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• Single ipv6 from /64 subnet

  - by PartyPete

  I have a newb question I'd like to ask. We have an dedicated server and we got an ipv6 /64 block. We want to use squid to make proxy and use those IP. And my question now is: Is it possible to use only one IP out of range? for example: let's say I have a range of IPs ffff:ffff::/64, and want to use only one address from it: ffff:ffff::1/128 or ffff:ffff::2/128 but whenever I set squid like this I always get from 'what is my ip' services whole subnet which is again ffff:ffff::. What I want to achieve is to get from those 'what is my ip' services to send me back IP ffff:ffff::1 (or 2 for that matter) Am I doing something wrong?

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• What design pattern (in python) to use for properly seperate runtime infos with core code?

  - by user1824372

  I am not sure if this is a clear question. I work on a python project that is based on terminal(console), for which I am planning to implement a GUI. I am not major in CS so I really have no idea about how to effectively design a message system such that: in console, it provide nice look info when runtime. in GUI, it is directed to a certain widget, let's say, a text label, or a bottom bar, or a hide-able frame. Do you have any suggestions? Currently, I am using print function to provide essential informations on stdout during runtime. So a lot of print .... are distributed here and there among the code. I am thinking to use macro-like variables such as 'FILE_NOT_EXTIS_MESSAGE' for printing, and define the variables in one file. Is this a standard way that people always do? How about I introduce a logging system? In sum, I am ask for a pattern that people are commonly using for handling of screen output information with high effectiveness and adaptivity.

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• Can using div with width = 0px affect SEO? [closed]

  - by user989084

  Possible Duplicate: Does google always downrank pages with hidden texts Right now I'm working on my new website and I'm really concerned about SEO since the old version of my site(which is from a script that is unusable now) has PR of 4 and I want to lose it So here is my question There is a panel that has 4 tabs Each tabs has tag which has a href like "/box-page/tab/2" and when javascript is not activated it will go this page and shows the corresponding tab and if it's activated it will just make a simple animation to show the other tab There are four boxes(and for tabs) and since I needed to fix the height of the panel I had to use width: 0 for the rest of tabs to keep the height of the box the same as the longest one and inside these boxes(which have width: 0) there are some information that can be indexed by google So as you know google doesn't have javascript and it will go to /box-page/tab/2 and /box-page/tab/3 and ... in all of these pages the information is the same but with different box showing up in the page So here is my question Does google penalize using a div with width: 0px? And if not does it just ignore the content of the div with width 0?(Which is perfect for me ^^) Thanks

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• Format text to 5 chars from a number

  - by Wheelersg

  In Access, I used a query to sum some numbers and appended the answer to another table(table2). Now I need to export the number as a text with 5 positions but can't seem to get it to hard code all 5 positions. I have it formatted as text, field length 5, custom foramt "00000" (also tried @@@@@). Example: 3 + 3 + 1 = 7. THen append the 7 to table2. It always shows as 7. I need it to shows as 00007.

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• Can I wake up PC/laptop on remote printing request?

  - by dzieciou

  I have an old Epson printer that does not have network adapter, only a USB socket. I have also a computer with network card. I could combine them to put this printer in my local network, but then I would need to keep the computer always up and running. That's definitely not economic. Is there a way to wake up computer when printing request arrives? Something like Wake-on-LAN? Or I am forced to use additional hardware?

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• How do I have an arrow follow different height parabolas depending on how long the player holds down a key?

  - by Moondustt

  i'm trying to throw an arrow in my game, but i'm having a hard time trying to realize how to make a good parabola. What I need: The more you hold "enter" stronger the arrow goes. The arrow angle will be always the same, 45 degrees. This is what I have already have: private float velocityHeld = 1f; protected override void Update(GameTime gameTime) { private void GetKeyboardEvent() { if (Keyboard.GetState().IsKeyDown(Keys.Enter) && !released) { timeHeld += velocityHeld; holding = true; } else { if (holding) { released = true; holding = false; lastTimeHeld = timeHeld; } } } if (released && timeHeld > 0) { float alpha = MathHelper.ToRadians(45f); double vy = timeHeld * Math.Sin(alpha); double vx = timeHeld * Math.Cos(alpha); ShadowPosition.Y -= (int)vy; ShadowPosition.X += (int)vx; timeHeld -= velocityHeld; } else { released = false; } } My question is, what do I need to do to make the arrow to go bottom as it loses velocity (timeHeld) to make a perfect parabola?

