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• UI Automation / Retrieve File Extension / C#

  - by AP

  Dear all, I am tasked with a project that requires me to retreieve a specific file from a folder where I can only get an X and Y on the screen. While in XP I managed to use the fact that windows explorer is in essence a list view, and used the WM_HITTEST message to obtain information about the file, in Windows 7, this is not the case. To solve this problem, I am using UI Automation, which is a great tool for such things, only problem is that in the case, the windows handle I am looking at belongs to the desktop, and the desktop might have several files with the same name but with different extensions (and windows is configured to "hide extensions of known file types") UI automation does not return the extension back to me. I have tried many things, but I cannot find any robust solution which would give me 100% success. Has anyone tried this? successfully? Would appreciate any pointers. Many thanks,

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• Problem with the scrollbar of a UIWebView

  - by Paulo Ferreira

  Hi there! Im using a UIWebView to access a website, when i rotate the phone (landscape) the UIWebView is properly resized and the scrollbar are on the right place (on the right edge...) but when i acess any of input fields to fill the information required and exit it the UIWebView scrollbar jumps to the middle of screen (looks like it get back to 320, the width of the screen on portrait). Some useful info, this program was created using IB, have lots of outlets, im thinking about in do (redo) everything programmatically cause i was not the author of the first version... If anyone have seen this before plz let me know.. Thanks in advance!

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• SCSI Windows Setup on Dell Precision 670 Workstation...please help.

  - by sweetcoder

  Error Windows Setup: "setup did not find any hard disk drives installed in your computer" This is not exactly a programming question but I thought you guys might be able to help. I just received a Dell Precision 670 workstation. Windows is not recognizing the hard drive and I have experienced this before with other computers. I usually would just go in the bios and set the configuration to compatibility mode. I have no idea how to do this on this machine. There is this Adaptec SCSI HostRaid BIOS v4.30.4S5 screen on startup. It says to press CTRL A for SCSI select utility. It shows a Maxtor ATLAS10K5_73WLS for the drive. I was wondering if anyone out there knew how to configure this thing so that windows setup will recognize the hard drive? Any advice is very much appreciated and if you have to know further information please let me know. Raid was turned off in the BIOS for this device. TY

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• How to use jQuery .each() - I get a value, but it's the wrong one

  - by Ankur

  I am returning a JSON object (as a String) through a servlet. The JSON object looks like this: {"3":"Martin Luther","30":"Boris Becker","32":"Joseph Goebels","19":"Leonardo Da Vinci","31":"Adolf Hitler"} My jQuery looks like this (the submission of data is correct because I get a proper looking result from the servlet): $.ajax( { type : "GET", url : "MyServlet", data : queryString + "count=" + variables, success : function(resultObj) { $.each(resultObj, function(key, value) { $("#resultCount").html(key+", "+value); }); } }); However when I try to print the results, that is the variables key and value, I get a number for the key but not a number from the JSONObject and an empty string instead of the value. Essentially the question is about how to "extract" the information from a JSON object.

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• Querying a Cassandra column family for rows that have not been updated in X days

  - by knorv

  I'm moving an existing MySQL based application over to Cassandra. So far finding the equivalent Cassandra data model has been quite easy, but I've stumbled on the following problem for which I'd appreciate some input: Consider a MySQL table holding millions of entities: CREATE TABLE entities ( id INT AUTO_INCREMENT NOT NULL, entity_information VARCHAR(...), entity_last_updated DATETIME, PRIMARY KEY (id), KEY (entity_last_updated) ); The table is regularly queried for entities that need to be updated: SELECT id FROM entities WHERE entity_last_updated IS NULL OR entity_last_updated < DATE_ADD(NOW(), INTERVAL -7*24 HOUR) ORDER BY entity_last_updated ASC; The entities returned by this queries are then updated using the following query: UPDATE entities SET entity_information = ?, entity_last_updated = NOW() WHERE id = ?; What would be the corresponding Cassandra data model that would allow me to store the given information and effectively query the entities table for entities that need to be updated (that is: entities that have not been updated in the last seven days)?

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• Unix users and permissions and how they interact with web files.

