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• 10.04 Window manager not working

  - by jackg

  Using an old mx200 128Mb AGP card. Log in ok. Sometimes the top and bottom bars do not appear, sometimes one sometimes both sometimes none. The menus on firefox/thunderbird and others disappear when I move the pointer from the menu heading to the menu itself. I can't play you tube videos, nor pacman, so the world has ended as I know it. If I type sudo metacity --replace in a terminal the window manager seems to work fine. But I don't know how to make this permanent. One option was: System menupreferencessessions In the sessions tab make sure that "automatically save changes to session" is checked. I don't have a sessions option in the preferences menu. So...? Must be a line of code in a terminal I can use to get round this. I have not upgraded to Ubuntu 11... because the graphics card is so old that I cannot get any decent screen resolutions when I do. On 10.04 I disable the Nvidia driver for the same reason and use 1024x768. Ta

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• Input of mouseclick not always registered in XNA Update method

  - by LordrAider

  I have a problem that not all inputs of my mouse events seem to be registered. The update logic is checking a 2 dimensional array of 10x10 . It's logic for a jewel matching game. So when i switch my jewel I can't click on another jewel for like half a second. I tested it with a click counter variable and it doesn't hit the debugger when i click the second time after the jewel switch. Only if I do the second click after waiting half a second longer. Could it be that the update logic is too heavy that while he is executing update logic my click is happening and he doesn't register it? What am I not seeing here :)? Or doing wrong. It is my first game. My function of the update methode looks like this. public void UpdateBoard() { MouseState currentMouseState; currentMouseState = Mouse.GetState(); if (currentMouseState.LeftButton == ButtonState.Pressed && prevMouseState.LeftButton != ButtonState.Pressed) { UpdatingLogic = true; // this.CheckDropJewels(currentMouseState); //this.CheckMatches(3); //this.RemoveMatches(); this.CheckForSwitch(currentMouseState); this.MarkJewel(currentMouseState); UpdatingLogic = false; //reIndexMissingJewels = true; reIndexSwitchedJewels = true; } prevMouseState = currentMouseState; this.ReIndex(); this.UpdateJewels(); }

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• Ubuntu is not detecting my android device

  - by user3514160

  I am new to android. I have just downloaded and installed android sdk. Now when I run the application from eclipse, my device is not getting detected. I have googled and was brought up with this as my solution, but that also didn't worked. Here's the 51-android.rules SUBSYSTEMS=="usb", ATTR{idProduct}=="0bb4", ATTR{idProduct}=="0c03", MODE="0666", GROUP="plugindev", OWNER="<username>" After that I rebooted my laptop, and ran this command: username@laptopname:~/Android/adt-bundle/sdk/platform-tools$ adb devices The output i get is: * daemon not running. starting it now on port 5037 * * daemon started successfully * List of devices attached ???????????? no permissions EDIT crazydeveloper@crazydeveloper:~$ lsusb Bus 002 Device 004: ID 0bb4:0c03 HTC (High Tech Computer Corp.) Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 003: ID 04f2:b337 Chicony Electronics Co., Ltd Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub crazydeveloper@crazydeveloper:~$ ls -l /dev/bus/usb/004/ ls: cannot access /dev/bus/usb/004/: No such file or directory crazydeveloper@crazydeveloper:~$ Edit: 2 After the answer submitted here's the output that i got: crazydeveloper@crazydeveloper:~$ ls -l /dev/bus/usb/002 total 0 crw-rw-r-- 1 root root 189, 128 May 7 09:45 001 crw-rw-r--+ 1 root root 189, 129 May 7 09:45 002 crw-rw-rw- 1 root plugdev 189, 130 May 7 09:48 003 I am using Micromax Canvas 2.2 A114 - Android Version 4.2.2 Please help me. Thanks.

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• MVC: Nasty __o not declared

  - by xamlnotes

  I ran into this little error with MVC where a bunch of errors showed up about  __o  not declared. This was driving me nuts. Then I ran across this link that solved it. http://stackoverflow.com/questions/750902/how-do-i-get-rid-of-o-is-not-declared So, the solution is to put this into the top of the page like VS does for your site.master. <%-- The following line works around an ASP.NET compiler warning --%> <%: ""%> But what about other pages? Lets say you have a view that’s using your site master and that view is throwing this error. Just add the items into the content section where the error occurs like so: <asp:Content ID="indexContent" ContentPlaceHolderID="MainContent" runat="server"> <%-- The following line works around an ASP.NET compiler warning --%> <%: ""%>   Then add the rest of your code. That seems to fix it and its pretty simple too.