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• Slow data transfer using SSH

  - by Floste

  The server is an ubuntu server 11.04 with sshd. SSH works fine for console programs. But data transfer is slow, which is very annoying when transferring large files. I tried two different client programs and changed the port, but the speed is always the same. I know the server can transfer data a lot faster over SSL, which afaik uses AES. I configured my SSH client to use AES, too, but no effect. Why is using SSH multiple times slower than SSL and is there a way to improve transfer speed of SSH?

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• Unable to load directory when using jar [on hold]

  - by user1630359

  I've a directory in my eclipse project, in build path which contains files (txt). Now, when i run the application from eclipse, i can read the files (using #1 below). but, when i export my application to jar and run it from other pc i can't read the files or even check whether the directory exist or not. All the below lines are always return NULL! 1. File dir = new File("files"); 2. File dir = this.getClass().getResourceAsStream("files"); 3. File dir = this.getClass().getClassLoader().getResource("files"); any assistance will be appreciated! Thanks!

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• How to use QSerialDevice in Qt?

  - by Tobias

  Hello, I am trying to use QSerialDevice in Qt to get a connection to my serial port. I also tried QextSerialPort before (which works on Windows Vista but unfortunately not on Windows XP ..) but I need an API which supports XP, Vista and Win7... I build the library and configured it this way: CONFIG += dll CONFIG += debug I did use the current version from SVN (0.2.0 - 2010-04-05) and the 0.2.0 zip package. After building the library I did copy it to my Qt Libdir (C:\Qt\2009.05\qt\lib) and also to C:\Windows\system32. Now I try to link against the lib in my project file: LIBS += -lqserialdevice I import the needed header (abstractserial.h) and use my own AbstractSerial like this: // Initialize this->serialPort->setDeviceName("COM1"); if (!this->serialPort->open(QIODevice::ReadWrite | QIODevice::Unbuffered)) qWarning() << "Error" << this->serialPort->errorString(); // Configure SerialPort this->serialPort->setBaudRate(AbstractSerial::BaudRate4800); this->serialPort->setDataBits(AbstractSerial::DataBits8); this->serialPort->setFlowControl(AbstractSerial::FlowControlOff); this->serialPort->setParity(AbstractSerial::ParityNone); this->serialPort->setStopBits(AbstractSerial::StopBits1); The problem is, that if I run my application, it crashes immediately with exit code -1073741515 (application failed to initialize properly). This is the same error I got using QextSerialPort under Windows XP (it worked with Windows Vista). If I build the QSerialDevice lib with release config and also my program, it crashes immediately but with exit code -1073741819 Can someone help me with this program or with another solution of getting a serial port to work with Qt (maybe another API or something?) Otherwise I have to use Windows API functions which would mean that my program won't work with UNIX systems.. If you have a solution for the problem with QextSerialPort under WinXP SP3, they are also welcome ;) Best Regards, Tobias

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• bulk insert and update with ADO.NET Entity Framework