  - by Columbo

  Hello, When you issue the command ls in Linux you get this sort of thing: drwxr--r-- 1 fred editors 4096 drafts -rw-r--r-- 1 fred editors 30405 file1.php -r-xr-xr-x 1 fred fred 8460 file2.php I know that the rwxrwxrwx are the read, write and execute permissions for the current user. And I think I know that 'fred' is the user who owns the file. So I assume fred can write to file1 but no one else can. But what is the extra bit 'editors' and what is the difference between file1 and file2 with respect to one having an ownership of 'fred editors' and the other 'fred fred'? Also if a web user connects to one of the files, what is their user name and where is this decided? If the server decided that user connecting from the web was going to be fred, does this mean any web user could write to file1? Any information welcomed, I am resaerching this but just getting confused. Thanks

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• Silverlight WCF with two-way SSL security certificates

  - by dlang

  Dear All! I would like to implement a server - client software with the following security requirements: WCF-Services need to be secured with SSL and Certificates for both, the server and the client Client certificates need to be generated programmatically upon user registration Client-certificates are deployed via a an automatically generated installer-package Altough the client-certificates are self-signed (no authorized CA for the generation server) the end-user must not add the server-certificate to the trusted certificates in the local Certificate Store My problems: I cannot find any information regarding establishing such a two-way ssl-security for wcf, while the server-certificate is not signed by an authorized CA and instead is created programmatically with "makecert"... My question: Is it technically possible to implement this requirements? If yes - could you provide some hints how to get started? Thank you!

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• Forth: free video tutorials?

  - by Peter Mortensen

  Can you recommend any free Forth video tutorials (except for following) ? The only one I know of is Samuel A. Falvo's excellent "Over The Shoulder Episode 1: Text Preprocessing in Forth". MPEG. 102 MB. There are also videos from the annual Forth Day, but I don't consider those to be tutorials. (Unfortunately Forth is, like R, C, C++, Java, C#, D, COM, .NET, F# and Frontier, an unspecific search term. Search tip for Forth: qualify it with "ans" - as in ANS Forth, the ANSI Forth Standard.) Accumulated based on answers and other information: Introductions to Forth Forth. By Ben Stiglitz. At RubyConf 2008 Orlando Florida, U.S.A. 13 min 35 secs. 32 MB. MP4. Advanced Over The Shoulder Episode 1: Text Preprocessing in Forth. By Samuel A. Falvo. 1 h 06 min 25 secs. 102 MB. MPEG.

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• Change the Views location

  - by Vinni

  I am developing a website in MVC 2.0. I want to change the View folder location in my website. I wanted to keep the views folder inside other folders, When I try to do so i am getting following errors The view 'Index' or its master was not found. The following locations were searched: ~/Views/Search/Index.aspx ~/Views/Search/Index.ascx ~/Views/Shared/Index.aspx ~/Views/Shared/Index.ascx Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. My Views folder will be in ~/XYZ/ABC/Views instead of ~/Views. Please solve my problem. Will I get any problems If I change the default Views folder location. Do I need to change anything in HTML Helper classes because I don't know anything in MVC as this is my starting project i dont want to risk..Please help me out...

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• How to access the Desktop Composition Engine from a WinForms app?

  - by MusiGenesis

  Is it possible to access Desktop Composition Engine in Windows Vista from a winforms application? The DCE apparently involves applications rendering to DCE buffers instead of directly to the screen. Since a winforms app has no way of getting information about the monitor's refresh rate and scanline status (other than via DirectX), animation in a winforms app is subject to tearing effects. With DCE enabled, the tearing effects are lessened but still there (apparently the DCE can still grab a buffer that your app is halfway through writing to and render it to the screen, thereby producing the half-one-frame-half-of-the-next tearing effects). Is there any way for my winforms app to communicate with the DCE and possible avoid rendering during buffer switchover times?

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• SSL Form Post in ASP.NET MVC 1.0

  - by goombaloon

  I'd like to use SSL for the post action on the login page of my MVC 1.0 app. I've seen some articles related to the [RequireSSL] attribute in ASP.NET MVC Futures. However, since this works using a redirect, I assume it's not an option (can't redirect a POST, correct?). Ultimately, my goal is to get the Html.BeginForm method to render "https://..." as the form's action so that I can secure the information being posted (login info). How have others handled this?

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• How do I get the member to which my custom attribute was applied?

  - by Sarah Vessels

  I'm creating a custom attribute in C# and I want to do different things based on whether the attribute is applied to a method versus a property. At first I was going to do new StackTrace().GetFrame(1).GetMethod() in my custom attribute constructor to see what method called the attribute constructor, but now I'm unsure what that will give me. What if the attribute was applied to a property? Would GetMethod() return a MethodBase instance for that property? Is there a different way of getting the member to which an attribute was applied in C#? [AttributeUsage(AttributeTargets.Method | AttributeTargets.Property, AllowMultiple = true)] public class MyCustomAttribute : Attribute Update: okay, I might have been asking the wrong question. From within a custom attribute class, how do I get the member (or the class containing the member) to which my custom attribute was applied? Aaronaught suggested against walking up the stack to find the class member to which my attribute was applied, but how else would I get this information from within the constructor of my attribute?