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• Why not commit unresolved changes?

  - by Explosion Pills

  In a traditional VCS, I can understand why you would not commit unresolved files because you could break the build. However, I don't understand why you shouldn't commit unresolved files in a DVCS (some of them will actually prevent you from committing the files). Instead, I think that your repository should be locked from pushing and pulling, but not committing. Being able to commit during the merging process has several advantages (as I see it): The actual merge changes are in history. If the merge was very large, you could make periodic commits. If you made a mistake, it would be much easier to roll back (without having to redo the entire merge). The files could remain flagged as unresolved until they were marked as resolved. This would prevent pushing/pulling. You could also potentially have a set of changesets act as the merge instead of just a single one. This would allow you to still use tools such as git rerere. So why is committing with unresolved files frowned upon/prevented? Is there any reason other than tradition?

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• WUBI installation can no longer boot, UUID disk not found

  - by Joel Heenan

  Yesterday my Wubi/Vista installation was working fine. I shut it down at the train station, all good then when I attempted to boot ubuntu at home I got a message saying the UUID for root could not be found. By booting with the Ubuntu live CD I found that the C:\ubuntu\disks folder stat structure was broken, reported as "??? ??? ??" kinda thing. I booted into Windows, scheduled a CHKDSK, ran that on boot which found some errors and rebooted. Still no dice. I am not stressed because it appears my home directory is still there with all my content so I don't mind re-installing the OS (probably will clean it up some). What is the best path from here to repair the WUBI installation? Is there anything else I should do to repair it? I'm looking at whether the drive is dying now to work out why this occured. Possibly I moved the laptop before shutdown had completed.

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• github team workflow - to fork or not?

  - by aporat

  We're a small team of web developers currently using subversion but soon we're making a switch to github. I'm looking at different types of github workflows, and we're not sure if the whole forking concept in github for each developer is such a good idea for us. If we use forks, I understand each developer will have his own private remote & local repositories. I'm worried it will make pushing changesets hard and too complex. Also, my biggest concern is that it will force each developer to have 2 remotes: origin (which is the remote fork) and an upstream (which is used to "sync" changes from the main repository). Not sure if it's such a easy way to do things. This is similar to the workflow explained here: https://github.com/usm-data-analysis/usm-data-analysis.github.com/wiki/Git-workflow If we don't use forks, we can probably get by fine by using a central repo creating a branch for each task we're working on, and merge them into the development branch on the same repository. It means we won't be able to restrict merging of branches and might be a little messy to have many branches on the central repository. Any suggestions from teams who tried both workflow?

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• Kubuntu not showing eth0

  - by Laurbert515

  I just installed Kubuntu 12.04.2 and do not have an internet connection. I also cannot access the Desktop and only have the terminal. When I enter xlcock I get Error: Can't open display:. I believe this is because I do not have the correct drivers and need to download them ... using the internet which I can't access. So here's what's going on ... ifconfig gives: lo Link ecap: Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:16 errors:0 dropped:0 overrruns:0 frame:0 TX packets:16 errors:0 dropped:0 overrruns:0 frame:0 collisions:0 txqueuelen:0 RX bytes:1296 (1.2 KB) TX bytes:1296 (1.2 KB) wlan0 Link encap: Ethernet HWaddr 68:17:29:58:49:4a UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:16 errors:0 dropped:0 overrruns:0 frame:0 TX packets:16 errors:0 dropped:0 overrruns:0 frame:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) lspci -nnk gives: 07:00.0 Network Controller [0280] Intel Corporation Centrino Wireless-N 2230 [8086:0887] (rev c4) Subsystem: Intel Coporation Centrino Wireless-N 2230 BGN [8086:4062] Kernel driver in use: iwlwifi Kernel modules: iwlwifi 0d:00.0 Ethernet Controller [0200]: Atheros Communications Inc. AR8161 Gigabit Ethernet [1969:1091] (rev 10) Subsystem: Toshiba America Info Systems Device [1179:fa77] I believe this means that it is using the ethernet connection but thinks it is a wireless connection. sudo lshw -class network gives: *-network description: Wireless interface product: Centrino Wireless=N 2230 ... *network UNCLAIMED description: Ethernet controller product: AR8161 Gigabit Ethernet I want to get the internet working so I can fix the GPU driver, etc. but I can't seem to get it working even though I have my ethernet cable plugged in (and I'm sure it is working).