  - by Keith Barrows

  I am writing a small application that does a lot of feed processing. I want to use LINQ EF for this as speed is not an issue, it is a single user app and, in the end, will only be used once a month. My questions revolves around the best way to do bulk inserts using LINQ EF. After parsing the incoming data stream I end up with a List of values. Since the end user may end up trying to import some duplicate data I would like to "clean" the data during insert rather than reading all the records, doing a for loop, rejecting records, then finally importing the remainder. This is what I am currently doing: DateTime minDate = dataTransferObject.Min(c => c.DoorOpen); DateTime maxDate = dataTransferObject.Max(c => c.DoorOpen); using (LabUseEntities myEntities = new LabUseEntities()) { var recCheck = myEntities.ImportDoorAccess.Where(a => a.DoorOpen >= minDate && a.DoorOpen <= maxDate).ToList(); if (recCheck.Count > 0) { foreach (ImportDoorAccess ida in recCheck) { DoorAudit da = dataTransferObject.Where(a => a.DoorOpen == ida.DoorOpen && a.CardNumber == ida.CardNumber).First(); if (da != null) da.DoInsert = false; } } ImportDoorAccess newIDA; foreach (DoorAudit newDoorAudit in dataTransferObject) { if (newDoorAudit.DoInsert) { newIDA = new ImportDoorAccess { CardNumber = newDoorAudit.CardNumber, Door = newDoorAudit.Door, DoorOpen = newDoorAudit.DoorOpen, Imported = newDoorAudit.Imported, RawData = newDoorAudit.RawData, UserName = newDoorAudit.UserName }; myEntities.AddToImportDoorAccess(newIDA); } } myEntities.SaveChanges(); } I am also getting this error: System.Data.UpdateException was unhandled Message="Unable to update the EntitySet 'ImportDoorAccess' because it has a DefiningQuery and no element exists in the element to support the current operation." Source="System.Data.SqlServerCe.Entity" What am I doing wrong? Any pointers are welcome.

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• "SignTool error: Access is denied" in TFS 2010 build process

  - by user351352

  I'm getting "SignTool Error: Access is Denied" when I attempt to sign a file. When I use an administrator cmd, all works fine. However, this process is going to be used in a TFS 2010 build process and using the InvokeProcess task with signtool gives the same access denied message as a non-administrator command prompt. More info: On a Win2008 R2 enterprise machine. User is machine admin and on the domain. The TFS Build service is also set to run as this user. Using a self signed certificate created using these instructions: How do I create a self-signed certificate for code signing on Windows? After following these instructions I have the following files: MyCA.cer MyCA.pvk MySPC.cer MySPC.pvk MySPC.pfx MyCA is in my Trusted Root Certification Authorities I imported MySPC.pfx into personal certificates, following the advice here: SignTool error: Access is denied To do the signing I'm using the thumbprint of the MySPC.pfx that was imported into the Personal section so my signtool command looks like: sign /sha1 1e9d7b5ad98552d9c58944e3f3903e6b929f4819 /t http://timestamp.verisign.com/scripts/timestamp.dll "FileName" Once again this works in Admin mode. This also works when running cmd as administrator: sign /f "C:\Code Signing Non-Release\MySPC.pfx" /t http://timestamp.verisign.com/scripts/timestamp.dll "FileName" New to code signing in general, so any help is welcome.

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• Application error: fault address 0x00012afb (Expert)

  - by Christian Almeida

  Hi, I need some "light" to get a solution. Probably there are tons of things that cause this problem, but maybe somebody could help me. Scenario: a Windows server running 24/7 a PostgreSQL database and others server applications (for processing tasks on database, etc...). There are differents servers scenarios (~30), with different hardware and windows versions (XP SP3/ WinServer, etc... all NT based). All aplications were written in Delphi7, and link to DLLs (in D7 also). After some days (sometimes a week, sometimes a couple of months), Windows begins to act strange, like not opening start menu, some buttons are missing in dialogs. And soon some applications do not open, raising a event on eventviewer: Faulting application x, version y, faulting module kernel32.dll, version 5.1.2600.5781, fault address 0x00012afb In mean while, others applications open fine, like notepad, iexplore, etc... but SOME of my applications don't, with only event log described above. But if we do not restart system, in a few days even cmd.exe stops open, (and all other applications) with same error on eventlog. I've tried to find 'what' can cause this, but with no sucess. So, and any advice will be welcome. Thanks in advance.

