Search Results

Search found 16355 results on 655 pages for 'lua c connection'.

Page 475/655 | < Previous Page | 471 472 473 474 475 476 477 478 479 480 481 482  | Next Page >

  • Can I use a class as an object in C# to create instances of that class?

    - by Troy
    I'm writing a fairly uncomplicated program which can "connect" to several different types of data sources including text files and various databases. I've decided to implement each of these connection types as a class inherited from an interface I called iConnection. So, for example, I have TextConnection, MySQLConnection, &c... as classes. In another static class I've got a dictionary with human-readable names for these connections as keys. For the value of each dictionary entry, I want the class itself. That way, I can do things like: newConnection = new dict[connectionTypeString](); Is there a way to do something like this? I'm fairly new to C# so I'd appreciate any help.

    Read the article

  • SQL Server CE - Internal error: Cannot open the shared memory region

    - by blu
    I have a SQL Server CE database that works fine in dev, but when installed on the client has an issue. The SQL Server CE 3.5 dependencies are copied as part of the deployment. The target machine is a clean Windows 7 32-bit Ultimate image. The message for the exception in the event log is: Internal error: Cannot open the shared memory region. It looks like this is SSCE_M_CANTOPENSHAREDMEMORY and the site says there isn't a connection string value to change this and that these issues are typically not resolvable by the end developers. Has anyone run into this, and if so were you able to resolve this issue?

    Read the article

  • Membership.GetUser() within TransactionScope throws TransactionAbortedException

    - by Bob Kaufman
    The following code throws a TransactionAbortedException with message "The transaction has aborted": using ( MyDataContext context = new MyDataContext() ) { using ( TransactionScope transactionScope = new TransactionScope() ) { Guid accountID = new Guid( Request.QueryString[ "aid" ] ); Account account = ( from a in context.Accounts where a.UniqueID.Equals( accountID ) select a ).SingleOrDefault(); IQueryable < My_Data_Access_Layer.Login > loginList = from l in context.Logins where l.AccountID == account.AccountID select l; foreach ( My_Data_Access_Layer.Login login in loginList ) { MembershipUser membershipUser = Membership.GetUser( login.UniqueID ); } } } The error occurs at the call to Membership.GetUser(). My Connection String is: <add name="MyConnectionString" connectionString="Data Source=localhost\SQLEXPRESS;Initial Catalog=MyDatabase;Integrated Security=True" providerName="System.Data.SqlClient" /> Everything I've read tells me that TransactionScope should just get magically applied to the Membership calls. The user exists (I'd expect a null return otherwise.)

    Read the article

  • Maintain set of local commits working with git-svn

    - by benizi
    I am using git to develop against a project hosted in subversion, using git-svn: git svn clone svn://project/ My general workflow has been to repeatedly edit-and-commit on the master branch, then commit to the svn repository via: git stash git svn dcommit git stash apply One of the local modifications that 'stash' command is preserving, that I don't want to commit to the svn repository, is a changed database connection string. What's the most convenient way to keep this local change without the extra 'stash' steps? I suspect that something like 'stash' or 'quilt' is what I'm looking for, but I'm still new enough to git that I think I'm missing some terminology that would lead to the exact incantation. Update: The only solution I found that seems to avoid the git stash + git-svn action + git stash apply series was to update the git-svn ref manually: (check in local-only change to 'master', then...) $ cat .git/refs/master > .git/refs/remote/git-svn $ git svn fetch (with at least one new SVN revision) And that leaves the local-only commit as a weird (probably unsafe) commit between two svn revisions.

    Read the article

  • How to detect non-graceful disconnect of Twisted on Linux?

    - by Victor Lin
    I wrote a server based on Twisted, and I encountered a problem, some of the clients are disconnected not gracefully. For example, the user pulls out the network cable. For a while, the client on Windows is disconnected (the connectionLost is called, and it is also written in Twisted). And on the Linux server side, my connectionLost of twisted is never triggered. Even it try to writes data to client, but the connection is lost. Why Twisted can't detect those non-graceful disconnection (even write data to client) on Linux? How to makes Twisted detect non-graceful disconnections? Because the feature Twisted can't detect non-graceful, I have lots of zombie user on my server. Thanks. Victor Lin.