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• Majoring in computer science, but i'm not to sure I'm in the right field [closed]

  - by user74340

  Throught out my high school years and first year in college, I never thought of studying computer science. I studied biology and chemistry during my first year, and I didn't like the research, nor any type of medical professionals. So I took an introductory CS course, and loved the diverse roles this field can have. So I declare CS as my major. I finished first, and second year CS courses. Then now, I'm doing my co-op(intern) as a web developer. During my first and second year, I was always just an average student. My grades is around low B. But I put so much effort to understand my course' materials. I see many brilliants peers who not only excel at what they do, but have the passion. So I always doubt myself if I don't belong in this field. I'm not good at math, I usually get Cs on my math courses. My internship (a corporate developer job) is okay. But doesn't want to work like this after my graduation). Some aspects of CS that I like is HCI. In my experience in programming, and group projects, I enjoyed designing User interface, and thinking of user experience. I'm also thinking of taking some psychology courses.. I would appreciate any criticism, or advices.

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• Keyboard not working 100% after Ubuntu 13.10 upgrade

  - by Marky

  If this has already been asked, my apologies, I did not find it before writing this. So please do point me to the correct page. Anyway, I have this weird issue on my laptop right now. The keyboard is not functioning 100%. This means, I can type my login details to get into Ubuntu. I can type something on Dash. But other than this (on the desktop), no output from the keyboard when using all the other apps - as in I start to type and nothing comes out. The surprising thing is that when I shift to Guest session, the keyboard functions normally. When I shift to another TTY, like Alt+F5, keyboard works normally. This is the first time I've encountered this so far in my use of Linux. Keyboards normally never fail on any of the desktop environments I've used over the years. Any ideas what's happening? Could be the config files on my home is too messy already. I've upgraded this from 11.10 to 13.04, then now 13.10 without a re-install. Works fine so far, until now that I can't do much without a keyboard. Thanks in advance! P.S. Mouse and touchpad works fine.

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• Why not XHTML5?

  - by eegg

  So, HTML5 is the Big Step Forward, I'm told. The last step forward we took that I'm aware of was the introduction of XHTML. The advantages were obvious: simplicity, strictness, the ability to use standard XML parsers and generators to work with web pages, and so on. How strange and frustrating, then, that HTML5 rolls all that back: once again we're working with a non-standard syntax; once again, we have to deal with historical baggage and parsing complexity; once again we can't use our standard XML libraries, parsers, generators, or transformers; and all the advantages introduced by XML (extensibility, namespaces, standardization, and so on), that the W3C spent a decade pushing for good reasons, are lost. Fine, we have XHTML5, but it seems like it has not gained popularity like the HTML5 encoding has. See this SO question, for example. Even the HTML5 specification says that HTML5, not XHTML5, "is the format suggested for most authors." Do I have my facts wrong? Otherwise, why am I the only one that feels this way? Why are people choosing HTML5 over XHTML5?

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• what to learn & practice to be a programmer (not for Job) [closed]

  - by Hanan N.

  I want to be able to write programs (tools) for my own needs, and I want to tell the computer what to do, not to be strict to what other's told it to do. I have a good knowledge of Linux & Windows, I am also have a bit of Python in my head, but I think that I need some guidance on what languages or practices to invest my time into in order to be able to tell the computer what to do. I know there is a lot of posts similar to what I am asking here, but there is a big difference and so I have opened this thread. My goal isn't to work at a company, so I don't need to learn how to work as a team, I don't need to learn as much how to maintain my code nor how to write it nice for others to understand (I know it is important but not for me). I don't want to learn it as a profession, but as a serious hobby (you can call it hacking as long as you know what cracking means), my end goal is to be able to understand other's people code, and to write my own code with a lot of deep knowledge of the ins and outs of the computer system in order to gain from it as much as I can. So in essence my questions are: How can I understand, in depth, computers, in order to exploit them as much as I can? What should I learn? Are there any books that I should read? Is it possible to do this, or do I have to learn every aspect of programming?