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• Code sign error with Xcode 3.2

  - by quux

  I had a fully working build environment before upgrading to iPhone OS 3.1 and Xcode 3.2. Now when I try to do a build, i get the following: Code Sign error: Provisioning profile 'FooApp test' specifies the Application Identifier 'no.fooapp.iphoneapp' which doesn't match the current setting 'TGECMYZ3VK.no.fooapp.iphoneapp' The problem is that Xcode somehow manages to think that the "FooApp Test" provisioning profile specifies the Application Identifier "no.fooapp.iphoneapp", but this is not the case. In the Organizer (and in the iPhone developer portal website) the app identifier is correctly seen as 'TGECMYZ3VK.no.fooapp.iphoneapp'. Also, when setting the provisioning profile in the build options at the project level, Xcode correctly identifies the app identifier, but when I go to the target, I'm unable to select any valid provisioning profile. What could be causing this problem? Update: I've tried to create a new provisioning profile, but still no luck. I also tried simply changing the app identified in Info.plist to just "no.fooapp.iphoneapp". The build succeeds, but now I get an error from the Organizer: The executable was signed with invalid entitlements. The entitlements specified in your application's Code Signing Entitlements file do not match those specified in your provisioning profile. (0xE8008016). This seems reasonable, as the provisioning profile still has the "TGECMYZ3VK.no.fooapp.iphoneapp" application identifier. I also double checked that all certiicates are valid in the Keychain. So my question is how I can get Xcode to see the correct application identifier? UPDATE: As noted below, what seems to fix the problem is deleting all provisioning profiles, certificates etc, making new certificates / profiles and installing them again. If anyone has any other solutions, they would be welcome. :)

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• WPF TextBox.SelectAll () doesn't work

  - by Zoliq

  Hi! I have used the following template in my project: <DataTemplate x:Key="textBoxDataTemplate"> <TextBox Name="textBox" ToolTip="{Binding RelativeSource={RelativeSource Self}, Path=(Validation.Errors)[0].ErrorContent}" Tag="{Binding}" PreviewKeyDown="cellValueTextBoxKeyDown"> <TextBox.Text> <MultiBinding Converter="{StaticResource intToStringMultiConverter}"> <Binding Path="CellValue" Mode="TwoWay"> <Binding.ValidationRules> <y:MatrixCellValueRule MaxValue="200" /> </Binding.ValidationRules> </Binding> <Binding RelativeSource="{RelativeSource FindAncestor, AncestorType={x:Type y:MatrixGrid}}" Path="Tag" Mode="OneWay" /> </MultiBinding> </TextBox.Text> </TextBox> </DataTemplate> I used this template to create an editable matrix for the user. The user is able to navigate from cell to cell within the matrix and I would like to highlight the data in the selected textbox but it doesn't work. I called TextBox.Focus () and TextBox.SelectAll () to achieve the effect but nothing. The Focus () works but the text never gets highlighted. Any help is welcome and appreciated.

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• AWS Amazon EC2 - password-less SSH login for non-root users using PEM keypairs

  - by Mark White

  We've got a couple of clusters running on AWS (HAProxy/Solr, PGPool/PostgreSQL) and we've setup scripts to allow new slave instances to be auto-included into the clusters by updating their IPs to config files held on S3, then SSHing to the master instance to kick them to download the revised config and restart the service. It's all working nicely, but in testing we're using our master pem for SSH which means it needs to be stored on an instance. Not good. I want a non-root user that can use an AWS keypair who will have sudo access to run the download-config-and-restart scripts, but nothing else. rbash seems to be the way to go, but I understand this can be insecure unless setup correctly. So what security holes are there in this approach: New AWS keypair created for user.pem (not really called 'user') New user on instances: user Public key for user is in ~user/.ssh/authorized_keys (taken by creating new instance with user.pem, and copying it from /root/.ssh/authorized_keys) Private key for user is in ~user/.ssh/user.pem 'user' has login shell of /home/user/bin/rbash ~user/bin/ contains symbolic links to /bin/rbash and /usr/bin/sudo /etc/sudoers has entry "user ALL=(root) NOPASSWD: ~user/.bashrc sets PATH to /home/user/bin/ only ~user/.inputrc has 'set disable-completion on' to prevent double tabbing from 'sudo /' to find paths. ~user/ -R is owned by root with read-only access to user, except for ~user/.ssh which has write access for user (for writing known_hosts), and ~user/bin/* which are +x Inter-instance communication uses 'ssh -o StrictHostKeyChecking=no -i ~user/.ssh/user.pem user@ sudo ' Any thoughts would be welcome. Mark...

