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  • Event-Driven Debugging

    - by Brian Donahue
    Most application troubleshooting involves getting an error, analyzing the error message, and at worst, attaching a debugger to work out the real cause. What is not really covered is how to troubleshoot an applicaiton that is not errant, but is having a performance issue, and more than likely, in the middle of the night when you are snug in your bed, sawing logs. What you need is an ever-vigilant cyborg who never sleeps to sit in front of your server all night, but as SkyNet is not live yet, you can settle for the next-best thing. Windows provides performance counters and alerts that can tell you when an applicaiton reaches an unacceptable threshold of naughty behavior, but although it can tattle on your brainchild, it won't be the child psychiatrist that you need to tell you why he's pulling your server's pigtails and pulling faces at the teacher. What you need is to plug a debugger into performance monitor and have it tell you what's going on with your applicaiton at the time. For this purpose, I'd used Microsoft's MDbgEngine as the basis for an applicaiton that will dump a program's stacks, I call it Application Slicer Dicer Wonder Dumper Super Cyborg, or StackOMatic for short. StackOMatic can look at a program's behavior and tell you if the stacks are not moving, but it can also work on the command-line to dump all managed methods on the stack at will. Now that there is a command you can use to dump the stacks, all you need to do is politely tell Windows to run it when you're displeased with your creation as it's trashing the CPU of your server at 3 AM. The first step is to create a scheduled task to tell StackOMatic to dump your applicaiton. Start Task Scheduler and right-click Task Scheduler Library and then Create Task. For this exercise I'm creating a task that will dump the Red Gate SQL Monitor Base Monitor Service. In the Actions tab, I enter the path to StackOMatic and use the arguments to log the stack dump to a file: /PN:RedGate.Response.Engine.Alerting.Base.Service /OUT:c:\users\administrator\MonitorLog.txt Next, I go into Windows Server 2008's Reliability and Performance Monitor and add a new Data Collector Set. This set will produce an alert on the %Processor Time for the service. When the processor time breaches 50%, it will run the StackDumpBaseService task I created. Whenever the service misbehaves, it will append to the log file. Now when I go to work in the morning, I can see what the service was doing when it overloaded the processor and take action.

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  • AWStats is processing log files but does not display them

    - by Wouter
    I've setup AWStats on my VPS to get some more insight into the traffic coming to my site. As instructed I ran a manual build/update which ran fine: sudo -u www-data ./awstats.pl -config=xxxx.com Create/Update database for config "/etc/awstats/awstats.xxxx.com.conf" by AWStats version 6.9 (build 1.925) From data in log file "/usr/share/doc/awstats/examples/logresolvemerge.pl /var/www/xxxx.com/logs/*-access.log |"... Phase 1 : First bypass old records, searching new record... Searching new records from beginning of log file... Phase 2 : Now process new records (Flush history on disk after 20000 hosts)... Warning: awstats has detected that some hosts names were already resolved in your logfile /usr/share/doc/awstats/examples/logresolvemerge.pl /var/www/xxxx.com/logs/*-access.log |. If DNS lookup was already made by the logger (web server), you should change your setup DNSLookup=1 into DNSLookup=0 to increase awstats speed. Jumped lines in file: 0 Parsed lines in file: 814 Found 0 dropped records, Found 0 corrupted records, Found 0 old records, Found 814 new qualified records. It also produced the file in the DatDir: /var/lib/awstats/awstats052010.xxxx.com.txt which contains what I would expect. BUT when I visit: xxxx.com/awstats/awstats.pl it tells me Last Update: Never updated (See 'Build/Update' on awstats_setup.html page) and the rest of the page is blank. I'm pretty sure I set it up correctly but now I cannot figure out why this is happening. Hopefully someone smarter then me can help me. Thank you in advanced.

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  • GhettoVCB.sh log is wrong

    - by Michael
    2010-02-25 16:03:02 -- info: CONFIG - VM_BACKUP_ROTATION_COUNT = 2 2010-02-25 16:03:02 -- info: CONFIG - DISK_BACKUP_FORMAT = thin 2010-02-25 16:03:02 -- info: ============================== ghettoVCB LOG START ============================== 2010-02-25 16:03:02 -- info: CONFIG - ADAPTER_FORMAT = buslogic 2010-02-25 16:03:02 -- info: CONFIG - POWER_VM_DOWN_BEFORE_BACKUP = 0 2010-02-25 16:03:02 -- info: CONFIG - ENABLE_HARD_POWER_OFF = 0 2010-02-25 16:03:02 -- info: CONFIG - VM_BACKUP_VOLUME = /vmfs/volumes/nfs_storage_backup/vm1 2010-02-25 16:03:02 -- info: CONFIG - ITER_TO_WAIT_SHUTDOWN = 3 2010-02-25 16:03:02 -- info: CONFIG - VM_BACKUP_ROTATION_COUNT = 2 2010-02-25 16:03:02 -- info: CONFIG - POWER_DOWN_TIMEOUT = 5 2010-02-25 16:03:02 -- info: CONFIG - DISK_BACKUP_FORMAT = thin 2010-02-25 16:03:02 -- info: CONFIG - SNAPSHOT_TIMEOUT = 15 2010-02-25 16:03:02 -- info: CONFIG - ADAPTER_FORMAT = buslogic 2010-02-25 16:03:02 -- info: CONFIG - LOG_LEVEL = info 2010-02-25 16:03:02 -- info: CONFIG - BACKUP_LOG_OUTPUT = /tmp/ghettoVCB.log 2010-02-25 16:03:02 -- info: CONFIG - POWER_VM_DOWN_BEFORE_BACKUP = 0 2010-02-25 16:03:02 -- info: CONFIG - ENABLE_HARD_POWER_OFF = 0 2010-02-25 16:03:02 -- info: CONFIG - ITER_TO_WAIT_SHUTDOWN = 3 2010-02-25 16:03:02 -- info: CONFIG - VM_SNAPSHOT_MEMORY = 0 2010-02-25 16:03:02 -- info: CONFIG - VM_SNAPSHOT_QUIESCE = 0 2010-02-25 16:03:02 -- info: CONFIG - POWER_DOWN_TIMEOUT = 5 2010-02-25 16:03:02 -- info: CONFIG - VMDK_FILES_TO_BACKUP = all 2010-02-25 16:03:02 -- info: CONFIG - SNAPSHOT_TIMEOUT = 15 2010-02-25 16:03:02 -- info: CONFIG - LOG_LEVEL = info 2010-02-25 16:03:02 -- info: CONFIG - BACKUP_LOG_OUTPUT = /tmp/ghettoVCB.log 2010-02-25 16:03:02 -- info: CONFIG - VM_SNAPSHOT_MEMORY = 0 2010-02-25 16:03:02 -- info: CONFIG - VM_SNAPSHOT_QUIESCE = 0 2010-02-25 16:03:02 -- info: CONFIG - VMDK_FILES_TO_BACKUP = all 2010-02-25 16:03:13 -- info: Initiate backup for VM1 2010-02-25 16:03:13 -- info: Initiate backup for VM1 2010-02-25 16:03:13 -- info: Creating Snapshot "ghettoVCB-snapshot-2010-02-25" for VM1 2010-02-25 16:03:13 -- info: Creating Snapshot "ghettoVCB-snapshot-2010-02-25" for VM1 Failed to clone disk : The file already exists (39). Destination disk format: VMFS thin-provisioned Cloning disk '/vmfs/volumes/datastore1/machine/VM1.vmdk'... 2010-02-25 16:04:16 -- info: Removing snapshot from VM1 ... Destination disk format: VMFS thin-provisioned Cloning disk '/vmfs/volumes/datastore1/machine/VM1.vmdk'... How can I fix this issue, the backup is working, but the log shows something like 2 back-up's in the exact time?