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• Audio not working in 12.10

  - by frampy

  I did a clean install of 12.10, when I open Sound Settings in gnome the only device in the list is "Dummy Output", and sound is not working. Sound worked fine out of the box in 12.04 I ran alsamixer, it says my card is "HDA Intel", and chip is "Realtek ALC880". The alsamixer playback output was set to mute at first, unmuting did not fix. I checked out the info at http://www.unixmen.com/2012003-howto-resolve-nosound-problem-on-ubuntu/ as suggested on a similar question, I've done everything there except installing the ubuntu audio dev team driver. Should I try install this? Edit: I've been reading the sound troubleshooting guide at https://help.ubuntu.com/community/SoundTroubleshooting It looks like Ubuntu is finding my audio device correctly. mike@wucade:~$ lspci -v | grep -A7 -i "audio" 00:1b.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller (rev 03) Subsystem: Albatron Corp. Device 2668 Flags: bus master, fast devsel, latency 0, IRQ 40 Memory at d01c0000 (64-bit, non-prefetchable) [size=16K] Capabilities: Kernel driver in use: snd_hda_intel Kernel modules: snd-hda-intel Still stuck as to why this isn't working.

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• Not recognized as operating system on startup

  - by mastabruce

  I am new to Ubuntu and just decided to install it in (on my new lenovo thinkpad) in addition to my windows 7 operating system. Now, whenever I reboot the computer, it only runs window 7. I went (in windows) to Control Pannel ? System ? Advanced Settings ? Startup and Ubuntu is not even listed as a choice for operating system. I tried installing ubuntu again, but now it wants to partition the already partitioned windows folder. I can't figure out how to get Ubuntu, which seems to be installed, to run. I saw on another question here that I could be able to edit my mrb settings using EasyBCD but I can not figure out how to choose ubuntu as an operating system. My disk is already partitioned (seen from the attempted second install) so I'm pretty sure it is on the disk. Basically, how can I get ubuntu to run when I can't choose it as an operating system? Thank you for your help.

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• Eclipse will not install Android Support Package [migrated]

  - by Michael Mossman

  I am an experienced programmer but new to Android, hence using Eclipse for the first time. Unfortunately I cannot get my first project off the ground. I get as far trying to create the project when the following sequence happens. A screen arrives titled 'Install Dependencies' telling me that the required version is 8 and the installed version is 'Not installed' I click on the Install/Upgrade button and something must happen because Android SDK Manager pops up and I get a whole series of 'Fetching:' messages. The next screen asks me to Choose Package to Install and the only option is Android Support Library, revision 10. This doesn't bother me as I presume 10 is better than 8 so I hit the Install button. This is where it all goes wrong as I get a red message saying: File not found: C:\Program Files (X86)\Android\android-sdk\temp\support_r10.zip (Access is denied). Sure enough, when I check this folder, it is empty. Now, something must have happened as as SDK Manager did a whole lot of fetching and must have put these files somewhere. I am quite happy to find them and put them in the correct folder but the question is what is the name of the files that I am looking for?

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• external usb hard drive is not being seen anymore

  - by incrediblehulk

  I think my problem is a little different than several other similar titled questions. Everything started while I was using 10.10. External drive was always recognized and mounted, but the timing of this differed. I mean when I booted, the OS sometimes saw the drive immediately, sometimes after a few minutes, sometimes after hours. Although this was annoying, I tolerated this somehow. Then this problem persisted after I upgraded to 11.04 with a clean install. Afterwards, the drive became totally invisible to the OS. It is not even detected as an usb device anymore. However, there is one thing I can do to make it seen. If I boot to another operating system which can detect the drive, and then boot back to ubuntu, everything is perfect. but this is of course very impractical. To summarize, the usb drive is recognized by ubuntu if and only if another OS in the same computer could recognize it first. I should also say I have not had any problems with the same drive in any other OS or a different computer. My drive is philips with a hitachi hdd inside, has its own power source and any other usb powered drives have never caused this kind of a problem. I've tried almost all recommendations in similar topics but none of them seems to be related to this one. What can I possibly do to fix this?