    Read the article

  • How to use SharpSVN to (quickly) check if a remote folder/file exists on the server

    - by Ziphnor
    Say i have a svn repository at https://www.mysvn.com/svn/. How can i use SharpSVN to figure out whether the remote folder https://www.mysvn.com/svn/a/b/c exists on the server? I need to do it an a way that allows me to tell the difference between a failed connection (ie server down) and the folder simply not having been created yet. Calling info on the full https://www.mysvn.com/svn/a/b/c path does not seem to give an exception that enables me to tell the difference between no repository at all and just a missing folder. I could list all files for https://www.mysvn.com/svn/ but the repository can easily be so big that this can take too long. Right now im doing an info on first the root url and then on the full url. If the root url fails i treat it as a server problem, but if it succeeds and the full url fails i assume its because part of the path hasnt been created on the server.

    Read the article

  • Relation between TCP/IP Keep Alive and HTTP Keep Alive timeout values

    - by Suresh Kumar
    I am trying to understand the relation between TCP/IP and HTTP timeout values. Are these two timeout values different or same? Most Web servers allow users to set the HTTP Keep Alive timeout value through some configuration. How is this value used by the Web servers? is this value just set on the underlying TCP/IP socket i.e is the HTTP Keep Alive timeout and TCP/IP Keep Alive Timeout same? or are they treated differently? My understanding is (maybe incorrect): The Web server uses the default timeout on the underlying TCP socket (i.e. indefinite) and creates Worker thread that counts down the specified HTTP timeout interval. When the Worker thread hits zero, it closes the connection.

    Read the article

  • How does Garbage Collection in Java work?

    - by Bright010957
    I was wondering how the garbage collector in Java deals with the following situation. Object A has a reference to Object B and Object B has a reference to Object C. The main program has a reference to Object A. So you can use Object B trough Object A, and Object C trough Object B trough Object A. What happens to Object B and Object C, if the link between Object A and Object B is set to null? Should Object B and Object C now been collected by the Garbage Collector? I mean there is still a connection between Object B and Object C.

    Read the article

  • WCF Service worker thread communicate with ServiceHost thread

    - by Brent
    I have a windows NT Service that opens a ServiceHost object. The service host context is per-session so for each client a new worker thread is created. What I am trying to do is have each worker thread make calls to the thread that started the service host. The NT Service needs to open a VPN connection and poll information from a device on the remote network. The information is stored in a SQL database for the worker threads to read. I only want to poll the device if there is a client connected, which will reduce network trafic. I would like the worker threads to tell the service host thread that they are requesting information and start the polling and updating the database. Everything is working if the device is alway being polled and the database being updated.

    Read the article

  • Regarding to get refrence of IDot11AdHocManager Interface of COM WiFi AdHoc manager Interface

    - by sathaliyawala
    I am Trying to create AdHoc connection and for this i am using AdHoc wifi Interface provided by Microsoft. I have written code :- IDot11AdHocManager *pIAdHocMng = NULL ; HRESULT hr = CoInitialize(NULL); hr = CoCreateInstance(CLSID_Dot11AdHocManager,NULL,CLSCTX_INPROC_HANDLER ,IID_IDot11AdHocManager ,(void**)pIAdHocMng); if(hr == S_OK) printf("CreateNetwork Method success due to following reason :\n %ld",hr) ; else printf("CreateNetwork Method fail due to following reason : %ld \n ",hr) ; getch(); CoUninitialize(); But it will not return reference of Dot11AdHocManager it will return error and NULL value please help me to get the reference of Dot11AdHocManager Interface so i can use it method which help me to create the AdHoc Network

    Read the article

  • SignalR: hub invokation request

    - by Yuriy Pogrebnyak
    I'm writing custom SignalR client and I need to implement hub invokation. As I understood from .NET client code, I need to send post request to the following url (after establishing connection with server): http://serverurl/signalr/send?transport=serverSentEvents&connectionId=<my_connection_id> . In request body I need to send json string containing basic information about the invoked method. My question is how should this json look like? I'm trying to send smth like this (again, judging by .NET client code): {"data" : {"Hub" : "hubname", "Method" : "methodname", "Args" : {"message" : "msg"} } } But I get the following error: System.ArgumentNullException: Value cannot be null. Parameter name: s. What am I doing wrong? What are required parameters of sending json and how should it be formatted?