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  • What causes this logrotate behavior in Puppet?

    - by ujjain
    After running logrotate, Puppet starts writing it's logs into /var/log/puppet/masterhttp.log-20130616. How come it doesn't keep logging in /var/log/puppet/masterhttp.log? It seems normal behavior is renaming the original log-file and start with a clean fresh log-file to start writing in that log file, keeping the other file as a log-archive. [root@puppetmaster puppet]# ls -al total 97520 drwxr-x---. 2 puppet puppet 4096 Jun 16 03:24 . drwxr-xr-x. 12 root root 4096 Jul 1 09:11 .. -rw-r--r--. 1 puppet puppet 0 Jun 16 03:24 masterhttp.log -rw-rw----. 1 puppet puppet 99847187 Jul 1 09:19 masterhttp.log-20130616 [root@puppetmaster init.d]# cat /etc/logrotate.d/puppet /var/log/puppet/*log { missingok notifempty create 0644 puppet puppet sharedscripts postrotate pkill -USR2 -u puppet -f /usr/sbin/puppetmasterd || true [ -e /etc/init.d/puppet ] && /etc/init.d/puppet reload > /dev/null 2>&1 || true endscript } [root@puppetmaster init.d]# How can I make Puppet log to /var/log/puppet/masterhttp.log and not to /var/log/puppet/masterhttp.log-20130616? Even restarting puppet doesn't make it log into /var/log/puppet/masterhttp.log instead of /var/log/puppet/masterhttp.log-20130616.

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  • Windows AD DNS: Event ID 5504

    - by Chris_K
    Two of my AD controllers (both running DNS service) appear to be having a similar issue. Both are throwing lots of events in the DNS events that look like this: Event Type: Information Event Source: DNS Event Category: None Event ID: 5504 Date: 5/24/2010 Time: 11:51:38 AM User: N/A Computer: ALPHA Description: The DNS server encountered an invalid domain name in a packet from 76.74.137.6. The packet will be rejected. The event data contains the DNS packet. That will come with the same event, same time, with a packet from 76.74.137.7 as well. I know this is "Information" not an error, but since it is new and different it bothers me (yes, I fear unexplained change!) Both machines are running Windows 2003 R2 SP2. The DNS servers are not exposed to the internet. Both DNS servers are configured to use OpenDNS for Forwarders. For both servers, this started about a week ago. Any thoughts on: 1) should I be concerned? 2) how can I stop/fix this? To keep it interesting, I have a 3rd AD / DNS box. Same domain, different Active Directory site. Same forwarders, yet doesn't have this issue.

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  • Is it possible to re-cab an Administrative Install Point?

    - by Nathaniel Bannister
    We have Acrobat 8 Pro at work, and our media was painfully out of date. Rather than install all of the machines at 8.0.0 and then do the 6 or 7 consecutive reboots adobe expects you to be ok with I decided I'd integrate the .msp files into the installer. After reading up on it, I figured out the exact patch order that adobe required, extracted my cd to an Administrative install point, and ran the patches against it: msiexec /a AcroPro.msi /p AcrobatUpd810_efgj_incr.msp TARGETDIR="C:\Acrobat8" /log "output.log" msiexec /a AcroPro.msi /p AcrobatUpd811_all_incr.msp TARGETDIR="C:\Acrobat8" /log "output.log" msiexec /a AcroPro.msi /p AcrobatUpd812_all_incr.msp TARGETDIR="C:\Acrobat8" /log "output.log" msiexec /a AcroPro.msi /p AcrobatUpd813_all_incr.msp TARGETDIR="C:\Acrobat8" /log "output.log" msiexec /a AcroPro.msi /p AcrobatUpd816_all_incr.msp TARGETDIR="C:\Acrobat8" /log "output.log" msiexec /a AcroPro.msi /p AcrobatUpd817_all_incr.msp TARGETDIR="C:\Acrobat8" /log "output.log" msiexec /a AcroPro.msi /p AcrobatUpd820_all_incr.msp TARGETDIR="C:\Acrobat8" /log "output.log" msiexec /a AcroPro.msi /p AcrobatUpd822_all_incr.msp TARGETDIR="C:\Acrobat8" /log "output.log" msiexec /a AcroPro.msi /p AcrobatUpd823_all_incr.msp TARGETDIR="C:\Acrobat8" /log "output.log" msiexec /a AcroPro.msi /p AcrobatUpd825_all_incr.msp TARGETDIR="C:\Acrobat8" /log "output.log" msiexec /a AcroPro.msi /p AcrobatUpd826_all_incr.msp TARGETDIR="C:\Acrobat8" /log "output.log" Now I have a AIP that is fully patched to 8.2.6 (Tested working prior to attempting to CAB it), but is absolutely huge (1.2gb) what I would like to do is take the folders within the AIP and put them back into a cab file for the sake of convenience in transferring the files around. I tried the command: cscript "C:\Program Files\Microsoft SDKs\Windows\v7.0\Samples\sysmgmt\msi\scripts\WiMakCab.vbs" AcroPro.msi Data1 /L /C /S Per the guide I was using, while this did produce the cab file I Wanted, however the resulting MSI fails to install with an error 2602: It's been a while since I've done something like this, and it's probably a glaring oversight on my part, but any insight would be much appreciated.