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• Asp.Net MVC2 RenderAction changes page mime type?

  - by Gabe Moothart

  It appears that calling Html.RenderAction in Asp.Net MVC2 apps can alter the mime type of the page if the child action's type is different than the parent action's. The code below (testing in MVC2 RTM), which seems sensible to me, will return a result of type application/json when calling Home/Index. Instead of dispylaying the page, the browser will barf and ask you if you want to download it. My question: Am I missing something? Is this a bug? If so, what's the best workaround? controller: public class HomeController : Controller { public ActionResult Index() { ViewData[ "Message" ] = "Welcome to ASP.NET MVC!"; return View(); } [ChildActionOnly] public JsonResult States() { string[] states = new[] { "AK", "AL", "AR", "AZ", }; return Json(states, JsonRequestBehavior.AllowGet); } } view: <h2><%= Html.Encode(ViewData["Message"]) %></h2> <p> To learn more about ASP.NET MVC visit <a href="http://asp.net/mvc" title="ASP.NET MVC Website">http://asp.net/mvc</a>. </p> <script> var states = <% Html.RenderAction("States"); %>; </script>

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• Synapse and string problems with HTTPSend in Delphi 2010

  - by Mick

  I have been trying to get to the bottom of this problem off and on for the past 2 days and I'm really stuck. Hopefully some smart folks can help me out. The issue is that I have a function that I call in a thread that downloads a file (using Synapse libraries) from a website that is passed to it. However, I've found that every once in a while there are sites where it will not pull down a file, but wget or Firefox/IE will download it without issue. Digging into it, I've found some curious things. Here is the relevant code: uses //[..] HTTPSend, blcksock; //[..] type TMyThread = class(TThread) protected procedure Execute; override; private { Private declarations } fTheUrl: string; procedure GetFile(const TheUrl: string); public property thrd_TheUrl: string read fTheUrl write fTheUrl; end; implementation [..] procedure TMyThread.GetFile(const TheUrl: string); var HTTP: THTTPSend; success: boolean; sLocalUrl: string; IsSame : boolean; begin HTTP := THTTPSend.Create; try HTTP.UserAgent := 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727)'; HTTP.ProxyHost := 'MYPROXY.COM'; HTTP.ProxyPort := '80'; sLocalUrl := 'http://web.archive.org/web/20071212205017/energizer.com/usbcharger/download/UsbCharger_setup_V1_1_1.exe'; IsSame := SameText(sLocalUrl, sTheUrl); //this equals True when I debug /// /// /// THIS IS WHERE THE ISSUE BEGINS /// I will comment out 1 of the following when debugging /// HTTP.HTTPMethod('GET', sLocalUrl); // ----this works and WILL download the file HTTP.HTTPMethod('GET', sTheUrl); // --- this always fails, and HTTP.ResultString contains "Not Found" success := SysUtils.UpperCase(HTTP.ResultString) = 'OK'; if HTTP.ResultCode > 0 then success := True; //this is here just to keep the value around while debugging finally HTTP.Free; end; end; procedure TMyThread.Execute begin //fTheURL contains this value: http://web.archive.org/web/20071212205017/energizer.com/usbcharger/download/UsbCharger_setup_V1_1_1.exe GetFile(fTheUrl); end; The problem is that when I assign a local variable to the function and give it the URL directly, everything works. However, when passing the variable into the function, it fails. Anyone have any ideas? HTTP.HTTPMethod('GET', sLocalUrl); // ----this works and WILL download the file HTTP.HTTPMethod('GET', sTheUrl); // --- this always fails, and HTTP.ResultString contains "Not Found" I'm using the latest version of Synapse from their SVN repository (version from 2 days ago). NOTE: The file I am attempting to download is known to have a virus, the program I am writing is meant to download malicious files for analysis. So, don't execute the file once you download it. However, I'm using this URL b/c this is the one I can reproduce the issue with.