    Read the article

  • ORA-12514 TNS:listener does not currently know of service requested in connect descriptor

    - by Jacques
    We have an application running locally which two days worked fine and now we get the: TNS:listener does not currently know of service requested in connect descriptor error. I've tested the connection using TNSPing which resolved correctly and Tried SQLPlus to try connecting, which failed with the same error. (i.e. Sqlplus username/passowrd@addressname[or host name] The TNS Listener on the server is running. Oracle itself on the server is running. We don't know of any changes that were made to this environment. Anything else we can test to figure this one out? Thanks, Jacques

    Read the article

  • Session resume problem with Strophe attach and Ejabberd

    - by Adil
    I'm having a lot of difficulty getting strophe's 'attach()' function working. I am working on a social network where users will be surfing pages and at the same time keep their chat connection on. I don't want to reconnect/reauthorize on every page so as per this link (http://groups.google.com/group/strophe/browse_thread/thread/430da5e788278f3a/93c48c88164f382f?show_docid=93c48c88164f382f&fwc=1) i am storing the SID and RID into a cookie onunload. On the next page when i try to use the new SID and RID (after incrementing it by 1) my session is already destroyed. Ejabberd reports "Error on HTTP put. Reason: bad_key" WTF is happening?

    Read the article

  • Connecting to sql server database mdf file without installing sql server on client machine ?

    - by Shantanu Gupta
    I am creating a window application that need to use sql server database. I want to install this application to client machine without installing sql server so that my application can still connect to a database i.e mdf file that i will be providing at client system. How can i connect to a database(mdf) on client machine through my window application without installing sql server. ? I dont know is it possible or not. If possible what will be the connection string in that case. Database need not be used in network. Client mahine dont need any installation. Every thing needs to be run through pen drive

    Read the article

  • Simple comet example using php and jquery

    - by Ray
    I have searched on google for hours without finding a good and simple example of the comet technique using PHP. I just need an example that uses a persistent HTTP connection or something similar. I dont want to use a polling technique because I have something like that set up and not only is it difficult to work with and manage its a big hog of resources. Also I am using IIS7 not Apache. A good example would be really helpful so I can move on from this ugly polling technique. ,Thanks

    Read the article

  • Serial Mac OS X constantly freezes/locks/dissappears for USB to Arduino

    - by Niraj D
    I have a problem with my C++ code running in Xcode with both the AMSerial library as well as the generic C (ioctl, termios). After a fresh restart, my application works well but after I "kill" the program the Serial (I think) is not released. I have checked my open files under /dev and have killed the connection to serial USB from there, but my C++ still can't open the USB port. I have narrowed this down to being a low level Mac OS X issue, regarding blocking the port indefinitely, regardless of closing it using the aforementioned libraries. Just for context, I'm trying to send numbers through my USB port, serially to an Arduino Duemilanove at 9600 baud. Running Serial Monitor in Arduino is perfectly fine, however, running through a C++ application it freezes up my computer, occasionally, my mouse/keyboard freeze up: requiring a hard reset. How can this problem be fixed? It seems like Mac OS X is not USB friendly!

    Read the article

  • Mongo connect problem using asp.net

    - by Amr ElGarhy
    I wrote these lines in My Application start event: var mongo = new Mongo(); mongo.Connect(); var blog = mongo.GetDatabase("Blog"); mongo.Disconnect(); but on this line: mongo.Connect(); it gave me this error: No connection could be made because the target machine actively refused it 127.0.0.1:27017 I am a beginner using Mongodb and i am just try to make sample code to see it's power. So i have no idea how to solve this problem. I am using VS2008 with MongoDB.Driver on Windows7.

    Read the article

  • Is there something like bsdiff/Courgette for jar files?

    - by Ken Liu
    Google uses bsdiff and Courgette for patching binary files like the Chrome distribution. Do any similar tools exist for patching jar files? I am updating jar files remotely over a bandwidth-limited connection and would like to minimize the amount of data sent. I do have some control over the client machine to some extent (i.e. I can run scripts locally) and I am guaranteed that the target application will not be running at the time. I know that I can patch java applications by putting updated class files in the classpath, but I would prefer a cleaner method for doing updates. It would be good if I could start with the target jar file, apply a binary patch, and then wind up with an updated jar file that is identical (bitwise) to the new jar (from which the patch was created).

    Read the article

  • Asp.net override Membership settings at runtime (asp.net mvc)

    - by minal
    I had an application that hooked onto 1 single database. The app now needs to hook into multiple databases. What we want to do is, using the same application/domain/hostname/virtual dir give the user the option on the login screen to select the "App/Database" they want to connect into. Each database has the App tables/data/procs/etc as well as the aspnet membership/roles stuff. When the user enters the username/password and selects (select list) the application, I want to validate the user against the selected applications database. Presently the database connection string for membership services is saved in the web.config. Is there any way I can override this at login time? Also, I need the "remember me" function to work smoothly as well. How does this work when the user comes back to the app in 5 hours... This process should be able to identify the user and application and log in appropriately.