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  • Exchange 2010: Find Move Request Log after move request completes

    - by gravyface
    EDIT: significantly changed my question here to streamline it a bit. I've gone ahead and used 100 as my corrupted item count and ran it from the Exchange Shell. So the trail of tears continues with my SBS 2003 to 2011 migration: all the mailboxes have moved mailbox store from OLDSERVER to NEWSERVER, with the Local Move Requests completing successfully, except for one. What I'd like to do now is review the previous move request log files: when they were in progress, I could right-click Properties Log View Log File, but now that they're completed, that's not available. Nor can I use: Get-MoveRequestStatistics <user> -includereport | fl MoveReport ...as the move request has now completed and it errors out with "couldn't find a move request that corresponds...". Basically what I'd like to do is present the list of baditems to the user so that they're aware of what items didn't come across and if anything important was lost, be able to check their current OST, an archive.pst, etc. to recover it if possible. If this all needs to be wrapped up in a batch Exchange power shell command to pipe the output to log files on disk somewhere, I'm all ears, and would appreciate it for the next migration we do.

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  • Dir all files to output.log, including message "File Not Found"

    - by user316687
    I'm trying to dir a bunch of files with dos command: dir My dir.bat file: dir E:\documentos\57\Asiento\01\"Asiento 3 Modificacion de Estatuto.doc" dir E:\documentos\134\Asiento\01\"File Does Not Exist.doc" dir E:\documentos\55\Asiento\01\"Asiento 5 Padron de Afiliados Segunda Entrega.doc" The second one doesn't exist. Then, when running my bat: C:\myuser>E:\dir.bat > output.log I open output.log and don't find any message about the file that was not found. Output.log : E:\documentos>dir E:\documentos\57\Asiento\01\"Asiento 3 Modificacion de Estatuto.doc" Volume in drive E is New Volume Volume Serial Number is 0027-F7F6 Directory of E:\documentos\57\Asiento\01 20/12/2005 06:41 p.m. 40,960 Asiento 3 Modificacion de Estatuto.doc 1 File(s) 40,960 bytes 0 Dir(s) 17,053,155,328 bytes free E:\documentos>dir E:\documentos\134\Asiento\01\"File Does Not Exist.doc" Volume in drive E is New Volume Volume Serial Number is 0027-F7F6 Directory of E:\documentos\134\Asiento\01 E:\documentos>dir E:\documentos\55\Asiento\01\"Asiento 5 Padron de Afiliados Segunda Entrega.doc" Volume in drive E is New Volume Volume Serial Number is 0027-F7F6 Directory of E:\documentos\55\Asiento\01 08/08/2007 08:33 a.m. 40,960 Asiento 5 Padron de Afiliados Segunda Entrega.doc 1 File(s) 40,960 bytes 0 Dir(s) 17,053,151,232 bytes free Is there any way that output.log shows "File Not Found" message?

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  • Missing access log for virtual host on Plesk

    - by Cummander Checkov
    For some reason i don't understand, after creating a new virtual host / domain in Plesk a few months back, i cannot seem to find the access log. I noticed this when running /usr/local/psa/admin/sbin/statistics The host in question is being scanned Main HTML page is 'awstats.<hostname_masked>-http.html'. Create/Update database for config "/opt/psa/etc/awstats/awstats.<hostname_masked>.com-https.conf" by AWStats version 6.95 (build 1.943) From data in log file "-"... Phase 1 : First bypass old records, searching new record... Searching new records from beginning of log file... Jumped lines in file: 0 Parsed lines in file: 0 Found 0 dropped records, Found 0 corrupted records, Found 0 old records, Found 0 new qualified records. So basically no access logs have been parsed/found. I then went on to check if i could find the log myself. I looked in /var/www/vhosts/<hostname_masked>.com/statistics/logs but all i find is error_log Does anybody know what is wrong here and perhaps how i could fix this? Note: in the <hostname_masked>.com/conf/ folder i keep a custom vhost.conf file, which however contains only some rewrite conditions plus a directory statement that contains php_admin_flag and php_admin_value settings. None of them are related to logging though.

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  • Empty rewrite.log on Windows, RewriteLogLevel is in httpd.conf

    - by ripper234
    I am using mod_rewrite on Apache 2.2, Windows 7, and it is working ... except I don't see any logging information. I added these lines to the end of my httpd.conf: RewriteLog "c:\wamp\logs\rewrite.log" RewriteLogLevel 9 The log file is created when Apache starts (so it's not a permission problem), but it remains empty. I thought there might be a conflicting RewriteLogLevel statement somewhere, but I checked and there isn't. What else could cause this? Could this be caused by Apache not flushing the log file? (I closed it by hitting CTRL-C on the httpd.exe command ... this caused the access logs to be flushed to disk, but still nothing in rewrite.log) My (partial) httpd-vhosts.conf: <VirtualHost *:80> ServerAdmin webmaster@localhost ServerName my.domain.com DocumentRoot c:\wamp\www\folder <Directory c:\wamp\www\folder> Options -Indexes FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all <IfModule mod_rewrite.c> RewriteEngine On RewriteBase / RewriteRule . everything-redirects-to-this.php [L] </IfModule> </Directory> </VirtualHost>

