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  • Hyper-V Deployment Options Best Practices

    - by Erv Walter
    In what circumstances would you choose each of the following deployment options: Hyper-V installed as the bare bones Windows Hyper-V Server 2008 R2 Hyper-V role installed on a Windows Server 2008 R2 Server Core installation Hyper-V role installed on a Windows Server 2008 R2 Full Installation For example, I know there are licensing considerations for each option: With Hyper-V on top of a full installation of Enterprise or Data Center edition, you can use Windows Server as a guest OS without needing additional licenses (4 for Enterprise, unlimited for Data Center) With "Windows Hyper-V Server" you have to obtain licenses for each guest OS. But my real question is, are there technical considerations as well? I understand that the Full Installation doesn't perform as well as the other two options, but is there a significant difference between Server Core and "Windows Hyper-V Server"? What are the pros and cons of Hyper-V on Server Core vs "Windows Hyper-V Server" and when would you choose each?

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  • asp.net hover menu item

    - by WtFudgE
    When I hover on a static menu item that has a dynamic menu, the hover styles are in effect but once I start navigating the dynamic menu the static menu item goes back to the non-hover styles. Does anyone know how to make them stick until I stop ''using' that menu? I tried the 'selected' static menu item styles but that doesn't work - if I use them, even when I stop navigating the menu the last selected static menu item will display the selected style - after using the menu I want the styles to revert to the normal styles....

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  • Running Selenium headless without using xvfb

    - by Paul Biggar
    I'm trying to run Selenium headless (without the browser appearing). Other questions have pointed to xvfb as the tool to do this. However, it appears highly unstable, crashing all the time, so I'm looking for another alternative. Is there a non-xvfb way of running Selenium headless?

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  • Using MVC2 to update an Entity Framework v4 object with foreign keys fails

    - by jbjon
    With the following simple relational database structure: An Order has one or more OrderItems, and each OrderItem has one OrderItemStatus. Entity Framework v4 is used to communicate with the database and entities have been generated from this schema. The Entities connection happens to be called EnumTestEntities in the example. The trimmed down version of the Order Repository class looks like this: public class OrderRepository { private EnumTestEntities entities = new EnumTestEntities(); // Query Methods public Order Get(int id) { return entities.Orders.SingleOrDefault(d => d.OrderID == id); } // Persistence public void Save() { entities.SaveChanges(); } } An MVC2 app uses Entity Framework models to drive the views. I'm using the EditorFor feature of MVC2 to drive the Edit view. When it comes to POSTing back any changes to the model, the following code is called: [HttpPost] public ActionResult Edit(int id, FormCollection formValues) { // Get the current Order out of the database by ID Order order = orderRepository.Get(id); var orderItems = order.OrderItems; try { // Update the Order from the values posted from the View UpdateModel(order, ""); // Without the ValueProvider suffix it does not attempt to update the order items UpdateModel(order.OrderItems, "OrderItems.OrderItems"); // All the Save() does is call SaveChanges() on the database context orderRepository.Save(); return RedirectToAction("Details", new { id = order.OrderID }); } catch (Exception e) { return View(order); // Inserted while debugging } } The second call to UpdateModel has a ValueProvider suffix which matches the auto-generated HTML input name prefixes that MVC2 has generated for the foreign key collection of OrderItems within the View. The call to SaveChanges() on the database context after updating the OrderItems collection of an Order using UpdateModel generates the following exception: "The operation failed: The relationship could not be changed because one or more of the foreign-key properties is non-nullable. When a change is made to a relationship, the related foreign-key property is set to a null value. If the foreign-key does not support null values, a new relationship must be defined, the foreign-key property must be assigned another non-null value, or the unrelated object must be deleted." When debugging through this code, I can still see that the EntityKeys are not null and seem to be the same value as they should be. This still happens when you are not changing any of the extracted Order details from the database. Also the entity connection to the database doesn't change between the act of Getting and the SaveChanges so it doesn't appear to be a Context issue either. Any ideas what might be causing this problem? I know EF4 has done work on foreign key properties but can anyone shed any light on how to use EF4 and MVC2 to make things easy to update; rather than having to populate each property manually. I had hoped the simplicity of EditorFor and DisplayFor would also extend to Controllers updating data. Thanks

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  • Have you ever bought a commercial implementation of a programming language for personal programming

    - by Nelson
    Commercial products are often a source of ideas and inspiration for open source projects. There are free and open source implementations of almost every programming language ever devised, and a lot of them are very good. For non-work related personal programming projects, have you ever bought an expensive commerical implementation of a programming language and found it well worth the investment? If so, which one and why?

