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  • After upgrading to Ubuntu 12.04, my broadcom wireless sta driver is not working

    - by Nuwan Aluwihare
    I upgraded my HP DV5-1000US Laptop to Ubuntu 12.04. But I cannot get it connected to the Wireless. I went through the settings, Hardware, Additional Drivers and it says that "No proprietary drivers are in use on this system". Also it says "Broadcom STA Wireless Driver" is not activated. I tried to activate it after got my laptop connected to the net through a wired connection, but it says "Sorry, installation of this driver failed. Please have a look at the log file for details: /var/log/jockey.log"

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  • DAL Exception handling in a MVP application

    - by Chathuranga
    In a MVP win forms application I'm handling exceptions as follows in DAL. Since the user messaging is not a responsibility of DAL, I want to move it in to my Presentation class. Could you show me a standard way to do that? public bool InsertAccount(IBankAccount ba) { string selectStatement = @"IF NOT EXISTS (SELECT ac_no FROM BankAccount WHERE ac_no=@ac_no) BEGIN INSERT INTO BankAccount ..."; using (SqlConnection sqlConnection = new SqlConnection(db.ConnectionString)) { using (SqlCommand sqlCommand = new SqlCommand(selectStatement, sqlConnection)) { try { sqlConnection.Open(); sqlCommand.Parameters.Add("@ac_no", SqlDbType.Char).Value = ba.AccountNumber; // // sqlCommand.ExecuteNonQuery(); return true; } catch (Exception e) { MessageBox.Show(("Error: " + e.Message)); } if (sqlConnection.State == System.Data.ConnectionState.Open) sqlConnection.Close(); return false; } } }

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  • Handling permissions in a MVP application

    - by Chathuranga
    In a windows forms payroll application employing MVP pattern (for a small scale client) I'm planing user permission handling as follows (permission based) as basically its implementation should be less complicated and straight forward. NOTE : System could be simultaneously used by few users (maximum 3) and the database is at the server side. This is my UserModel. Each user has a list of permissions given for them. class User { string UserID { get; set; } string Name { get; set; } string NIC {get;set;} string Designation { get; set; } string PassWord { get; set; } List <string> PermissionList = new List<string>(); bool status { get; set; } DateTime EnteredDate { get; set; } } When user login to the system it will keep the current user in memory. For example in BankAccountDetailEntering view I control the controller permission as follows. public partial class BankAccountDetailEntering : Form { bool AccountEditable {get; set;} private void BankAccountDetailEntering_Load(object sender, EventArgs e) { cmdEditAccount.enabled = false; OnLoadForm (sender, e); // Event fires... If (AccountEditable ) { cmdEditAccount.enabled=true; } } } In this purpose my all relevant presenters (like BankAccountDetailPresenter) should aware of UserModel as well in addition to the corresponding business Model it is presenting to the View. class BankAccountDetailPresenter { BankAccountDetailEntering _View; BankAccount _Model; User _UserModel; DataService _DataService; BankAccountDetailPresenter( BankAccountDetailEntering view, BankAccount model, User userModel, DataService dataService ) { _View=view; _Model = model; _UserModel = userModel; _DataService = dataService; WireUpEvents(); } private void WireUpEvents() { _View.OnLoadForm += new EventHandler(_View_OnLoadForm); } private void _View_OnLoadForm(Object sender, EventArgs e) { foreach(string s in _UserModel.PermissionList) { If( s =="CanEditAccount") { _View.AccountEditable =true; return; } } } public Show() { _View.ShowDialog(); } } So I'm handling the user permissions in the presenter iterating through the list. Should this be performed in the Presenter or View? Any other more promising ways to do this? Thanks.

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  • JBoss AS 5: starts but can't connect (Windows, remote)