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  • Log and debug/decrypt an windows application's HTTPS traffic

    - by cweiske
    I've got a proprietary windows-only application that uses HTTPS to speak with a (also proprietary, undocumented) web service. To ultimately be able to use the web service's functionality on my linux machines, I want to reverse-engineer the web service API by analyzing the requests sent by the application. Now the question: How can I decrypt and log the HTTPS traffic? I know of several solutions which don't apply in my case: Fiddler is a man-in-the-middle HTTPS proxy which I cannot use since the application doesn't support proxies. Also, I do not (yet) know if it works with self-signed server certificates, which I doubt. Wireshark is able to decrypt SSL streams if you have the server's private certificate, which I don't have. any browser extension since the application is not a browser If I remember correctly, there have been some trojans that capture online banking information by hooking into/replacing the window's crypto API. Since the machine is mine, low level changes are possible. Maybe there is a non-trojan (white-hat) network log application out there which does the same? There is a blackhat presentation with some details available to read. They refer to Microsoft Research Detour for easy API hooking.

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  • Walk me through the Linux log files (please)

    - by Andy
    Hey all, I just tried loading a 2MB file in gedit and it silently died on me. I was wondering if anything might appear in a log file that might help me diagnose this: I checked syslog and found out it segfaulted. While doing this I realised that I don't really know anything about how logging is organised on *nix machines. All I know at the mo is Logs are typically stored in /var/log/... is there anywhere else that I should know about? I'm familiar with application specific logs, such as apache's. I understand that dmesg is the bootup log, and syslog is a general system log... is that right? So would someone mind taking me through the most useful logs? Are the two logs I mention in the final point the only general logs? And what are the funky numbers at the start of lines in dmesg? Seconds since startup? Please include anything in your answers that you think would improve my understanding here and help me track down anomalies! TIA Andy

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  • Windows OS level file open event trigger

    - by john
    Colleagues, I have need to run a script/program on certain basic OS level events. In particular when a file in Windows is opened. The open may be read-only or to edit, and may be initiated by a number of means, either from windows explorer (open or ), be selected from a viewing or editing application from the native file chooser, or drag-n-drop into an editing or viewing application. Further, i need the trigger to "hold" the event from completing the action until the runtime on the program has completed. The event handler program may return a pass state, or fail state. If fail state has been returned, then the event must disallow the initially requested action. Lastly, I need to add to the file in question a property or attribute that will contain metadata that will be used by the above event trigger handler program to make a determination as to the pass/fail condition that will ultimately determine if the user is permitted to open the file. Please note that this is NOT a windows event log situation, but one at the OS level file open event. thanks very much for your help. regards, j

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  • Silverlight 4 Training Kit