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  • Ghost application error

    - by yaar zeigerman
    Back story for better understanding: I have a ghost made by someone else and toady some one I worked with made a new ghost in the same folder with the regular ghost I work with. I am trying to run the ghost now but get a 1808: Ghost Decompression Error and after aborting I get this message "Application Error 19225: Ghost has detected corruption in the image file. Please perform an integrity check on the image. If this problem persists, contact Symantec Technical Support at http://service.symantec.com" I would like to now if him making a new ghost could have ruined the old ghost and if not where did my problem come from and how do I fix it ?

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  • UIPopoverController. Is there way to use Interface Builder to layout the VC and View it Contains?

    - by dugla
    Since UIPopoverController is often a container for a non-trivial amount of view hierarchy, it would be nice to do the layout of the VC and View it contains in Interface Builder rather then programmatically. Has anyone found a good work flow for do this? For example I want to embed a UIScrollView in a UIPopoverController and I am not excited about having to do it all programmatically. Thanks in advance. Cheers, Doug

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  • Good .net4 profiler

    - by Martin
    What is a good profiler for .NET 4.0? I'm willing to spend some money, but not too much (say up to £50) I'm developing games for windows phone and xbox using XNA, which means that the projects are commercial. I mention it because I've seen several which are free for non commercial use. Extra points for Visual studio integration. Nb. I'm using Visual Studio Professional 2010

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  • SysAdmin Career Question: Internal or Client Based

    - by Malnizzle
    ServerFault Community, It seems there are two positions SysAdmins find themselves in, either you are working for a non-IT services based single client (your employer) and providing in-house IT support or you work for a company who provides out sourced IT services to multiple clients. Right now I work for a company who does the latter, and I often consider how nice it would be doing the in-house side of things, to just have one network I am focused on and instead of feeling like I have a dozen bosses between clients and internal management, I would just have one set of management and people to appease. There is also the technical aspect of every client wanting something different, and having to manage numerous different technology platforms, or trying to force clients into using the technologies we prefer, neither situation is enjoyable. Is this just "the grass is greener on the other side" syndrome, or is there some legitimacy to the the stress of client based IT work compared to being an in-house IT guy? Thanks!

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  • Looking for a manual/how-to for installing a Canon iRunner 210s network printer

    - by Ssvarc
    A client has a Canon iRunner210S and is complaining about slow print speeds. I've searched for a install manual online but came up empty. A call to Canon technical referred me to their dealer network for service, as as informing me that there isn't a manual available on their website. Anyone know how to install these and/or have a link to a manual? The current setup has the printers on a LAN Manager printer port instead of on straight IP ports. Is this normal for this printer? And what exactly are Lan Manager ports (based on my research, they appear to be a way to authenticate a connection)?

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  • What Parallel computing APIs make good use of sockets?

    - by Ole Jak
    My program uses sockets, what Parallel computing APIs could I use that would help me without obligating me to go from sockets to anything else? When we are on a cluster with a special, non-socket infrastructure system this API would emulate something like sockets but using that infrastructure (so programs perform much faster than on sockets, but still use the sockets API).

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  • How to install a Canon iRunner 210s

    - by Ssvarc
    A client has a Canon iRunner210S and is complaining about slow print speeds. I've searched for a install manual online but came up empty. A call to Canon technical referred me to their dealer network for service, as as informing me that there isn't a manual available on their website. Anyone know how to install these and/or have a link to a manual? The current setup has the printers on a LAN Manager printer port instead of on straight IP ports. Is this normal for this printer? And what exactly are Lan Manager ports (based on my research, they appear to be a way to authenticate a connection)?

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  • Linux: setting up an elite/high-anonimity Web proxy on a dedicated server

    - by YellowSquirrel
    I'm renting a dedicated server which I'd like to use to "surf the Web": basically I want to always surf the Web from the same static IP (the one of my dedicated server). I can do it by running Xvnc/FreeNX on the dedicated server, but this is kinda slow and clumsy (I tried it). What are the steps needed to install an "elite/high-anonimity" Web proxy on a dedicated (Debian) Linux server knowing that my two requirements are: I'm the only person that needs access to the proxy all I want is that my broadband (dynamic) IP is completely hidden (I want to always surf from my dedicated server's IP). Note that using the static IP people can find my domains and my real name and I'm perfectly fine with that (actually it is what I want). What I don't want is people knowing from which dynamic IP (broadband) I'm connecting. What are the steps needed to do that? (basically I don't care about "anonimity", what I want is to appear to surf from a static IP and I think I need what is called an "elite" Web proxy to do that, but I'm not sure) Technical infos and sample configuration most welcome :)