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• How create a Firefox-like search textbox in WPF?

  - by Simon

  Hey there. I'm writing an application in WPF using the MVVM-pattern and will really often use TextBoxes. I don't want to use labels for the user to know user what the text box is for, i.e. I don't want something like this: <TextBlock> Name: </TextBlock> <TextBox /> Instead, I would like the TextBox to contain its own label. Statically, you would express it like this: <TextBox>Name</TextBox> If the cursor is displayed in the textbox, i.e. the TextBox gains focus, I want the description text to disappear. If the TextBox is left empty and it loses the focus, the description text should be shown again. It's similar to the search textbox of StackOverflow or the one of Firefox. (please tell me if your not sure what I mean). One TextBox's label may change at runtime, dependending on e.g. a ComboBox's selected element or a value in my ViewModel. (It's like in Firefox's search TextBox, if you select google from the search engins' menu, the TextBox's label changes to "Google", if you select "Yahoo" its set to "Yahoo"). Thus I want to be able to bind the label's content. Consider that I may already have a Binding on the Text-Property of the TextBox. How can implement such a behaviour and make it reusable for any of my TextBox's? Code is welcome but not needed; a description of what to do is enough. Thank you in advance.

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• Android's EditText is hidden when the virtual keyboard is shown and a SurfaceView is involved

  - by Jan

  I have a simple user interface: an EditText should be located below a SurfaceView. I use a RelativeLayout to arrange these two views. Now, when I tap on the EditText to open the virtual keyboard the SurfaceView slides up but the EditText is hidden and does not show the typed string. To reproduce, use the following layout XML code: <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/RelativeLayout01" android:layout_height="fill_parent" android:layout_width="fill_parent"> <SurfaceView android:id="@+id/SurfaceView01" android:layout_width="fill_parent" android:layout_height="wrap_content"> </SurfaceView> <EditText android:id="@+id/EditText01" android:layout_height="wrap_content" android:layout_width="fill_parent" android:layout_alignParentLeft="true" android:layout_alignParentBottom="true" android:selectAllOnFocus="true" android:textStyle="normal" android:singleLine="true"> </EditText> </RelativeLayout> The main Activity class only needs to show the layout. When I start the program and tap the EditText, the virtual keyboard appears but the EditText field is gone. Maybe the RelativeLayout is causing the problems, but I don't know how to reproduce the same layout with another Layout class. Any suggestions are welcome, I really appreciate your help. Thanks. Edit: Here are two screenshots, one showing the EditText at the bottom without virtual keyboard, one with virtual keyboard but with no EditText. It is interesting to note that the SurfaceView and the EditText actually shift upward, the EditText just disappears. BTW this also happens to a button if it is next to the EditText. EditText below a SurfaceView (left); EditText is gone (right)

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• ASP.NET MVC 2 Mdel encapsulated within ViewModel Validation