    - by ScottGu
    We recently released a new free Silverlight 4 Training Kit that walks you through building business applications with Silverlight 4.  You can browse the training kit online or alternatively download an entire offline version of the training kit.  The training material is structured on teaching how to use the new Silverlight 4 features to build an end to end business application. The training kit includes 8 modules, 25 videos, and several hands on labs. Below is a breakdown and links to all of the content. [In addition to blogging, I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu] Module 1: Introduction Click here to watch this module. In this video John Papa and Ian Griffiths discuss the key areas that the Building Business Applications with Silverlight 4 course focuses on. This module is the overview of the course and covers many key scenarios that are faced when building business applications, and how Silverlight can help address them. Module 2: WCF RIA Services Click here to explore this module. In this lab, you will create a web site for managing conferences that will be the basis for the other labs in this course. Don’t worry if you don’t complete a particular lab in the series – all lab manual instructions are accompanied by completed solutions, so you can either build your own solution from start to finish, or dive straight in at any point using the solutions provided as a starting point. In this lab you will learn how to set up WCF RIA Services, create bindings to the domain context, filter using the domain data source, and create domain service queries. Online Link Download Source Download Lab Document Videos Module 2.1 - WCF RIA Services Ian Griffiths sets up the Entity Framework and WCF RIA Services for the sample Event Manager application for the course. He covers how to set up the services, how the Domain Services work and the role that the DomainContext plays in the sample application. He also reviews the metadata classes and integrating the navigation framework. Module 2.2 – Using WCF RIA Services to Edit Entities Ian Griffiths discusses how he adds the ability to edit and create individual entities with the features built into WCF RIA Services into the sample Event Manager application. He covers data binding fundamentals, IQueryable, LINQ, the DomainDataSource, navigation to a single entity using the navigation framework, and how to use the Visual Studio designer to do much of the work . Module 2.3 – Showing Master/Details Records Using WCF RIA Services Ian Griffiths reviews how to display master/detail records for the sample Event Manager application using WCF RIA Services. He covers how to use the Include attribute to indicate which elements to serialize back to the client. Ian also demonstrates how to use the Data Sources window in the designer to add and bind controls to specific data elements. He wraps up by showing how to create custom services to the Domain Services. Module 3 – Authentication, Validation, MVVM, Commands, Implicit Styles and RichTextBox Click here to visit this module. This lab demonstrates how to build a login screen, integrate ASP.NET authentication, and perform validation on data elements. Model-View-ViewModel (MVVM) is introduced and used in this lab as a pattern to help separate the UI and business logic. You will also learn how to use implicit styling and the new RichTextBox control. Online Link Download Source Download Lab Document Videos Module 3.1 – Authentication Ian Griffiths covers how to integrate a login screen and authentication into the sample Event Manager application. Ian shows how to use the ASP.NET authentication and integrate it into WCF RIA Services and the Silverlight presentation layer. Module 3.2 – MVVM Ian Griffiths covers how to Model-View-ViewModel (MVVM) patterns into the sample Event Manager application. He discusses why MVVM exists, what separated presentation means, and why it is important. He shows how to connect the View to the ViewModel, why data binding is important in this symbiosis, and how everything fits together in the overall application. Module 3.3 –Validation Ian Griffiths discusses how validation of user input can be integrated into the sample Event Manager application. He demonstrates how to use the DataAnnotations, the INotifyDataErrorInfo interface, binding markup extensions, and WCF RIA Services in concert to achieve great validation in the sample application. He discusses how this technique allows for property level validation, entity level validation, and asynchronous server side validation. Module 3.4 – Implicit Styles Ian Griffiths discusses how why implicit styles are important and how they can be integrated into the sample Event Manager application. He shows how implicit styles defined in a resource dictionary can be applied to all elements of a particular kind throughout the application. Module 3.5 – RichTextBox Ian Griffiths discusses how the new RichTextBox control and it can be integrated into the sample Event Manager application. He demonstrates how the RichTextBox can provide editing for the event information and how it can display the rich text for selection and copying. Module 4 – User Profiles, Drop Targets, Webcam and Clipboard Click here to visit this module. This lab builds new features into the sample application to take the user's photo. It teaches you how to use the webcam to capture an image, use Silverlight as a drop target, and take advantage of programmatic access to the clipboard. Link Download Source Download Lab Document Videos Module 4.1 – Webcam Ian Griffiths demonstrates how the webcam adds value to the sample Event Manager application by capturing an image of the attendee. He discusses the VideoCaptureDevice, the CaptureDviceConfiguration, and the CaptureSource classes and how they allow audio and video to be captured so you can grab an image from the capture device and save it. Module 4.2 - Drag and Drop in Silverlight Ian Griffiths demonstrates how to capture and handle the Drop in the sample Event Manager application so the user can drag a photo from a file and drop it into the application. Ian reviews the AllowDrop property, the Drop event, how to access the file that can be dropped, and the other drag related events. He also reviews how to make this work across browsers and the challenges for this. Module 5 – Schedule Planner and Right Mouse Click Click here to visit this module. This lab builds on the application to allow grouping in the DataGrid and implement right mouse click features to add context menu support. Link Download Source Download Lab Document Videos Module 5.1 – Grouping and Binding Ian Griffiths demonstrates how to use the grouping features for data binding in the DataGrid and how it applies to the sample Event Manager application. He reviews the role of the CollectionViewSource in grouping, customizing the templates for headers, and how to work with grouping with ItemsControls. Module 5.2 – Layout Visual States Ian Griffiths demonstrates how to use the Fluid UI animation support for visual states in the ListBox control DataGrid and how it applies to the sample Event Manager application. He reviews the 3 visual states of BeforeLoaded, AfterLoaded, and BeforeUnloaded. Module 5.3 – Right Mouse Click Ian Griffiths demonstrates how to add support for handling the right mouse button click event to display a context menu for the Event Manager application. He demonstrates how to handle the event, show a custom context menu control, and integrate it into the scheduling portion of the application. Module 6 – Printing the Schedule Click here to visit this module. This lab teaches how to use the new printing features in Silverlight 4. The lab walks through the PrintDocument class and the ViewBox control, while showing how to print multiple pages of content using them. Link Download Source Download Lab Document Videos Module 6.1 – Printing and the Viewbox Ian Griffiths demonstrates how to add the ability to print the schedule to the sample Event Manager application. He walks through the importance of the PrintDocument class and its members. He also shows how to handle printing the visual tree and how the ViewBox control can help. Module 6.2 – Multi Page Printing Ian Griffiths expands on his printing discussion by showing how to handle printing multiple pages of content for the sample Event Manager application. He shows how to paginate the content and points out various tips to keep in mind when determining the printable area. Module 7 – Running the Event Dashboard Out of Browser Click here to visit this module. This lab builds a dashboard for the sample application while explaining the fundamentals of the out of browser features, how to handle authentication, displaying notifications (toasts), and how to use native integration to use COM Interop with Silverlight. Link Download Source Download Lab Document Videos Module 7.1 – Out of Browser Ian Griffiths discusses the role of an Out of Browser application for administrators to manage the events and users in the sample Event Manager application. He discusses several reasons why out of browser applications may better suit your needs including custom chrome, toasts, window placement, cross domain access, and file access. He demonstrates the basic technique to take your application and make it work out of browser using the tools. Module 7.2 – NotificationWindow (Toasts) for Elevated Trust Out of Browser Applications Ian Griffiths discusses the how toasts can be used in the sample Event Manager application to show information that may require the user's attention. Ian covers how to create a toast using the NotificationWindow, security implications, and how to make the toast appear as needed. Module 7.3 – Out of Browser Window Placement Ian Griffiths discusses the how to manage the window positioning when building an out of browser application, handling the windows state, and controlling and handling activation of the window. Module 7.4 – Out of Browser Elevated Trust Application Overview Ian Griffiths discusses the implications of creating trusted out of browser application for the Event Manager sample application. He reviews why you might want to use elevated trust, what features is opens to you, and how to take advantage of them. Topics Ian covers include the dynamic keyword in C# 4, the AutomationFactory class, the API to check if you are in a trusted application, and communicating with Excel. Module 8 – Advanced Out of Browser and MEF Click here to visit this module. This hands-on lab walks through the creation of a trusted out of browser application and the new functionality that comes with that. You will learn to use COM Automation, handle the window closing event, set custom window chrome, digitally sign your Silverlight out of browser trusted application, create a silent install option, and take advantage of MEF. Link Download Source Download Lab Document Videos Module 8.1 – Custom Window Chrome for Elevated Trust Out of Browser Applications Ian Griffiths discusses how to replace the standard operating system window chrome with customized chrome for an elevated trusted out of browser application. He covers how it is important to handle close, resize, minimize, and maximize events. Ian mentions that the tooling was not ready when he shot this video, but the good news is that the tooling now supports setting the custom chrome directly from the property page for the Silverlight application. Module 8.2 – Window Closing Event for Out of Browser Applications Ian Griffiths discusses the WindowClosing event and how to handle and optionally cancel the event. Module 8.3 – Silent Install of Out of Browser Applications Ian Griffiths discusses how to use the SLLauncher executable to install an out of browser application. He discusses the optional command line switches that can be set including how the emulate switch can help you emulate the install process. Ian also shows how to setup a shortcut for the application and tell the application where it should look for future updates online. Module 8.4 – Digitally Signing Out of Browser Application Ian Griffiths discusses how and why to digitally sign an out of browser application using the signtool program. He covers what trusted certificates are, the implications of signing (or not signing), and the effect on the user experience. Module 8.5 – The Value of MEF with Silverlight Ian Griffiths discusses what MEF is, how your application can benefit from it, and the fundamental features it puts at your disposal. He covers the 3 step import, export and compose process as well as how to dynamically import XAP files using MEF. Summary As you can probably tell from the long list above – this series contains a ton of great content, and hopefully provides a nice end-to-end walkthrough that helps explain how to take advantage of Silverlight 4 (and all its new features).  Hope this helps, Scott