    - by Nuwan
    Hello I installed Jboss 5.0GA and Its works fine in localhost.But I want It to access through remote Machine.Then I bind my IP address to my server and started it.This is the command I used run.bat -b 10.17.62.63 Then the server Starts fine This is the console log when starting the server > =============================================================================== > > JBoss Bootstrap Environment > > JBOSS_HOME: C:\jboss-5.0.0.GA > > JAVA: C:\Program Files\Java\jdk1.6.0_34\bin\java > > JAVA_OPTS: -Dprogram.name=run.bat -server -Xms128m -Xmx512m > -XX:MaxPermSize=25 6m -Dorg.jboss.resolver.warning=true -Dsun.rmi.dgc.client.gcInterval=3600000 -Ds un.rmi.dgc.server.gcInterval=3600000 > > CLASSPATH: C:\jboss-5.0.0.GA\bin\run.jar > > =============================================================================== > > run.bat: unused non-option argument: ûb run.bat: unused non-option > argument: 0.0.0.0 13:43:38,179 INFO [ServerImpl] Starting JBoss > (Microcontainer)... 13:43:38,179 INFO [ServerImpl] Release ID: JBoss > [Morpheus] 5.0.0.GA (build: SV NTag=JBoss_5_0_0_GA date=200812041714) > 13:43:38,179 INFO [ServerImpl] Bootstrap URL: null 13:43:38,179 INFO > [ServerImpl] Home Dir: C:\jboss-5.0.0.GA 13:43:38,179 INFO > [ServerImpl] Home URL: file:/C:/jboss-5.0.0.GA/ 13:43:38,195 INFO > [ServerImpl] Library URL: file:/C:/jboss-5.0.0.GA/lib/ 13:43:38,195 > INFO [ServerImpl] Patch URL: null 13:43:38,195 INFO [ServerImpl] > Common Base URL: file:/C:/jboss-5.0.0.GA/common/ > > 13:43:38,195 INFO [ServerImpl] Common Library URL: > file:/C:/jboss-5.0.0.GA/comm on/lib/ 13:43:38,195 INFO [ServerImpl] > Server Name: default 13:43:38,195 INFO [ServerImpl] Server Base Dir: > C:\jboss-5.0.0.GA\server 13:43:38,195 INFO [ServerImpl] Server Base > URL: file:/C:/jboss-5.0.0.GA/server/ > > 13:43:38,210 INFO [ServerImpl] Server Config URL: > file:/C:/jboss-5.0.0.GA/serve r/default/conf/ 13:43:38,210 INFO > [ServerImpl] Server Home Dir: C:\jboss-5.0.0.GA\server\defaul t > 13:43:38,210 INFO [ServerImpl] Server Home URL: > file:/C:/jboss-5.0.0.GA/server/ default/ 13:43:38,210 INFO > [ServerImpl] Server Data Dir: C:\jboss-5.0.0.GA\server\defaul t\data > 13:43:38,210 INFO [ServerImpl] Server Library URL: > file:/C:/jboss-5.0.0.GA/serv er/default/lib/ 13:43:38,210 INFO > [ServerImpl] Server Log Dir: C:\jboss-5.0.0.GA\server\default \log > 13:43:38,210 INFO [ServerImpl] Server Native Dir: > C:\jboss-5.0.0.GA\server\defa ult\tmp\native 13:43:38,210 INFO > [ServerImpl] Server Temp Dir: C:\jboss-5.0.0.GA\server\defaul t\tmp > 13:43:38,210 INFO [ServerImpl] Server Temp Deploy Dir: > C:\jboss-5.0.0.GA\server \default\tmp\deploy 13:43:39,710 INFO > [ServerImpl] Starting Microcontainer, bootstrapURL=file:/C:/j > boss-5.0.0.GA/server/default/conf/bootstrap.xml 13:43:40,851 INFO > [VFSCacheFactory] Initializing VFSCache [org.jboss.virtual.pl > ugins.cache.IterableTimedVFSCache] 13:43:40,866 INFO > [VFSCacheFactory] Using VFSCache [IterableTimedVFSCache{lifet > ime=1800, resolution=60}] 13:43:41,616 INFO [CopyMechanism] VFS temp > dir: C:\jboss-5.0.0.GA\server\defaul t\tmp 13:43:41,648 INFO > [ZipEntryContext] VFS force nested jars copy-mode is enabled. > > 13:43:44,288 INFO [ServerInfo] Java version: 1.6.0_34,Sun > Microsystems Inc. 13:43:44,288 INFO [ServerInfo] Java VM: Java > HotSpot(TM) Server VM 20.9-b04,Sun Microsystems Inc. 13:43:44,288 > INFO [ServerInfo] OS-System: Windows XP 5.1,x86 13:43:44,569 INFO > [JMXKernel] Legacy JMX core initialized 13:43:50,148 INFO > [ProfileServiceImpl] Loading profile: default from: org.jboss > .system.server.profileservice.repository.SerializableDeploymentRepository@e72f0c > (root=C:\jboss-5.0.0.GA\server, > key=org.jboss.profileservice.spi.ProfileKey@143b > 82c3[domain=default,server=default,name=default]) 13:43:50,148 INFO > [ProfileImpl] Using repository:org.jboss.system.server.profil > eservice.repository.SerializableDeploymentRepository@e72f0c(root=C:\jboss-5.0.0. > GA\server, > key=org.jboss.profileservice.spi.ProfileKey@143b82c3[domain=default,s > erver=default,name=default]) 13:43:50,148 INFO [ProfileServiceImpl] > Loaded profile: ProfileImpl@8b3bb3{key=o > rg.jboss.profileservice.spi.ProfileKey@143b82c3[domain=default,server=default,na > me=default]} 13:43:54,804 INFO [WebService] Using RMI server > codebase: http://127.0.0.1:8083 / 13:44:12,147 INFO [CXFServerConfig] > JBoss Web Services - Stack CXF Runtime Serv er 13:44:12,147 INFO > [CXFServerConfig] 3.1.2.GA 13:44:29,788 INFO > [Ejb3DependenciesDeployer] Encountered deployment AbstractVFS > DeploymentContext@29776073{vfszip:/C:/jboss-5.0.0.GA/server/default/deploy/myE-e > jb.jar} 13:44:29,819 INFO [Ejb3DependenciesDeployer] Encountered > deployment AbstractVFS > DeploymentContext@29776073{vfszip:/C:/jboss-5.0.0.GA/server/default/deploy/myE-e > jb.jar} 13:44:29,819 INFO [Ejb3DependenciesDeployer] Encountered > deployment AbstractVFS > DeploymentContext@29776073{vfszip:/C:/jboss-5.0.0.GA/server/default/deploy/myE-e > jb.jar} 13:44:29,819 INFO [Ejb3DependenciesDeployer] Encountered > deployment AbstractVFS > DeploymentContext@29776073{vfszip:/C:/jboss-5.0.0.GA/server/default/deploy/myE-e > jb.jar} 13:44:37,116 INFO [JMXConnectorServerService] JMX Connector > server: service:jmx > :rmi://127.0.0.1/jndi/rmi://127.0.0.1:1090/jmxconnector 13:44:38,022 > INFO [MailService] Mail Service bound to java:/Mail 13:44:43,162 WARN > [JBossASSecurityMetadataStore] WARNING! POTENTIAL SECURITY RI SK. It > has been detected that the MessageSucker component which sucks > messages f rom one node to another has not had its password changed > from the installation d efault. Please see the JBoss Messaging user > guide for instructions on how to do this. 13:44:43,209 WARN > [AnnotationCreator] No ClassLoader provided, using TCCL: org. > jboss.managed.api.annotation.ManagementComponent 13:44:43,600 INFO > [TransactionManagerService] JBossTS Transaction Service (JTA version) > - JBoss Inc. 13:44:43,600 INFO [TransactionManagerService] Setting up property manager MBean and JMX layer 13:44:44,366 INFO > [TransactionManagerService] Initializing recovery manager 13:44:44,678 > INFO [TransactionManagerService] Recovery manager configured > 13:44:44,678 INFO [TransactionManagerService] Binding > TransactionManager JNDI R eference 13:44:44,787 INFO > [TransactionManagerService] Starting transaction recovery man ager > 13:44:46,428 INFO [Http11Protocol] Initializing Coyote HTTP/1.1 on > http-127.0.0 .1-8080 13:44:46,459 INFO [AjpProtocol] Initializing > Coyote AJP/1.3 on ajp-127.0.0.1-80 09 13:44:46,459 INFO > [StandardService] Starting service jboss.web 13:44:46,475 INFO > [StandardEngine] Starting Servlet Engine: JBoss Web/2.1.1.GA > 13:44:46,616 INFO [Catalina] Server startup in 350 ms 13:44:46,709 > INFO [TomcatDeployment] deploy, ctxPath=/web-console, vfsUrl=manag > ement/console-mgr.sar/web-console.war 13:44:48,553 INFO > [TomcatDeployment] deploy, ctxPath=/juddi, vfsUrl=juddi-servi > ce.sar/juddi.war 13:44:48,678 INFO [RegistryServlet] Loading jUDDI > configuration. 13:44:48,694 INFO [RegistryServlet] Resources loaded > from: /WEB-INF/juddi.prope rties 13:44:48,709 INFO [RegistryServlet] > Initializing jUDDI components. 