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• MembershipProvider, IPrincipal, IIdentity?

  - by MRFerocius

  Hello guys; I have a conceptual question... I am making an Intranet application (Web platform) for a company. I have a SQL Server DB with these tables: Users (userID, userName, userPass, roleID) Roles (roleID, roleName) Pages (pageID, pageURL) RolesXPages(pageID, roleID) How is the best way to create a structure to store all this information while the user navigates the site, I mean, on the thread I should be able to check his role, his pages (the ones he can access) I have been reading and there is a lot of stuff there where Im confused, I saw the MembershipProvider, IPrincipal, IIdentity, etc classes but Im not sure what should be the best one for me. Any thoughts... Thanks in advance! Edit: Everytime gets more confusing... I just want to handle those structures at runtime and be able to mantain state during page callbacks or changing pages...

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• How does Windows LIve ID work?

  - by Morgan Cheng

  I happens to find this nice article explaining how OpenID works. Clearly, OpenID consumer and OpenID server transfer information through URL query string. I'm wondering how Live ID accomplish similar functionality. It seems the info is not exchanged through query string in URL. And, since Live ID login server have different domain name from consumer domain, it is not applicable to transfer info through cookie. I tried to google tutorial of Live ID, but the result is full of jargon and hard to understand. Is there any easy-to-understand tutorial about How Live ID works?

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• Does Blogging affect Job Prospects?

  - by BM

  Would a hiring manager at a small-to-medium consulting firm/corporation consider active blogging by a candidate about Programming/software/technology as a positive? Should the candidate disclose this information during the interviews or put it on the resume? Thanks for the answers, So far the views about this topic has been.. Don't mention the blog if it is not relevant to the job. Mention the blog, if you believe your blog has quality content. Potential risk of not being accepted by culture of the employer's workplace. Could be a valuable for consultants to publish & preview their skills and experience. Certain Employers may consider blogging of a candidate a plus. Be careful what you post on the blog,no badmouthing,rants and overt criticism of others. Do not lie about blogging,if directly asked during the interview.

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• How to get the PrintDocumentImageableArea for a given PrintQueue without going through PrintDialog?

  - by Patrick Klug

  From MSDN (link): The type PrintDocumentImageableArea has no public constructor. Hence, the variable documentImageableArea must be declared and assigned to Nothing and only then passed to the method. This method displays a PrintDialog requiring input from the user. After the user has selected a printer, paper size, and orientation and closed the dialog, documentImageableArea points to an actual object and its properties are initialized. I have my custom print dialog and need to get the PrintDocumentImageableArea of a given PrintQueue and PrintTicket! (I need the margin's I need to apply) From what I can gather it is quite common for anything but the most basic applications to use their own custom print dialog. There must be a way to get to this information!? Any input appreciated!

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• SO_LINGER and closing sockets(WINSOCK)

  - by Johnny Walked

  hey. im writing a multithreaded winsock application and im having some issues with closing the sockets. first of all, is there a limit for a number of simultaneously open sockets? lets say like 32 sockets all in once. i establish a connection on one of the sockets, and passing information and it all goes right. problem is when i disconnect the socket and then reconnect to the same destination, i get a RST from the server after my SYN. i dont have the code for the server app so i cant debug it. when i used SO_LINGER and it sent a RST flag at the end of each session - it worked. but i dont want to end my connections this way. when not using SO_LINGER a FIN flag was sent but it seems the connection was not really closed. any help? thanks

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• Working with expression AST:s

  - by Marcus

  Hi, Is there any best practice when working with AST:s? I have a parsed expression AST. ConstantExpression, BinaryExpression etc. I want to populate a GUI-dialog with information from the AST, and it's here where I get kinda confused because my code gets pretty messy. Example: expression = "Var1 > 10 AND Var2 < 20" I want to populate two textboxes with value 10 resp. 20 from the AST. What I'm doing now is a recursive method that checks for correct child expression-types (with .Net Is-operator) and acts accordingly and the code is really "smelly" :) Is there any design pattern, like Visitor or such, that makes this somewhat easier/more readable/maintainable ?

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• Entity Framework Vote of No Confidence - relevant in .NET 4?

