixel i to j in terms of intensity. I am using OpenCV for image processing and the development environment is C on Linux. Objective is to compute the Eigenvectors of matrix A and I have used the following approach: static CvMat mat, *eigenVec, *eigenVal; static double A[100][100]={}, Ain1D[10000]={}; int cnt=0; //Converting matrix A into a one dimensional array //Reason: That is how cvMat requires it for(i = 0;i < affnDim;i++){ for(j = 0;j < affnDim;j++){ Ain1D[cnt++] = A[i][j]; } } mat = cvMat(100, 100, CV_32FC1, Ain1D); cvEigenVV(&mat, eigenVec, eigenVal, 1e-300); for(i=0;i < 100;i++){ val1 = cvmGet(eigenVal,i,0); //Fetching Eigen Value for(j=0;j < 100;j++){ matX[i][j] = cvmGet(eigenVec,i,j); //Fetching each component of Eigenvector i } } Problem: After execution I get nearly all components of all the Eigenvectors to be zero. I tried different images and also tried populating A with random values between 0 and 1, but the same result. Few of the top eigenvalues returned look like the following: 9805401476911479666115491135488.000000 -9805401476911479666115491135488.000000 -89222871725331592641813413888.000000 89222862280598626902522986496.000000 5255391142666987110400.000000 I am now thinking on the lines of using cvSVD() which performs singular value decomposition of real floating-point matrix and might yield me the eigenvectors. But before that I thought of asking it here. Is there anything absurd in my current approach? Am I using the right API i.e. cvEigenVV() for the right input matrix (my matrix A is a floating point matrix)? cheers

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• Selenium error on Win7

  - by hawkeye

  I'm starting Selenium server with the following on a command line: java -jar selenium-server.jar Here is the code: import com.thoughtworks.selenium.*; import java.util.regex.Pattern; import org.openqa.selenium.server.SeleniumServer; import junit.framework.*; public class orkut extends SeleneseTestCase { public void setUp() throws Exception { //SeleniumServer server = new SeleniumServer(); //server.start(); setUp("https://www.google.com/", "*firefox C:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe"); } public void testOrkut() throws Exception { selenium.setTimeout("10000"); selenium.open("/accounts/ServiceLogin?service=orkut&hl=en-US&rm=false&continue=http%3A%2F%2Fwww.orkut.com%2FRedirLogin%3Fmsg%3D0&cd=IN&skipvpage=true&sendvemail=false"); selenium.type("Email", "username"); selenium.type("Passwd", "password"); selenium.click("signIn"); selenium.selectFrame("orkutFrame"); selenium.click("link=Communities"); selenium.waitForPageToLoad("10000"); } public static Test suite() { return new TestSuite(orkut.class); } public void tearDown(){ selenium.stop(); } public static void main(String args[]) { junit.textui.TestRunner.run(suite()); } } Here is the error: .E Time: 33.386 There was 1 error: 1) testOrkut(orkut)java.lang.RuntimeException: Could not start Selenium session: Failed to start new browser session: Unable to delete file C:\Users\user\AppData\Local\Temp\customProfileDir78cf02e3efca4772a71525c4a7523cac\parent.lock at com.thoughtworks.selenium.DefaultSelenium.start(DefaultSelenium.java:89) at com.thoughtworks.selenium.SeleneseTestBase.setUp(SeleneseTestBase.java:123) at com.thoughtworks.selenium.SeleneseTestBase.setUp(SeleneseTestBase.java:104) at com.thoughtworks.selenium.SeleneseTestCase.setUp(SeleneseTestCase.java:78) at orkut.setUp(orkut.java:14) at com.thoughtworks.selenium.SeleneseTestCase.runBare(SeleneseTestCase.java:212) at orkut.main(orkut.java:37) Caused by: com.thoughtworks.selenium.SeleniumException: Failed to start new browser session: Unable to delete file C:\Users\M022534\AppData\Local\Temp\customProfileDir78cf02e3efca4772a71525c4a7523cac\parent.lock at com.thoughtworks.selenium.HttpCommandProcessor.throwAssertionFailureExceptionOrError(HttpCommandProcessor.java:97) at com.thoughtworks.selenium.HttpCommandProcessor.doCommand(HttpCommandProcessor.java:91) at com.thoughtworks.selenium.HttpCommandProcessor.getString(HttpCommandProcessor.java:262) at com.thoughtworks.selenium.HttpCommandProcessor.start(HttpCommandProcessor.java:223) at com.thoughtworks.selenium.DefaultSelenium.start(DefaultSelenium.java:81) ... 16 more FAILURES!!! Tests run: 1, Failures: 0, Errors: 1

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• Creating ViewResults outside of Controllers in ASP.NET MVC

  - by Craig Walker

  Several of my controller actions have a standard set of failure-handling behavior. In general, I want to: Load an object based on the Route Data (IDs and the like) If the Route Data does not point to a valid object (ex: through URL hacking) then inform the user of the problem and return an HTTP 404 Not Found Validate that the current user has the proper permissions on the object If the user doesn't have permission, inform the user of the problem and return an HTTP 403 Forbidden If the above is successful, then do something with that object that's action-specific (ie: render it in a view). These steps are so standardized that I want to have reusable code to implement the behavior. My current plan of attack was to have a helper method to do something like this: public static ActionResult HandleMyObject(this Controller controller, Func<MyObject,ActionResult> onSuccess) { var myObject = MyObject.LoadFrom(controller.RouteData). if ( myObject == null ) return NotFound(controller); if ( myObject.IsNotAllowed(controller.User)) return NotAllowed(controller); return onSuccess(myObject); } # NotAllowed() is pretty much the same as this public static NotFound(Controller controller){ controller.HttpContext.Response.StatusCode = 404 # NotFound.aspx is a shared view. ViewResult result = controller.View("NotFound"); return result; } The problem here is that Controller.View() is a protected method and so is not accessible from a helper. I've looked at creating a new ViewResult instance explicitly, but there's enough properties to set that I'm wary about doing so without knowing the pitfalls first. What's the best way to create a ViewResult from outside a particular Controller?