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• A record not resolving

  - by user1561108

  I have a hosted domain at siteground. On this domain & host I have a subdomain with a wordpress install. I wish to move this blog to another host (hostgator), while keeping the domain with siteground. To do this I created a hosting account at hostgator, got it's ip address and set the A record in siteground's cpanel accordingly: subdomain.example.com 14400 A (ip of hostgator account) Going by this online traceroute tool the records appear to have been updated (over 4 hours ago now) as it now resolves to a theplanet.com server location which hostgator use yet the subdomain is still not resolving from a web browser. The account at hostgator has been setup and is navigable via ip address/~accountname. What's going wrong here? I should add the relevant DNS record at hostgator side looks like this: subdomain.example.com 86400 IN SOA ns483.websitewelcome.com. subdomain.example.com 86400 IN NS ns1.siteground145.com. subdomain.example.com 86400 IN NS ns2.siteground145.com. subdomain.example.com 14400 IN A 74.54.176.3 I'm not sure if the hostgator record should be classed as the SOA record but I don't know enough about it to be sure. Is this the source of the problem?

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• Is my graphics card in use or not?

  - by Lindhe94

  I have a Samsung Series 7 NP730U3E which is running Ubuntu Gnome 13.10. This computer have an Intel Core i5 3337U an AMD Radeon HD 8570M on the inside. Ubuntu 13.10 is said to have driver support for this graphics card, but I am not sure whether or not this is the case. When I check System Settings Details it says "Graphics: Intel® Ivybridge Mobile" and lspci | grep VGA returns VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09). But lshw -c video returns *-display description: Display controller product: Mars [Radeon HD 8730M] vendor: Advanced Micro Devices, Inc. [AMD/ATI] physical id: 0 bus info: pci@0000:01:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: pm pciexpress msi bus_master cap_list rom configuration: driver=radeon latency=0 resources: irq:47 memory:e0000000-efffffff memory:f7e00000-f7e3ffff ioport:e000(size=256) memory:f7e40000-f7e5ffff *-display description: VGA compatible controller product: 3rd Gen Core processor Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 09 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:46 memory:f7800000-f7bfffff memory:d0000000-dfffffff ioport:f000(size=64) What is the case? Is my graphics card is use, or do my laptop have undiscovered powers yet to yield?

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• Wireless does not work 12.10

  - by superkoop

  My primary issue is that my wireless does not work after I installed 12.10. The output to rfkill list all: 5: hci0: Bluetooth Soft blocked: no Hard blocked: no The output to lshw -class network is: *-network description: Ethernet interface product: 88E8040 PCI-E Fast Ethernet Controller vendor: Marvell Technology Group Ltd. physical id: 0 bus info: pci@0000:09:00.0 logical name: eth0 version: 12 serial: 00:21:9b:d6:46:51 size: 100Mbit/s capacity: 100Mbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.30 duplex=full ip=192.168.1.102 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s resources: irq:44 memory:fe8fc000-fe8fffff ioport:de00(size=256) *-network description: Network controller product: BCM4312 802.11b/g LP-PHY vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:0b:00.0 version: 01 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: driver=b43-pci-bridge latency=0 resources: irq:17 memory:fe7fc000-fe7fffff The output to lspci -nn for the pertinent information is: 0b:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01) Thus, it seems the solution would be to run: sudo apt-get install linux-headers-generic sudo apt-get install --reinstall bcmwl-kernel-source sudo modprobe wl However, I do not currently have access to an ethernet connection, as I am currently only able to use verizon wireless 3g internet. Thus, is there a way to set up ICS with a Vista machine so that I can access the internet by using the Vista machine as the host? Or, is it possible to fix this by downloading the important packages in vista and moving them to ubuntu via USB drive?