  - by Program.X

  I am trying to get validation to work in ASP.NET MVC 2, but without much success. I have a complex class containing a large number of fields. (Don't ask - this is oneo f those real-world situations best practices can't touch) This would normally be my Model and is a LINQ-to-SQL generated class. Because this is generated code, I have created a MetaData class as per http://davidhayden.com/blog/dave/archive/2009/08/10/AspNetMvc20BuddyClassesMetadataType.aspx. public class ConsultantRegistrationMetadata { [DisplayName("Title")] [Required(ErrorMessage = "Title is required")] [StringLength(10, ErrorMessage = "Title cannot contain more than 10 characters")] string Title { get; set; } [Required(ErrorMessage = "Forename(s) is required")] [StringLength(128, ErrorMessage = "Forename(s) cannot contain more than 128 characters")] [DisplayName("Forename(s)")] string Forenames { get; set; } // ... I've attached this to the partial class of my generated class: [MetadataType(typeof(ConsultantRegistrationMetadata))] public partial class ConsultantRegistration { // ... Because my form is complex, it has a number of dependencies, such as SelectLists, etc. which I have encapsulated in a ViewModel pattern - and included the ConsultantRegistration model as a property: public class ConsultantRegistrationFormViewModel { public Data.ConsultantRegistration ConsultantRegistration { get; private set; } public SelectList Titles { get; private set; } public SelectList Countries { get; private set; } // ... So it is essentially ViewModel=Model My View then has: <p> <%: Html.LabelFor(model => model.ConsultantRegistration.Title) %> <%: Html.DropDownListFor(model => model.ConsultantRegistration.Title, Model.Titles,"(select a Title)") %> <%: Html.ValidationMessage("Title","*") %> </p> <p> <%: Html.LabelFor(model => model.ConsultantRegistration.Forenames) %> <%: Html.TextBoxFor(model => model.ConsultantRegistration.Forenames) %> <%: Html.ValidationMessageFor(model=>model.ConsultantRegistration.Forenames) %> </p> The problem is, the validation attributes on the metadata class are having no effect. I tried doing it via an Interface, but also no effect. I'm beginning to think that the reason is because I am encapsulating my model within a ViewModel. My Controller (Create Action) is as follows: [HttpPost] public ActionResult Create(Data.ConsultantRegistration consultantRegistration) { if (ModelState.IsValid) // this is always true - which is wrong!! { try { consultantRegistration = ConsultantRegistrationRepository.SaveConsultantRegistration(consultantRegistration); return RedirectToAction("Edit", new { id = consultantRegistration.ID, sectionIndex = 2 }); } catch (Exception ex) { ModelState.AddModelError("CreateException",ex); } } return View(new ConsultantRegistrationFormViewModel(consultantRegistration)); } As outlined in the comment, the ModelState.IsValid property always returns true, despite fields with the Validaiton annotations not being valid. (Forenames being a key example). Am I missing something obvious - considering I am an MVC newbie? I'm after the mechanism demoed by Jon Galloway at http://www.asp.net/learn/mvc-videos/video-10082.aspx. (Am aware t is similar to http://stackoverflow.com/questions/1260562/asp-net-mvc-model-viewmodel-validation but that post seems to talk about xVal. I have no idea what that is and suspect it is for MVC 1)

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• Handling async ASMX web service exceptions

  - by Andy

  Hi, I've developed silverlight client with makes async web services calls to a asmx web service. The problem is, I want to handle exceptions, so far as to be able to tell in the client application whether there was an exception in the webservice (and therefore will be logged local to the webservice) or whether there was a communication problem (i.e. the endpoint for the webservice was wrong). In testing both types of exceptions in my project I get the same generic exception: System.ServiceModel.CommunicationException: The remote server returned an error: NotFound. This exception is amazingly useless when an exception occured in the webservice as it clearly has been found. Is the presence of this generic error to do with security (not being allowed to see true errors)? It can't be the fact that I don't have debug strings as I'm running on a dev PC. Either way, my question is, what's the best way to handle async errors in a commercial silverlight application? Any links or ideas are most welcome! :) Thanks a lot! Andy.

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• Developer certificate vs purchased certificate for WCF

  - by RemotecUk

  I understsand that if I want to use authentication in WCF then I need to install a certificate on my server which WCF will use to encrypt data passing between my server and client. For development purposes I believe I can use the makecert.exe util. to make a development certificate. What is the worst that can happen if I use this certificate on the production environment? and... Why cant I use this certificate on the production environment? and ... What is the certificate actually going to do in this scenario? [Edit: Added another question] finally... In a scenario where the website has a certificate installed to provide HTTPS support can the same certificate be used for the WCF services as well? Note on my application: Its a NetTCP client and server service. The users will log in using the same username and password which they use for the website which is passed in clear text. I would be happy to pass the u/n + p/w in cleartext to WCF but this isnt allowed by the framework and a certificate must be in place. However, I dont want to buy an certificate due to budget constraints! (Sorry for the possibly stupid question but I really dont understand this so would welcome some help with this).

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• Server socket programming in Android 1.5, most power efficient way?