  - by Asaf R

  Hi, I'm deciding on an ORM for a big project and was determined to go for ADO.NET Entity Framework, specifically its new version that ships with .NET 4. During my search for information on EF I stumbled upon ADO .NET Entity Framework Vote of No Confidence which I'm not sure how to take. The Vote of No Confidence was written sometime in 2008 to convince Microsoft to listen to specific criticism for EF v1. It's not clear whether the claims made in the Vote of No Confidence are still valid (in .NET 4) and if they're serious enough to use other solutions. NHibernate is a mature alternative, but I don't know what problems it brings. I'm generally more inclined towards a Ms solution, mainly because I can count on integration with VS and on their developer support. I would appreciate examples of how the problems mentioned in the Vote of No Confidence affect in real world projects. More importantly, are the claims made there still relevant in EF for .NET 4? Thanks, Asaf

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• Share application in local network

  - by hedgehogrider

  I would like to eventually create a managerial program that shares and updates information for multiple computers that are on the same network. I am fairly familiar with Python, C++ and a bit of Java, is there a library I could use with any of these languages to design such a program? I could probably create the local interface from where I am right now, but when it comes to packing and sharing data I could not be more clueless; any advice would be platinum. The program will need to differentiate between administrative and user access if that makes a difference.

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• Implementing IComparable<NotSelf>

  - by Luc Touraille

  This might be a trivial question, but I didn't find any information about this: is it "harmful" or considered bad practice to make a type T implement IComparable<S> (T and S being two different types)? Example: class Foo : IComparable<int> { public int CompareTo(int other) { if (other < i) return -1; if (other > i) return 1; return 0; } private int i; } Should this kind of code be avoided, and if yes, why?

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• Why don't the .net 4.0 charting controls work in Visual Web Developer 2010 Express?

  - by kc

  The .net charting controls are now built into .net 4.0. They work great in Visual Studio 2010. However, they do not work in Visual Web Developer 2010 Express (which is what I have at home.) I get the error, System.Web.HttpException: Error executing child request for ChartImg.axd. That sounds like the message from .net 3.5 if charting wasn't set up correctly. But the bottom of the same page says, "Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1" Does anyone know why this doesn't work?

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• Android - Redirect sending of SMS message

  - by Donal Rafferty

  I currently use a ContentObserver to listen for changes in the SMS ContentProvider and tell my application whether a message has been sent or received. Upon getting notification that a message is being sent I would like to present the user the option to send that SMS normally over GSM/CDMA or if connected to Wifi to send the SMS over an ip connection. I am aware of how to present my own application as an option to create and send an SMS when a user clicks on a contacts information and "Send SMS" but this is not what I want. I want the user to be able to use the native or a 3rd party SMS application and when they try to send an SMS present them with a dialog screen giving them the option to send the SMS in whichever direction they want. So is it possible that once I get notified an SMS is being sent to pause it, allow the user to pick the desired route to send it and then change the sms from being sent over GSM/CDMA to being sent using a protocol over IP if required?

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• TcpListener.Start() does not open the port

  - by SoMoS

  Hello, I have a class that inherits from the TcpListener, this class Shadows the Start method just to call the base Start() and the base BeginAcceptTcpClient(). From time to time the method is called but the port is not opened (netstat does not show the port open). The class looks like this Public Class ExtendedTcpListener Inherits System.Net.Sockets.TcpListener Public Shadows Sub Start() SyncLock (m_stopLock) MyBase.Start() MyBase.BeginAcceptTcpClient(AddressOf Me.CompleteAcceptTcpClient, Me) My.Application.Log.WriteEntry("Extended Tcp Listener started ...", TraceEventType.Verbose) End SyncLock End Sub Any idea on what's happening or how to debug the issue? As the Start() is called without exception I expected to find the port always opened (the log is always written). Extra information: when the Start method works fine it works each time until app is restarted. When the Start method does not work it won't work again until the app is restarted.

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• What are the use cases for closures/callback functions in Javascript?

  - by Christopher Altman

  I was listening to Crockford's talk on Javascript closures and am convinced of the benefit of information hiding, but I do not have a firm understanding of when to use callback functions. It is mostly a true statement that a person could accomplish the same functionality with or without callbacks. As someone who is writing code, what heuristics or cues should I keep in mind when determining when to use callbacks/closures? I am not looking for the blanket statement 'Closures make more secure code', rather a list of practical examples or rules of thumb for when callbacks are the right idea. Crockford's Presentation: http://www.yuiblog.com/blog/2010/04/08/video-crockonjs-5/

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