13:44:48,991 INFO [TomcatDeployment] > deploy, ctxPath=/invoker, vfsUrl=http-invo ker.sar/invoker.war > 13:44:49,162 INFO [TomcatDeployment] deploy, ctxPath=/jbossws, > vfsUrl=jbossws.s ar/jbossws-management.war 13:44:49,475 INFO > [RARDeployment] Required license terms exist, view vfszip:/C: > /jboss-5.0.0.GA/server/default/deploy/jboss-local-jdbc.rar/META-INF/ra.xml > 13:44:49,569 INFO [RARDeployment] Required license terms exist, view > vfszip:/C: > /jboss-5.0.0.GA/server/default/deploy/jboss-xa-jdbc.rar/META-INF/ra.xml > 13:44:49,741 INFO [RARDeployment] Required license terms exist, view > vfszip:/C: > /jboss-5.0.0.GA/server/default/deploy/jms-ra.rar/META-INF/ra.xml > 13:44:49,819 INFO [RARDeployment] Required license terms exist, view > vfszip:/C: > /jboss-5.0.0.GA/server/default/deploy/mail-ra.rar/META-INF/ra.xml > 13:44:49,912 INFO [RARDeployment] Required license terms exist, view > vfszip:/C: > /jboss-5.0.0.GA/server/default/deploy/quartz-ra.rar/META-INF/ra.xml > 13:44:50,069 INFO [SimpleThreadPool] Job execution threads will use > class loade r of thread: main 13:44:50,115 INFO [QuartzScheduler] > Quartz Scheduler v.1.5.2 created. 13:44:50,131 INFO [RAMJobStore] > RAMJobStore initialized. 13:44:50,131 INFO [StdSchedulerFactory] > Quartz scheduler 'DefaultQuartzSchedule r' initialized from default > resource file in Quartz package: 'quartz.properties' > > 13:44:50,131 INFO [StdSchedulerFactory] Quartz scheduler version: > 1.5.2 13:44:50,131 INFO [QuartzScheduler] Scheduler DefaultQuartzScheduler_$_NON_CLUS TERED started. 13:44:51,194 INFO > [ConnectionFactoryBindingService] Bound ConnectionManager 'jb > oss.jca:service=DataSourceBinding,name=DefaultDS' to JNDI name > 'java:DefaultDS' 13:44:51,819 WARN [QuartzTimerServiceFactory] sql > failed: CREATE TABLE QRTZ_JOB > _DETAILS(JOB_NAME VARCHAR(80) NOT NULL, JOB_GROUP VARCHAR(80) NOT NULL, DESCRIPT ION VARCHAR(120) NULL, JOB_CLASS_NAME VARCHAR(128) NOT > NULL, IS_DURABLE VARCHAR( 1) NOT NULL, IS_VOLATILE VARCHAR(1) NOT > NULL, IS_STATEFUL VARCHAR(1) NOT NULL, R EQUESTS_RECOVERY VARCHAR(1) > NOT NULL, JOB_DATA BINARY NULL, PRIMARY KEY (JOB_NAM E,JOB_GROUP)) > 13:44:51,912 INFO [SimpleThreadPool] Job execution threads will use > class loade r of thread: main 13:44:51,928 INFO [QuartzScheduler] > Quartz Scheduler v.1.5.2 created. 13:44:51,928 INFO [JobStoreCMT] > Using db table-based data access locking (synch ronization). > 13:44:51,944 INFO [JobStoreCMT] Removed 0 Volatile Trigger(s). > 13:44:51,944 INFO [JobStoreCMT] Removed 0 Volatile Job(s). > 13:44:51,944 INFO [JobStoreCMT] JobStoreCMT initialized. 13:44:51,944 > INFO [StdSchedulerFactory] Quartz scheduler 'JBossEJB3QuartzSchedu > ler' initialized from an externally provided properties instance. > 13:44:51,959 INFO [StdSchedulerFactory] Quartz scheduler version: > 1.5.2 13:44:51,959 INFO [JobStoreCMT] Freed 0 triggers from 'acquired' / 'blocked' st ate. 13:44:51,975 INFO [JobStoreCMT] > Recovering 0 jobs that were in-progress at the time of the last > shut-down. 13:44:51,975 INFO [JobStoreCMT] Recovery complete. > 13:44:51,975 INFO [JobStoreCMT] Removed 0 'complete' triggers. > 13:44:51,975 INFO [JobStoreCMT] Removed 0 stale fired job entries. > 13:44:51,990 INFO [QuartzScheduler] Scheduler > JBossEJB3QuartzScheduler_$_NON_CL USTERED started. 