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  • In-Application Support Made Easier

    - by matt.hicks
    With the availability of Oracle UPK 3.6.1 and Enablement Service Pack 1 for Oracle UPK 3.6.1 (Oracle Support login required for both), there are quite a few changes for content admins to absorb. In addition to the support added for dozens of application releases, patches and new target applications, we've also added features to make implementing and using In-Application Support even easier. First, the old Help Menu Integration Guides have been updated and combined into a single In-Application Support Guide. If you integrate UPK content for user assistance, or if you're interested in doing so, read the new guide! It covers all the integration steps, including a section on the new In-Application Support Configuration Utility. If you've integrated content in multiple languages, or if you've ever had to make configuration changes for UPK Help Integration, then you know how cumbersome it was to manually edit javascript files. No longer! The Player now includes a configuration utility that provides a web browser interface for setting all In-Application Support options. From the main screen, you see a list of applications covered by the published content. Clicking on an application name takes you to the edit configuration screen where you can set all Player options for that application. No more digging through the Player folders to find the right javascript file to edit. No complicated javascript syntax to make changes. And with Enablement Service Pack 1 we've added a new feature we're calling the Tabbed Gateway. The Tabbed Gateway is a top-level navigation bar for Help Integration. And all tabs, links, and text are controlled with the Configuration Utility... I think the Tabbed Gateway is a really cool and exciting feature for content launch. I can't wait to hear how your ideas for how to use it for your content. Let me know in comments or email!

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  • How to Change the Default Application for Android Tasks

    - by Jason Fitzpatrick
    When it comes time to switch from using one application to another on your Android device it isn’t immediately clear how to do so. Follow along as we walk you through swapping the default application for any Android task. Initially changing the default application in Android is a snap. After you install the new application (new web browser, new messaging tool, new whatever) Android prompts you to pick which application (the new or the old) you wish to use for that task the first time you attempt to open a web page, check your text message, or otherwise trigger the event. Easy! What about when it comes time to uninstall the app or just change back to your old app? There’s no helpful pop-up dialog box for that. Read on as we show you how to swap out any default application for any other with a minimum of fuss. Latest Features How-To Geek ETC How to Change the Default Application for Android Tasks Stop Believing TV’s Lies: The Real Truth About "Enhancing" Images The How-To Geek Valentine’s Day Gift Guide Inspire Geek Love with These Hilarious Geek Valentines RGB? CMYK? Alpha? What Are Image Channels and What Do They Mean? How to Recover that Photo, Picture or File You Deleted Accidentally Now Together and Complete – McBain: The Movie [Simpsons Video] Be Creative by Using Hex and RGB Codes for Crayola Crayon Colors on Your Next Web or Art Project [Geek Fun] Flash Updates; Finally Supports Full Screen Video on Multiple Monitors 22 Ways to Recycle an Altoids Mint Tin Make Your Desktop Go Native with the Tribal Arts Theme for Windows 7 A History of Vintage Transformers: Decepticons Edition [Infographic]

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  • How to structure an application that combines WCF and WPF

    - by CiaranG
    I'm in the process of learning how to use WCF (Windows Communication Foundation) to allow a client/server desktop application to communicate. The application's UI will be implemented using WPF, and we will probably use SQL Server for our database. What I'm struggling with, is understanding how to structure such an application. From what I've read, there are three components of a WCF application (which in the examples I've seen have existed as separate projects): A WCF service A WCF service host A WCF service client My question then, is - should these projects solely implement the functionality of sending/receiving data from the client/server? Would it make better sense this way? Would it make sense to create a separate WPF (Windows Presentation Foundation) project to implement the UI for the application? And so, when I need to send/receive data from the client/server, I could simply invoke the operations provided in the WCF projects that I have created? For anyone who has built similar applications previously, perhaps you could explain what worked best for you in terms of structuring your application? For example, if I create a user registration page. When the user clicks the 'Register' button, the client application will need to send the data to the server. In this case, could I just invoke the methods provided in the WCF projects to send the data? Also, what data structures worked best for you when sending/receiving data? My initial thought is sending/receiving XML containing the data. Is this an option that is easy to implement? I realise that answers to this question may well be a matter of opinion - unless there are specific best practices that I'm not aware of. Thank you

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  • Using PreApplicationStartMethod for ASP.NET 4.0 Application to Initialize assemblies

    - by ChrisD
    Sometimes your ASP.NET application needs to hook up some code before even the Application is started. Assemblies supports a custom attribute called PreApplicationStartMethod which can be applied to any assembly that should be loaded to your ASP.NET application, and the ASP.NET engine will call the method you specify within it before actually running any of code defined in the application. Lets discuss how to use it using Steps : 1. Add an assembly to an application and add this custom attribute to the AssemblyInfo.cs. Remember, the method you speicify for initialize should be public static void method without any argument. Lets define a method Initialize. You need to write : [assembly:PreApplicationStartMethod(typeof(MyInitializer.InitializeType), "InitializeApp")] 2. After you define this to an assembly you need to add some code inside InitializeType.InitializeApp method within the assembly. public static class InitializeType {     public static void InitializeApp()     {           // Initialize application     } } 3. You must reference this class library so that when the application starts and ASP.NET starts loading the dependent assemblies, it will call the method InitializeApp automatically. Warning Even though you can use this attribute easily, you should be aware that you can define these kind of method in all of your assemblies that you reference, but there is no guarantee in what order each of the method to be called. Hence it is recommended to define this method to be isolated and without side effect of other dependent assemblies. The method InitializeApp will be called way before the Application_start event or even before the App_code is compiled. This attribute is mainly used to write code for registering assemblies or build providers. Read Documentation I hope this post would come helpful.