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  • Focusable EditText inside ListView

    - by Joe
    I've spent about 6 hours on this so far, and been hitting nothing but roadblocks. The general premise is that there is some row in a ListView (whether it's generated by the adapter, or added as a header view) that contains an EditText widget and a Button. All I want to do is be able to use the jogball/arrows, to navigate the selector to individual items like normal, but when I get to a particular row -- even if I have to explicitly identify the row -- that has a focusable child, I want that child to take focus instead of indicating the position with the selector. I've tried many possibilities, and have so far had no luck. layout: <ListView android:id="@android:id/list" android:layout_height="fill_parent" android:layout_width="fill_parent" /> Header view: EditText view = new EditText(this); listView.addHeaderView(view, null, true); Assuming there are other items in the adapter, using the arrow keys will move the selection up/down in the list, as expected; but when getting to the header row, it is also displayed with the selector, and no way to focus into the EditText using the jogball. Note: tapping on the EditText will focus it at that point, however that relies on a touchscreen, which should not be a requirement. ListView apparently has two modes in this regard: 1. setItemsCanFocus(true): selector is never displayed, but the EditText can get focus when using the arrows. Focus search algorithm is hard to predict, and no visual feedback (on any rows: having focusable children or not) on which item is selected, both of which can give the user an unexpected experience. 2. setItemsCanFocus(false): selector is always drawn in non-touch-mode, and EditText can never get focus -- even if you tap on it. To make matters worse, calling editTextView.requestFocus() returns true, but in fact does not give the EditText focus. What I'm envisioning is basically a hybrid of 1 & 2, where rather than the list setting if all items are focusable or not, I want to set focusability for a single item in the list, so that the selector seamlessly transitions from selecting the entire row for non-focusable items, and traversing the focus tree for items that contain focusable children. Any takers?

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  • Windows Workflow Foundation 4 (WF4) ReHosting

    - by Russ Clark
    I've been looking at the possibility of ReHosting a WF4 Workflow to be used to debug running Workflows. All the posts and samples I've seen regarding WF4 Rehosting are using a WPF application to initially Host the Workflow, and then use the WorkflowDesigner in ReHosting it. Is there any way to Rehost a Workflow that was hosted in a non WPF application, like ASP.Net MVC?

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  • Mac font rendering on Windows

    - by Swap
    Hi, I love the way Mac OS beautifully renders fonts (not just browsers). I was wondering if we could somehow get the same rendering in browsers running on Windows? Someone recommended sIFR but I guess that's useful when I need to use non-standard fonts? -- Swap

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  • Software to Monitor the Stability of Internet Connection

    - by Ngu Soon Hui
    Thanks to the excellent internet connection service offered by one of the best ISP in the world, the internet connection in my area is very, very unstable. I can connect some of the time, but MOST of the time the connection will just drop off ( with the error message unable to resolve host) and after a few minutes, it will resume back. If I ping the domain name directly (i.e., ping www.google.com -t in cmd command), I will get a cannot ping message. Because of the flickery nature of the connection, it's pretty hard to prove to the support staff that internet connection is unstable. So I am thinking about using one software to record down the connection situation, so that I can present to the technical staff and make sure that they have no excuse not to fix my problem. Any such software available? Edit: Of course, such software should not record my browsing habit, and must be able to monitor and record the internet connection condition even when I am not online.

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  • Exchange 2010 to Exchange 2010 Public Folder Replication

    - by Archit Baweja
    We have 2 exchange servers in our org. MX1 and MX2. I'm trying to replicate all MX1 public folders to MX2. I've setup replication for all the toplevel folders to include the MX2 server. However no public folders are being replicated. The event log does not show any errors. I've set the diagnostic level for all public folder diagnostics to Highest using get-eventloglevel "MSExchangeIS\9001 Public\*" | set-eventloglevel -Level Expert However besides a 3092 event ID (type: 0x2) generated on MX1 (the source server), there are no events being generated that would notify me of any issues. Some technical details. MX1 is Windows 2008 Standard, MX2 is Windows 2008 Enterprise (eval mode right now).

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  • Font Family Selection With Google Charts?