13:44:52,381 INFO > [ServerPeer] JBoss Messaging 1.4.1.GA server [0] started 13:44:52,569 > INFO [QueueService] Queue[/queue/DLQ] started, fullSize=200000, pa > geSize=2000, downCacheSize=2000 13:44:52,584 INFO [QueueService] > Queue[/queue/ExpiryQueue] started, fullSize=20 0000, pageSize=2000, > downCacheSize=2000 13:44:52,709 INFO [ConnectionFactory] Connector > bisocket://127.0.0.1:4457 has l easing enabled, lease period 10000 > milliseconds 13:44:52,709 INFO [ConnectionFactory] > org.jboss.jms.server.connectionfactory.Co nnectionFactory@1a8ac5e > started 13:44:52,725 WARN [ConnectionFactoryJNDIMapper] > supportsFailover attribute is t rue on connection factory: > jboss.messaging.connectionfactory:service=ClusteredCo nnectionFactory > but post office is non clustered. So connection factory will *no t* > support failover 13:44:52,725 WARN [ConnectionFactoryJNDIMapper] > supportsLoadBalancing attribute is true on connection factory: > jboss.messaging.connectionfactory:service=Cluste redConnectionFactory > but post office is non clustered. So connection factory wil l *not* > support load balancing 13:44:52,740 INFO [ConnectionFactory] > Connector bisocket://127.0.0.1:4457 has l easing enabled, lease period > 10000 milliseconds 13:44:52,740 INFO [ConnectionFactory] > org.jboss.jms.server.connectionfactory.Co nnectionFactory@1d43178 > started 13:44:52,740 INFO [ConnectionFactory] Connector > bisocket://127.0.0.1:4457 has l easing enabled, lease period 10000 > milliseconds 13:44:52,756 INFO [ConnectionFactory] > org.jboss.jms.server.connectionfactory.Co nnectionFactory@52728a > started 13:44:53,084 INFO [ConnectionFactoryBindingService] Bound > ConnectionManager 'jb > oss.jca:service=ConnectionFactoryBinding,name=JmsXA' to JNDI name > 'java:JmsXA' 13:44:53,225 INFO [TomcatDeployment] deploy, ctxPath=/, > vfsUrl=ROOT.war 13:44:53,553 INFO [TomcatDeployment] deploy, > ctxPath=/jmx-console, vfsUrl=jmx-c onsole.war 13:44:53,975 INFO > [TomcatDeployment] deploy, ctxPath=/TestService, vfsUrl=TestS > erviceEAR.ear/TestService.war 13:44:55,662 INFO [JBossASKernel] > Created KernelDeployment for: myE-ejb.jar 13:44:55,709 INFO > [JBossASKernel] installing bean: jboss.j2ee:jar=myE-ejb.jar,n > ame=RPSService,service=EJB3 13:44:55,725 INFO [JBossASKernel] with > dependencies: 13:44:55,725 INFO [JBossASKernel] and demands: > 13:44:55,725 INFO [JBossASKernel] > jboss.ejb:service=EJBTimerService 13:44:55,725 INFO [JBossASKernel] > and supplies: 13:44:55,725 INFO [JBossASKernel] > jndi:RPSService/remote 13:44:55,725 INFO [JBossASKernel] Added > bean(jboss.j2ee:jar=myE-ejb.jar,name=RP SService,service=EJB3) to > KernelDeployment of: myE-ejb.jar 13:44:56,772 INFO > [SessionSpecContainer] Starting jboss.j2ee:jar=myE-ejb.jar,na > me=RPSService,service=EJB3 13:44:56,803 INFO [EJBContainer] STARTED > EJB: com.monz.rpz.RPSService ejbName: RPSService 13:44:56,819 INFO > [JndiSessionRegistrarBase] Binding the following Entries in G lobal > JNDI: > > > 13:44:57,381 INFO [DefaultEndpointRegistry] register: > jboss.ws:context=myE-ejb, endpoint=RPSService 13:44:57,428 INFO > [DescriptorDeploymentAspect] Add Service id=RPSService > address=http://127.0.0.1:8080/myE-ejb/RPSService > implementor=com.monz.rpz.RPSService > invoker=org.jboss.wsf.stack.cxf.InvokerEJB3 mtomEnabled=false > 13:44:57,459 INFO [DescriptorDeploymentAspect] JBossWS-CXF > configuration genera ted: > file:/C:/jboss-5.0.0.GA/server/default/tmp/jbossws/jbossws-cxf1864137209199 > 110130.xml 13:44:57,569 INFO [TomcatDeployment] deploy, ctxPath=/myE-ejb, vfsUrl=myE-ejb.j ar 13:44:57,709 WARN [config] > Unable to process deployment descriptor for context '/myE-ejb' > 13:44:59,334 INFO [Http11Protocol] Starting Coyote HTTP/1.1 on > http-127.0.0.1-8 080 13:44:59,397 INFO [AjpProtocol] Starting Coyote > AJP/1.3 on ajp-127.0.0.1-8009 13:44:59,459 INFO [ServerImpl] JBoss > (Microcontainer) [5.0.0.GA (build: SVNTag= JBoss_5_0_0_GA > date=200812041714)] Started in 1m:21s:233ms But Still I cant connect to It when I Type my IP address in my browser thanks