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  • Suggestion for setting web application parameters

    - by user40730
    I'm creating a web application on GWT. I'm using MVP pattern with activities and places. I have a xml config file containing some parameters to be used by the application. Content of this xml file is sent to the client using HttpRequest; I'm using a singleton class to hold the information from the xml file. Right now, the application is getting the data when the user starts the application in the home page, that is working well. Now, since I'm using activities and places, a user can bookmark a page and starts the application in any other page (Place). And here comes the problem: Since I'm using some of the information from the xml file to set some ui widgets, I have to check if the xml config file was read and the application already has the parameters (I do this by checking the singleton class). But the xml file is read by using an HttpRequest, so I got errors 'cause the application needs some parameters to initialize some ui widgets, but these parameters aren't ready on time. I was thinking on using an synchronous request to fix the problem, but it seems complicated and not recommendable to do that. So, I'd like to hear some other suggestions. Thanks.

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  • Saving a list of items in Application State ASP.NET MVC ?

    - by Calibre2010
    Hi Guys, I'm having a bit of trouble with knowing how I can save items from a list I have in Application state in the global.asax as- Application[""]. My controller basically takes in some user input, I then pass this to another classes Method as parameters it gets added to a list all the time. This data thats getting added to the list I want to store it, but without using a db. By using Application State. . I have been instantiating this class and calling its method to return the list of items but I dont think Application State is saving it. Here is what I have so far. . protected void Application_Start() { RegisterRoutes(RouteTable.Routes); TimeLineInformation t = new TimeLineInformation(); IList<SWTimeEnvInfoDTO> g = t.getInfo(); Application["AppID"] = g; } ^ Global.asax IList<SWTimeEnvInfoDTO> result = new List<SWTimeEnvInfoDTO>(); public void returnTimeLineInfo(string SWrelease, string EnvName, DateTime SDate, DateTime EDate) { SWTimeEnvInfoDTO myDTO = new SWTimeEnvInfoDTO(); myDTO.softwareReleaseName = SWrelease; myDTO.environmentName = EnvName; myDTO.StartDate = SDate; myDTO.EndDate = EDate; result.Add(myDTO); getInfo(); } public IList<SWTimeEnvInfoDTO> getInfo() { return result; } ^ class im calling The SWTimeEnvInfoDTO type has get and set methods for the data. I am calling the application from a View as well. It works with a string Application["AppID"] = "fgt"; and shows this once i read it from my view.

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  • Service-Oriented Architecture and Web Services

    Service oriented architecture is an architectural model for developing distributed systems across a network or the Internet. The main goal of this model is to create a collection of sub-systems to function as one unified system. This approach allows applications to work within the context of a client server relationship much like a web browser would interact with a web server. In this relationship a client application can request an action to be performed on a server application and are returned to the requesting client. It is important to note that primary implementation of service oriented architecture is through the use of web services. Web services are exposed components of a remote application over a network. Typically web services communicate over the HTTP and HTTPS protocols which are also the standard protocol for accessing web pages on the Internet.  These exposed components are self-contained and are self-describing.  Due to web services independence, they can be called by any application as long as it can be accessed via the network.  Web services allow for a lot of flexibility when connecting two distinct systems because the service works independently from the client. In this case a web services built with Java in a UNIX environment not will have problems handling request from a C# application in a windows environment. This is because these systems are communicating over an open protocol allowed by both environments. Additionally web services can be found by using UDDI. References: Colan, M. (2004). Service-Oriented Architecture expands the vision of web services, Part 1. Retrieved on August 21, 2011 from http://www.ibm.com/developerworks/library/ws-soaintro/index.html W3Schools.com. (2011). Web Services Introduction - What is Web Services. Retrieved on August 21, 2011 from http://www.w3schools.com/webservices/ws_intro.asp

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  • How to Collect Debug Info for Oracle SQL Developer

    - by thatjeffsmith
    In a perfect world, there would be no software bugs. Developers would always test their code. QA would find any scenarios and bugs the developers hadn’t already thought of. Regression tests would be complete and flawless. But alas, we can only afford to pay mere humans here, so we will have bugs from time to time. Or sometimes you are trying to do something the software wasn’t designed for, or perhaps your machine has exhausted it’s resources trying to build the un-buildable. When you run into problems, you will need help. Developers need your help so they can help you. Surprisingly enough, feedback like this isn’t very helpful: Your program isn’t working. How can I make it work? When you are ready to work with us on the SQL Developer OTN forum, you will most likely be asked to run SQL Developer and capture the output from the command console. In case you need help with this, ere’s a step-by-step process you can follow in Windows 7 (should work in XP too.) Open a windows command window Start – Run – CMD Once it’s open, click on the window icon and select ‘Defaults.’ Change the default buffer size to be something bigger, much bigger. Set the CMD window default buffer size HIGHER Note: you only need to do this once. Navigate to your SQL Developer Installation Folder Instead of running the ‘sqldeveloper.exe’ file in the root directory, we are going to go several sub-directories down. Find the ‘bin’ sub-directory and run the ‘sqldeveloper.exe’ there. When you do this, a CMD window will open, and then you’ll see the SQL Developer application load. The SQL Developer bin directory - run the tool from here and get a logging window Use SQL Developer as normal, until it ‘breaks’ or ‘hangs’ Now, you are ready to grab the nitty-gritty information that MIGHT tell the developer what is going wrong or happening in your scenario. Click back into the CMD window Send a Ctrl+Break or a Ctrl+Pause. If you on a newer laptop that doesn’t have this key, be sure to check the ‘Fn’ subset of keys. If you need to map the BREAK or PAUSE buttons, this article might help. You can also try the on-screen keyboard in windows – just type ‘OSK’ in your START – RUN prompt. Copy the logging information from the command window – all of it We need this information, help us get it! Open a case with Oracle Support or Start a Thread on the Forums Or email me. If you’re on my blog reading this, it’s the least I can do to help Now, before you hit ‘Send’ or ‘Post’ or ‘Submit’ – be sure to add a brief description of what you were doing in the application when you ran into the problem. Even if you were doing ‘nothing,’ let us know how many connections you had open, what windows were active, etc. The more you can tell us, the higher your odds go up to getting a quick fix or at least an answer as to what is happening. Also include the following information: The version of SQL Developer you are running The version of the JDK you are using The OS you are using The version of Oracle you are connected to Now, don’t be surprised if you get asked to upgrade to a supported configuration, say ‘version 3.1 and the 1.6 JDK.’ Supporting older versions of software is fun, and while we enjoy a challenge, it may be easier for you to upgrade your way out of the problem at hand.