  - by Antek

  Hello people, I am doing a project where I have too develop an application that listens for incoming events by a service. The device that has to listen too events is an Android phone with Android SDK 1.5 on it. Currently the services that call events only implement communication trough UDP or TCP sockets. I can solve my problem by setting up a ServerSocket, but i doubt that's the most power efficient way. This application will be running most of the time, with Wi-Fi on, and I'd like too reach an long battery duration. I've been looking for options on the internet for my question for a while but i couldn't get a real answer. I've got the following questions: What is the most efficient way too listen to incoming events? Should I make an ServerSocket? or what are my options? Are there any other implementations that are more power efficient? Ive been also thinking of implementing communication trough XMPP. Not sure if this is the best way. I'm not forced too an specific implementation. All suggestions are welcome! Thanks for the help, Antek

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• Random MKAnnotationView is tapped when there are overlapping annotations

  - by Alexandre Gellibert

  I cannot believe this bug/problem doesn't have any solution! In my iphone application, I'm using MapKit with MKMapView and custom MKAnnotationView. The problem is when annotations overlap (in my app, annotations are photos and those photos may overlap) and when you tap on the annotation that appears on front, other annotation (on back) receives the event (seems to be random). I didn't find any way to send the event to the front annotation. Z ordering and Order of overlapping annotations questions on stackoverflow did not help me that much. Please any idea is welcome (even ugly ones)! Here's some of my code (nothing fancy, very common): CustomAnnotation.h @interface CustomAnnotation : NSObject <MKAnnotation> { @private CustomAnnotationView* view; } @property (nonatomic, retain) CustomAnnotationView* view; @end CustomAnnotation.m @implementation CustomAnnotation @synthetize view; CustomAnnotationView.h @interface CustomAnnotationView : MKAnnotationView { } @end CustomAnnotationView.m @implementation CustomAnnotationView - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{ // Do something related to the annotation tapped } @end Main class ... // Annotations are added and some of them overlaps with others. - (void)addAnnotation:(CustomAnnotation*)annotation { [map addAnnotation:annotation]; } ... - (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation { NSString* identifier = getIdentifierFromAnnotation(annotation); CustomAnnotationView* view; if(!(view = (CustomAnnotationView*)[map dequeueReusableAnnotationViewWithIdentifier:identifier])) { view = [[CustomAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier: identifier]; [(CustomAnnotation*)annotation setView:view]; [view release]; } return view; }

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• How to update a uniform variable in GLSL

  - by paj777

  Hi All, I am trying to get update the eye position in my shader from my appliaction but I keep getting error 1281 when I attempt this. I have no problems after the initialization just when i subsequently try to update the values. Here is my code: void GraphicsObject::SendShadersDDS(char vertFile [], char fragFile [], char filename []) { char *vs = NULL,*fs = NULL; vert = glCreateShader(GL_VERTEX_SHADER); frag = glCreateShader(GL_FRAGMENT_SHADER); vs = textFileRead(vertFile); fs = textFileRead(fragFile); const char * ff = fs; const char * vv = vs; glShaderSource(vert, 1, &vv, NULL); glShaderSource(frag, 1, &ff, NULL); free(vs); free(fs); glCompileShader(vert); glCompileShader(frag); program = glCreateProgram(); glAttachShader(program, frag); glAttachShader(program, vert); glLinkProgram(program); glUseProgram(program); LoadCubeTexture(filename, compressedTexture); GLint location = glGetUniformLocation(program, "tex"); glUniform1i(location, 0); glActiveTexture(GL_TEXTURE0); EyePos = glGetUniformLocation(program, "EyePosition"); glUniform4f(EyePos, EyePosition.X(),EyePosition.Y(), EyePosition.Z(), 1.0); DWORD bob = glGetError(); //All is fine here glEnable(GL_DEPTH_TEST); } And here's the function I call to update the eye position: void GraphicsObject::UpdateEyePosition(Vector3d& eyePosition){ glUniform4f(EyePos, eyePosition.X(),eyePosition.Y(), eyePosition.Z(), 1.0); DWORD bob = glGetError(); //bob equals 1281 after this call } I've tried a few ways now of updating the variable and this is the latest incarnation, thanks for viewing, all comments welcome.

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