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  • how to apply jquery ui draggable more than one time to same element

    - by Nuwan Chathuranga
    How can I apply jquery ui draggable or resizable more than one time to same element? For example: <div style="height: 50px; left: 216px; position: absolute; top: 64px; width: 444px; z-index: 1; class="test-12 ui-resizable ui-draggable" id="div-77"> <div class="ui-resizable-handle ui-resizable-e" style="z-index: 1000;"></div> <div class="ui-resizable-handle ui-resizable-s" style="z-index: 1000;"></div> <div class="ui-resizable-handle ui-resizable-se ui-icon ui-icon-gripsmall-diagonal-se" style="z-index: 1000;"></div> <div class="ui-rotatable-handle ui-draggable show"></div> </div> I want to apply jquery draggable and resizable to this div (id=div-77) with these other divs thank you

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  • Programming for Multi core Processors

    - by Chathuranga Chandrasekara
    As far as I know, the multi-core architecture in a processor does not effect the program. The actual instruction execution is handled in a lower layer. my question is, Given that you have a multicore environment, Can I use any programming practices to utilize the available resources more effectively? How should I change my code to gain more performance in multicore environments?

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  • Storing and comparing biometric information

    - by Chathuranga Chandrasekara
    I am not sure whether this is the best place to post this. But this is strongly related with programming so decided to put this here. In general we use biometrics in computer applications say for authentication. Lets get 2 examples finger prints and facial recognition. In those cases how we keep the information for comparison. As an example we can't keep a image and process it every time. So what are the methodologies we use to store/determine the similarity in such cases? Are there any special algorithms that designed for that purposes.? (Ex : To return a approximately equal value for a finger print of a certain person every time)

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  • Implementing DRM in enterprise environment

    - by Chathuranga Chandrasekara
    Consider the following Business requirement. There are some templates of documents on a server (MS OFFICE format) The users should be able to edit the documents and save a copy in the server. The users SHOULD NOT be able to save a local copy. i.e That option should be not available. Do I have any feature\hack to do this with MS Office? Think about a solution like google docs without the Download options. It is ideal but needs a lot of effort to implement it.

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  • Word XML to RTF conversion

    - by Chathuranga Chandrasekara
    I am in a need of programatically convert an Word-XML file into a RTF file. It has become a requirement, because of some third party libraries. Any API/Library that can do that? Actually the language is not a problem because I just need to work done. But Java, .NET languages or Python are preferred.

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  • Coding guidelines + Best Practices?

    - by Chathuranga Chandrasekara
    I couldn't find any question that directly applies to my query so I am posting this as a new question. If there is any existing discussion that may help me, please point it out and close the question. Question: I am going to do a presentation on C# coding guidelines but it is not supposed to limit to coding standards. So I have a rough idea but I think I need to address good programing practices. So the contents will be something like this. Basic coding standards - Casing, Formatting etc. Good practices - Usage of Hashset over other data structures, String vs String Builder, String's immutability and using them effectively etc Really I would like to add more good practices (Especially to improve the performance.) So like to hear some more good practices to be used with C#. Any suggestions??? (No need of large descriptions :) Just the idea is sufficient.)

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  • Coding guidelines + Best Practises?

    - by Chathuranga Chandrasekara
    I couldn't find any question that directly applies to my query so I am posting this as a new question. If there is any existing discussion that may help me, please point it out and close the question. Question: I am going to do a presentation on C# coding guidelines but it is not supposed to limit to coding standards. So I have a rough idea but I think I need to address good programing practices. So the contents will be something like this. Basic coding standards - Casing, Formatting etc. Good practices - Usage of Hashset over other data structures, String vs String Builder, String's immutability and using them effectively etc Really I would like to add more good practices (Especially to improve the performance.) So like to hear some more good practices to be used with C#. Any suggestions??? (No need of large descriptions :) Just the idea is sufficient.)