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• Windows 7 KSOD On Login

  - by Brandon Bertelsen

  For those that are unaware, KSOD means blacK Screen of Death. Essentially, when windows starts my computer shows only the cursor and a black screen. It seems like any and all shell elements are disabled (or perhaps not started). I have seen a number of these questions asked, none of which have matched my situation. CTRL + ALT + ... does not respond Restarting in safe mode, results in the same KSOD sfc /scannow seems to have no effect when typed at the command prompt that is accessed using the recovery tools via the install disk Update to item 3: sfc /scannow reports: There is a system repair pending which requires reboot to complete. Restart Windows and run sfc again. However, Windows does not restart past KSOD. Update to item 3 as per Soandos comment re: /offbootdir sfc /scannow /offbotdir=e:\ /windir=e:\windows "Windows resource protection found corrupt files but was unable to fix some of them. Details are included in the CBS.log..."

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• TMG Forefront Proxy blocking internal HTTP requests

  - by Pascal

  I have TMG Forefront with Proxy installed and configured. However, whenever I make internal HTTP requested to servers on the internal network with a fully qualified dns name, the proxy denies the connection. Denied Connection FRW-02 18/03/2011 20:06:37 Log type: Web Proxy (Forward) Status: 12202 Forefront TMG denied the specified Uniform Resource Locator (URL). Rule: Default rule Source: Internal (10.50.75.21:21492) Destination: Internal (10.50.75.10:8080) Request: GET http://app-01.mydomain.com.br:9871/internalwebserver_deploy/MyServiceService.svc?wsdl Filter information: Req ID: 0a157279; Compression: client=No, server=No, compress rate=0% decompress rate=0% Protocol: http User: anonymous How can I get around this block? This is an internal call, so it should block it. If I use only http://app-01:9871/internalwebserver_deploy/MyServiceService.svc?wsdl, without the domain after the server name, then it doesn't get blocked. 10.50.75.10 is the firewall's ip, and the internal network's gateway.

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• UNR Installation: Partitioning Error

  - by Wesley

  Hi all, I have a Samsung N120 netbook (with upgraded 2GB RAM). I'm trying to install Ubuntu Netbook Remix, but when I set my partitions, I get an error. The setup I want right now is: Recovery Partition - 6 GB Windows XP Home Partition - 40 GB General Partition - remaining space UNR Partition - 40 GB I am told that I need to resize a partition and it will take a while. However, when it nearly starts, I get an ERROR!!! dialog that says, "Error informing the kernel about modifications to partition /dev/sda5 - Device or resource busy. This means Linux won't know about any changes you made to /dev/sda5 so you shouldn't mount it or use it in any way before rebooting." I'm not too sure what I should do right now... any ideas? Thanks in advance.

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• Unauthorized access error to html pages in IIS 7.0

  - by George2

  Hello everyone, I am using VSTS 2008 + C# + .Net 3.5 + IIS 7.0. I have created a new web site and put an html file into the directory. And when I use browse function in IIS manager to browse the html file, I met with the following error, any ideas what is wrong? BTW: I am very confused about unauthorized error since I run the worker process under administrator account. From the error message, I am confused why the logon method is anonymous and not using administrator account? HTTP Error 401.3 - Unauthorized You do not have permission to view this directory or page because of the access control list (ACL) configuration or encryption settings for this resource on the Web server. Module IIS Web Core Notification AuthenticateRequest Handler StaticFile Error Code 0x80070005 Requested URL http://localhost:80/a.html Physical Path C:\test\simplehosttest\a.html Logon Method Anonymous Logon User Anonymous thanks in advance, George

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• Windows 8.1 Enterprise Sysprep Error

  - by Anurag Shetti

  I am Trying to sysprep my WIndows 8.1 enterprise (MSDN) and i get the following errors I have upgraded the Windows 8 to windows 8.1 and the machine contains all the configuration for VS 2012 and rest Exact error Sysprep was not able to validate your windows installation Error msg line in log C:\Users\André>err 0x8007139f # as an HRESULT: Severity: FAILURE (1), FACILITY_WIN32 (0x7), Code 0x139f # for hex 0x139f / decimal 5023 ERROR_INVALID_STATE winerror.h # The group or resource is not in the correct state to # perform the requested operation. # 1 matches found for "0x8007139f" SYSPRP ActionPlatform::GetValue: Error from RegQueryValueEx on value SysprepMode under key HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Setup\Sysprep; dwRet = 0x2 I have searched the HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Setup\Sysprep But i coud'nt find anything for SYSprep mode The value for sysprep was (Value not set)

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