    Read the article

  • Diagramming in Silverlight MVVM- connecting shapes

    - by silverfighter
    Hi, have I have a quesition regarding MVVM pattern in the uses case of diagramming. What I have so far is a list of Items which are my Shapes. ObservableCollection<ItemsViewModels> Items; and a Collection of Connection of Items ObservableCollection<ConnectionViewModel> Each ItemViewModel has an ID and a ConnectionViewModel has two ID to connect the Items. My ItemsViewModel Collection is bound to a itemscontrol which is layout on a Canvas. With the ElementMouseDragBehavior I am able to drag my Items around. Now comes my big question =) How can I visualize my connections that I will be able to move the items around and the items stay connected with a line either straign or bezier. I don't know how to abstract that with the mvvm pattern. Thanks for any help...

    Read the article

  • How to specify Java Option (System Property) for embedded Tomcat while running Grails App?

    - by hko19
    Specifically, I want to have my grails app under development to connect to an Oracle db defiined by an tnsnames.ora file. I have the tnsnames.ora file located in c:\drivers\Network\ on my PC. When I run the grails app via "grails run-war", the db connection string defined in the tnsnames.ora file doesn't seem to be picked up: grails prod run-war -Dserver.port=62215 -Doracle.net.tns_admin=C:\drivers\Netowrk\ It seems the name-value pair of oracle.net.tns_admin is not being passed to the JVM used by the the embedded Tomcat that comes with Grails 1.2.0. If not, what is the proper way of specify it, or pass any JAVA_OPTS to the underlying JVM?

    Read the article

  • open webim ( Mibew Messenger ) time out, reconnecting

    - by Senthil Kumar
    hi, i hope you guys know about webim a.k.a mibew messenger. I know only java, jsp and no idea about php except for some basics. Anyways, i ran this app in my apache2.2 local server. Everything works superb! But if i change my db to a virtual machine and give its address in the config.php (previously i had used localhost), in the visitors page, i get timeout, reconnecting. Login has no prob, so my guess is db connection is fine. I even changed the default page refresh time from 2 to 10. Nothing happens. Still same thing. You guys have any idea?

    Read the article

  • What are the worst working conditions you have written code in?

    - by Saurabh Sawant
    There are good times and there are worst times. I recently had to write code in a hot room with temperatures near 107°F (42°C); nothing to sit on; 64 Kbps inconsistent internet connection; warm water for drinking and a lot of distractions and interruptions. I am sure many people have been in similar situations and I would like to know your experiences. More experiences at HackerNews about the same topic. Even more experiences at Slashdot about the same subject.

    Read the article

  • Relating NP-Complete problems to real world problems

    - by terru
    I have a decent grasp of NP Complete problems; that's not the issue. What I don't have is a good sense of where they turn up in "real" programming. Some (like knapsack and traveling salesman) are obvious, but others don't seem obviously connected to "real" problems. I've had the experience several times of struggling with a difficult problem only to realize it is a well known NP Complete problem that has been researched extensively. If I had recognized the connection more quickly I could have saved quite a bit of time researching existing solutions to my specific problem. Are there any resources (online or print) that specifically connect NP Complete to real world instances?

    Read the article

  • Python urllib2 Basic Auth Problem

    - by Simon
    I'm having a problem sending basic AUTH over urllib2. I took a look at this article, and followed the example. My code: passman = urllib2.HTTPPasswordMgrWithDefaultRealm() passman.add_password(None, "api.foursquare.com", username, password) urllib2.install_opener(urllib2.build_opener(urllib2.HTTPBasicAuthHandler(passman))) req = urllib2.Request("http://api.foursquare.com/v1/user") f = urllib2.urlopen(req) data = f.read() I'm seeing the following on the Wire via wireshark: GET /v1/user HTTP/1.1 Host: api.foursquare.com Connection: close Accept-Encoding: gzip User-Agent: Python-urllib/2.5 You can see the Authorization is not sent, vs. when I send a request via curl: curl -u user:password http://api.foursquare.com/v1/user GET /v1/user HTTP/1.1 Authorization: Basic =SNIP= User-Agent: curl/7.19.4 (universal-apple-darwin10.0) libcurl/7.19.4 OpenSSL/0.9.8k zlib/1.2.3 Host: api.foursquare.com Accept: */* For some reason my code seems to not send the authentication - anyone see what I'm missing? thanks -simon

    Read the article

< Previous Page | 471 472 473 474 475 476 477 478 479 480 481 482  | Next Page >