    - by mazniak
    Is it possible to set font-family for any of the non-flash Google chart visualizations? Specifically for things like the text on the chart axis. Google charts is powerful, but ugly. And unfortunately I can’t move to something nicer, like gRaphael.

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  • Applescript studio - how do I get every control in a window

    - by stib
    I'm trying to enable or disable all the control in a window as the programme changes from interactive to non-interactive mode. How can I ask a window to give me all its contents? every control of window "mainWindow" doesn't work, nor does contents of window "mainWindow" Actually, I haven't been able to find any good documentation for interacting with menu items from interface builder at all. Things like how to set the contents of popups, and buttons and so on. thanks

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  • Why does Ubuntu's Nautilus display a folder called "Examples" while the console displays "examples.desktop"

    - by broiyan
    These folders occur at /home/username. How does this name discrepancy arise? (Uppercase E versus lowercase e.) It seems to be a shortcut to /usr/share/example-content. How can I delete /usr/share/example-content/Ubuntu_Free_Culture_Showcase without using the command line? One possible answer is to make a privileged Nautilus using something like these SUSE instructions (link below). Unfortunately "gnomesu nautilus" gives me a "gnomesu: no such file" message and "sudo nautilus" does not do anything when added to the properties of the Launcher. Update: "sudo nautilus" from the console let's me delete but there is a mess of error messages. http://forums.opensuse.org/english/get-technical-help-here/how-faq-forums/unreviewed-how-faq/426153-how-nautilus-super-user-mode-gnome.html

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  • realtime logging

    - by Ion Todirel
    I have an application which has a loop, part of a "Scheduler", which runs at all time and is the heart of the application. Pretty much like a game loop, just that my application is a WPF application and it's not a game. Naturally the application does logging at many points, but the Scheduler does some sensitive monitoring, and sometimes it's impossible just from the logs to tell what may have gotten wrong (and by wrong I don't mean exceptions) or the current status. Because Scheduler's inner loop runs at short intervals, you can't do file I/O-based logging (or using the Event Viewer) in there. First, you need to watch it in real-time, and secondly the log file would grow in size very fast. So I was thinking of ways to show this data to the user in the realtime, some things I considered: Display the data in realtime in the UI Use AllocConsole/WriteConsole to display this information in a console Use a different console application which would display this information, communicate between the Scheduler and the console app using pipes or other IPC techniques Use Windows' Performance Monitor and somehow feed it with this information ETW Displaying in the UI would have its issues. First it doesn't integrate with the UI I had in mind for my application, and I don't want to complicate the UI just for this. This diagnostics would only happen rarely. Secondly, there is going to be some non-trivial data protection, as the Scheduler has it's own thread. A separate console window would work probably, but I'm still worried if it's not too much threshold. Allocating my own console, as this is a windows app, would probably be better than a different console application (3), as I don't need to worry about IPC communication, and non-blocking communication. However a user could close the console I allocated, and it would be problematic in that case. With a separate process you don't have to worry about it. Assuming there is an API for Performance Monitor, it wouldn't be integrated too well with my app or apparent to the users. Using ETW also doesn't solve anything, just a random idea, I still need to display this information somehow. What others think, would there be other ways I missed?

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  • Pseudo LRU tree algorithm.

    - by patros
    A lot of descriptions of Pseudo LRU algorithms involve using a binary search tree, and setting flags to "point away" from the node you're searching for every time you access the tree. This leads to a reasonable approximation of LRU. However, it seems from the descriptions that all of the nodes deemed LRU would be leaf nodes. Is there a pseudo-LRU algorithm that deals with a static tree that will still perform reasonably well, while determining that non-leaf nodes are suitable LRU candidates?

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  • Remote Desktop closes with Fatal Error (Error Code: 5)

    - by Swinders
    We have one PC (Windows XP SP3) that we can not log onto using a Remote Desktop session. Logging on to the PC directly (sitting in front of it using the connected keyboard and monitor) work fine. From a second PC (tried a number of different ones but all Windows XP SP3) I run 'mstsc' and type in PC name to connect to. This shows the login box which we can enter the correct login details and click OK. Within a few second we get an error: Title: Fatal Error (Error Code:5) Error: Your Remote Desktop session is about to end. This computer might be low on virtual memory. Close your other programs, and then try connecting to the remote computer again. If the problem continues, contact your network administrator or technical support. None of the computers we are using are low on memory (2Gb+) and we let windows manage the virtual memory side of things. We do not see this with any other PC and do use Remote Desktop in meeting rooms to connect to user PCs with no problems.

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