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  • Should DAL always return business objects in MVP

    - by Chathuranga
    In Model View Presenter (MVP) pattern, it is said that our DAL always should returns business models. But let's say if I want to get just a number from database like the last ClientID (the latest clients ID) which is a string, should my DAL method returns a ClientInfo object which has about 10 other fields as well like ClientName, Address etc.? If I want to get a list of business objects from my DAL, is it acceptable to do it as follows or better to get a DataTable from DAL and then in the applications BLL, converts it a List? public List<Employee> GetNewEmployees() { string selectStatement = "SELECT Employee.Emp_ID, Employee.Initials + ' ' + Employee.Surname AS Name,..."; using (SqlConnection sqlConnection = new SqlConnection(db.GetConnectionString)) { using (SqlCommand sqlCommand = new SqlCommand(selectStatement, sqlConnection)) { sqlConnection.Open(); using (SqlDataReader dataReader = sqlCommand.ExecuteReader()) { List<Employee> list = new List<Employee>(); while (dataReader.Read()) { list.Add ( new EpfEtfMaster { EmployeeID = (int) dataReader ["emp_id"], EmployeeName = (string) dataReader ["Name"], AppointmentDate = (DateTime) dataReader["appointment_date"], }); } return list; } } } }

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  • Finding the order of method calls in Eclipse

    - by Chathuranga Chandrasekara
    Suppose I have a big program that consists of hundreds of methods in it. And according to the nature of input the program flow is getting changed. Think I want to make a change to the original flow. And it is big hassle to find call hierarchy/ references and understand the flow. Do I have any solution for this within Eclipse? Or a plugin? As an example, I just need a Log of method names that is in order of time. Then I don't need to worry about the methods that are not relevant with my "given input" Update : Using debug mode in eclipse or adding print messages are not feasible. The program is sooooo big. :)

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  • Dynamic expansion of a Crystal report...

    - by Chathuranga Chandrasekara
    I have a crystal report consisting of several pages. Each page consists of a several fields that are populated from database. Suppose the following example : Name : aaaaaa Education Background:bbbbbbb Age:cc In my case the Education Background's details (bbbbbbb here) may consist of several words or several pages. If I set a large space for it, it will waste a big space on report (Yes. May be a paper) in a case of short answer. How can I eliminate this problem? Does crystal reports provide a way to dynamically expand the space?

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  • Finding the actual runtime call tree of a Java Program

    - by Chathuranga Chandrasekara
    Suppose I have a big program that consists of hundreds of methods in it. And according to the nature of input the program flow is getting changed. Think I want to make a change to the original flow. And it is big hassle to find call hierarchy/ references and understand the flow. Do I have any solution for this within Eclipse? Or a plugin? As an example, I just need a Log of method names that is in order of time. Then I don't need to worry about the methods that are not relevant with my "given input" Update : Using debug mode in eclipse or adding print messages are not feasible. The program is sooooo big. :)

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  • Hex Decompilers for PIC

    - by Chathuranga Chandrasekara
    I've faced to a problem with a PIC Micro controller. I have a micro-controller programmed by me long time ago and I lost the relevant source code and the schematic diagrams. Now I need to invert the value of a port. I can do this using some NOT gates but it is a big hassle to do so. or alternatively I will need to write the whole program back. I don't expect to see the code back in PIC C or MikroC. Having an understandable assembly code would be sufficient. So do anyone has any experience on a good HEX decompiler that I can use for this purpose? Any comments based on your experience? :)

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  • What is the best method to write user "log files" of an android application to a file in a remote server or a table in a remote database?

    - by Samitha Chathuranga
    I am creating a multi user android application and it is connected to a php web service in a remote server and to a remote database via that web service. I want to keep a track of all the important activities done by the users. For an example if a user logged in to the app and changed his profile details and then logged out, a brief description of what he has done should be recorded(with time) somewhere. So then the admin of the system can see what the users are doing. So I think it is better to use log cat files and then flush all those data to a unique file in the server or a table in the database, when the user logs out or exists from his account. If it is appropriate How to do it?

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  • Facebook like button not going back side on the fixed div