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  • A Visual Studio tool eliminating the need to rewrite for web and mobile

    - by Visual WebGui
    We have already covered the BYOD requirements that an application developer is faced with, in an earlier blog entry ( How to Bring Your Own Device (BYOD) to a .NET application ). In that entry we emphasized the fact that application developers will need to prepare their applications for serving multiple types of devices on multiple platforms, ranging from the smallest mobile devices up to and beyond the largest desktop devices. The experts prediction is that in the near future we will see that the...(read more)

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  • C# Gui setting control.Enabled to false fires OnClick event???

    - by Daniel
    For some really weird reason when i set the .Enabled property to false on a simple text box on a small GUI, it fires a radio buttons OnClick event and its causing lots of problems. I have breakpointed the txtBox.Enabled = false; and after stepping over OR into it i jump straight to the OnClick event of the radio button control Here is the call stack as that happened: TestGUI.exe!TestGUI.frmMain.radiobuttonClicked(object sender = {Text = "Download Single Episode" Checked = true}, System.EventArgs e = {System.EventArgs}) Line 67 C# System.Windows.Forms.dll!System.Windows.Forms.Control.OnClick(System.EventArgs e) + 0x70 bytes System.Windows.Forms.dll!System.Windows.Forms.RadioButton.OnClick(System.EventArgs e) + 0x27 bytes System.Windows.Forms.dll!System.Windows.Forms.RadioButton.OnEnter(System.EventArgs e = {System.EventArgs}) + 0x3e bytes System.Windows.Forms.dll!System.Windows.Forms.Control.NotifyEnter() + 0x20 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.UpdateFocusedControl() + 0x195 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.AssignActiveControlInternal(System.Windows.Forms.Control value = {Text = "Download Single Episode" Checked = true}) + 0x54 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.ActivateControlInternal(System.Windows.Forms.Control control, bool originator = false) + 0x76 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.SetActiveControlInternal(System.Windows.Forms.Control value = {Text = "Download Single Episode" Checked = true}) + 0x73 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.SetActiveControl(System.Windows.Forms.Control ctl) + 0x33 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.ActiveControl.set(System.Windows.Forms.Control value) + 0x5 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.Select(bool directed, bool forward) + 0x1b bytes System.Windows.Forms.dll!System.Windows.Forms.Control.SelectNextControl(System.Windows.Forms.Control ctl, bool forward, bool tabStopOnly, bool nested, bool wrap) + 0x7b bytes System.Windows.Forms.dll!System.Windows.Forms.Control.SelectNextControlInternal(System.Windows.Forms.Control ctl, bool forward, bool tabStopOnly, bool nested, bool wrap) + 0x4a bytes System.Windows.Forms.dll!System.Windows.Forms.Control.SelectNextIfFocused() + 0x61 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.Enabled.set(bool value) + 0x42 bytes What the hell? It wouldn't have anything to do with the way i subscribe to the events would it? this.radioBtnMultipleDownload.Click += radiobuttonClicked; this.radioBtnSingleDownload.Click += radiobuttonClicked; this.radioCustomUrl.Click += radiobuttonClicked;

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  • MVC Architecture

    Model-View-Controller (MVC) is an architectural design pattern first written about and implemented by  in 1978. Trygve developed this pattern during the year he spent working with Xerox PARC on a small talk application. According to Trygve, “The essential purpose of MVC is to bridge the gap between the human user's mental model and the digital model that exists in the computer. The ideal MVC solution supports the user illusion of seeing and manipulating the domain information directly. The structure is useful if the user needs to see the same model element simultaneously in different contexts and/or from different viewpoints.”  Trygve Reenskaug on MVC The MVC pattern is composed of 3 core components. Model View Controller The Model component referenced in the MVC pattern pertains to the encapsulation of core application data and functionality. The primary goal of the model is to maintain its independence from the View and Controller components which together form the user interface of the application. The View component retrieves data from the Model and displays it to the user. The View component represents the output of the application to the user. Traditionally the View has read-only access to the Model component because it should not change the Model’s data. The Controller component receives and translates input to requests on the Model or View components. The Controller is responsible for requesting methods on the model that can change the state of the model. The primary benefit to using MVC as an architectural pattern in a project compared to other patterns is flexibility. The flexibility of MVC is due to the distinct separation of concerns it establishes with three distinct components.  Because of the distinct separation between the components interaction is limited through the use of interfaces instead of classes. This allows each of the components to be hot swappable when the needs of the application change or needs of availability change. MVC can easily be applied to C# and the .Net Framework. In fact, Microsoft created a MVC project template that will allow new project of this type to be created with the standard MVC structure in place before any coding begins. The project also creates folders for the three key components along with default Model, View and Controller classed added to the project. Personally I think that MVC is a great pattern in regards to dealing with web applications because they could be viewed from a myriad of devices. Examples of devices include: standard web browsers, text only web browsers, mobile phones, smart phones, IPads, IPhones just to get started. Due to the potentially increasing accessibility needs and the ability for components to be hot swappable is a perfect fit because the core functionality of the application can be retained and the View component can be altered based on the client’s environment and the View component could be swapped out based on the calling device so that the display is targeted to that specific device.

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