    - by Lahiru Chathuranga
    I added a Facebook like button to my website.My website has a fixed div on top of the page(blue color div in the image). The like button is below that(in a div which can scroll) My problem is when the page is scroll down the like button comes on top of the fixed div(blue color).I want to scroll it from the backside of the div.How can I do that? There are couple of screenshots I added Before Scroll After Scroll Here is my code of the fixed div <script type="text/javascript"> function got_to_signup(){ window.location.href = "view/policy"; } </script> <div id="fb-root"></div> <script>(function(d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) return; js = d.createElement(s); js.id = id; js.src = "//connect.facebook.net/en_GB/all.js#xfbml=1&appId=368003049941951"; fjs.parentNode.insertBefore(js, fjs); }(document, 'script', 'facebook-jssdk'));</script> <div style="width:100%;background-color:#0094d6;" > <div id="dd" style="background-color:#0094d6; width:100%; height:75px;position:fixed; " class="center "><div id="a" style="width:1010px; height:75px; background-color:#000000;background:url(xx.png); background-repeat:no-repeat; font-family:Arial, Helvetica, sans-serif; font-size:11px; color:#003; " class="inner div_border"> <table width="1010" border="0" > <tr > <td width="15%" rowspan="2"><a href="" style="cursor:pointer; cursor:hand;"><div style="width:200px; height:50px;background-color:none;"></div></a></td> <td width="22%" height="14">&nbsp;</td> <td width="5%">&nbsp;</td> <td width="5%">&nbsp;</td> <td width="28%">&nbsp;</td> <td width="2%">&nbsp;</td> <td width="23%">&nbsp;</td> </tr> <tr> <td colspan="4"> </td> <td colspan="2"><span style="float: right; " ><div style="background-color:#006d9e;border-radius:3px; width:250px; height:34px; display: table; vertical-align: middle; color:#FFF; "> <table width="100%" border="0" > <tr > <td width="43%" style="text-align:center"> Start to bump !</td> <td width="29%"><div id='basic-modal'><span style="float: right; " ><input name="login_btn" type="button" class="login_button basic" id="login_btn" value="Sign in" /></span></div></td> <td width="28%"><span style="float: right; " ><form id="form_reg" method="post"><input name="register_btn" type="button" class="register_button" id="register_btn" value="Sign up" onclick="got_to_signup()"/></form></span></td> </tr> </table> </div></span></td> </tr> <tr> <td>&nbsp;</td> <td>&nbsp;</td> <td>&nbsp;</td> <td>&nbsp;</td> <td>&nbsp;</td> <td>&nbsp;</td> <td style="color:#FFF; font:Arial, Helvetica, sans-serif; font-size:9px; text-align:right;"> Beta Version </td> </tr> </table> </div></div></div> here is my facebook like button code </script> <div id="fb-root"></div> <script>(function(d, s, id) { var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) return; js = d.createElement(s); js.id = id; js.src = "//connect.facebook.net/en_GB/all.js#xfbml=1&appId=368003049941951"; fjs.parentNode.insertBefore(js, fjs); }(document, 'script', 'facebook-jssdk'));</script> <td height="21" colspan="2"> <table width="187" style="margin-left:3px;font-size:1px;background-image:url(share_back.png);background-repeat:no-repeat;border-radius:3px;" > <!--tweeter button--> <tr><td width="71"><a href="https://twitter.com/bump_lk" class="twitter-follow-button" data-show-count="false" style="float:right;">Follow @bump_lk</a> <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script></td> <!--facebook like button--> <td width="48"><div class="fb-like" data-href="https://www.facebook.com/Bump.lk" data-send="false" data-layout="button_count" data-width="10" data-show-faces="false" style="position:relative;"></div> </td></tr></table></td> <td>&nbsp;</td> <td>&nbsp;</td> <td >

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  • How to deal with class composition when components cannot be accessed from the outside?

    - by Chathuranga
    For example if I say I have three classes A, B, and C where B and C have a composition relation ship with A. That means the life of B and C is handled by A, and also B and C cannot access directly from the outside. For some reason my DataService class needs to return objects of B and C as It cant return a object of A as B and C cannot be initialized at the same time. (to be able to initializeC you have to initializeB first). So that I'm returning DataTables from DataService and then inside the class A those data tables are converted to B / C objects. If B and C objects cannot be initialized at the same time is it valid to say that B and C have a composition relationship with A? If its composition is it must to generate A with B and C inside? What is the proper way to handle this sort of a problem? EDIT: Following code explains the way I'm doing it now with DataTables. Example: class A { private List<B> B; private List <C> C; public A() { B= new List<B>(); C= new List<C>(); } public List<B> GetB( DataTable dt) { // Create a B list from dt return B; } } class Presenter { private void Show B() { _View.DataGrid = A.GetB(DataService.GetAListOfB()); } } The actual scenario is I have a class called WageInfo and classes Earning and Deduction having a composition relationship in the design. But for you to generate Deductions first you should Generate earnings and should be saved in a table. Then only you can generate deductions for the earnings to calculate balance wages. Also note that these contained classes have a one to many relationship with the containing class WageInfo. So actually WageInfo has a List<Earnings> and List<Deduction> My initial question was, is it ok if my DataService class returns Deductions / Earnings objects (actually lists) not a WageInfo? Still not clear?

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