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• cookie not being sent when requesting JS

  - by Mala

  I host a webservice, and provide my members with a Javascript bookmarklet, which loads a JS sript from my server. However, clients must be logged in, in order to receive the JS script. This works for almost everybody. However, some users on setups (i.e. browser/OS) that are known to work for other people have the following problem: when they request the script via the javascript bookmarklet from my server, their cookie from my server does not get included with the request, and as such they are always "not authenticated". I'm making the request in the following way: var myScript = eltCreate('script'); myScript.setAttribute('src','http://myserver.com/script'); document.body.appendChild(myScript); In a fit of confused desperation, I changed the script page to simply output "My cookie has [x] elements" where [x] is count($_COOKIE). If this extremely small subset of users requests the script via the normal method, the message reads "My cookie has 0 elements". When they access the URL directly in their browser, the message reads "My cookie has 7 elements". What on earth could be going on?!

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• Json.Net Issues: StackOverflowException is thrown when serialising circular dependent ISerializable object with ReferenceLoopHandling.Ignore

  - by keyr

  I have a legacy application that used binary serialisation to persist the data. Now we wanted to use Json.net 4.5 to serialise the data without much changes to the existing classes. Things were working nice till we hit a circular dependent class. Is there any workaround to solve this problem? Sample code as shown below [Serializable] class Department : ISerializable { public Employee Manager { get; set; } public string Name { get; set; } public Department() { } public Department( SerializationInfo info, StreamingContext context ) { Manager = ( Employee )info.GetValue( "Manager", typeof( Employee ) ); Name = ( string )info.GetValue( "Name", typeof( string ) ); } public void GetObjectData( SerializationInfo info, StreamingContext context ) { info.AddValue( "Manager", Manager ); info.AddValue( "Name", Name ); } } [Serializable] class Employee : ISerializable { [NonSerialized] //This does not work [XmlIgnore]//This does not work private Department mDepartment; public Department Department { get { return mDepartment; } set { mDepartment = value; } } public string Name { get; set; } public Employee() { } public Employee( SerializationInfo info, StreamingContext context ) { Department = ( Department )info.GetValue( "Department", typeof( Department ) ); Name = ( string )info.GetValue( "Name", typeof( string ) ); } public void GetObjectData( SerializationInfo info, StreamingContext context ) { info.AddValue( "Department", Department ); info.AddValue( "Name", Name ); } } And the test code Department department = new Department(); department.Name = "Dept1"; Employee emp1 = new Employee { Name = "Emp1", Department = department }; department.Manager = emp1; Employee emp2 = new Employee() { Name = "Emp2", Department = department }; IList<Employee> employees = new List<Employee>(); employees.Add( emp1 ); employees.Add( emp2 ); var memoryStream = new MemoryStream(); var formatter = new BinaryFormatter(); formatter.Serialize( memoryStream, employees ); memoryStream.Seek( 0, SeekOrigin.Begin ); IList<Employee> deserialisedEmployees = formatter.Deserialize( memoryStream ) as IList<Employee>; //Works nicely JsonSerializerSettings jsonSS= new JsonSerializerSettings(); jsonSS.TypeNameHandling = TypeNameHandling.Objects; jsonSS.TypeNameAssemblyFormat = FormatterAssemblyStyle.Full; jsonSS.Formatting = Formatting.Indented; jsonSS.ReferenceLoopHandling = ReferenceLoopHandling.Ignore; //This is not working!! //jsonSS.ReferenceLoopHandling = ReferenceLoopHandling.Serialize; //This is also not working!! jsonSS.PreserveReferencesHandling = PreserveReferencesHandling.All; string jsonAll = JsonConvert.SerializeObject( employees, jsonSS ); //Throws stackoverflow exception Edit1: The issue has been reported to Json (http://json.codeplex.com/workitem/23668)

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• How to convert a DataSet object into an ObjectContext (Entity Framework) object on the fly?

  - by Marcel

  Hi all, I have an existing SQL Server database, where I store data from large specific log files (often 100 MB and more), one per database. After some analysis, the database is deleted again. From the database, I have created both a Entity Framework Model and a DataSet Model via the Visual Studio designers. The DataSet is only for bulk importing data with SqlBulkCopy, after a quite complicated parsing process. All queries are then done using the Entity Framework Model, whose CreateQuery Method is exposed via an interface like this public IQueryable<TTarget> GetResults<TTarget>() where TTarget : EntityObject, new() { return this.Context.CreateQuery<TTarget>(typeof(TTarget).Name); } Now, sometimes my files are very small and in such a case I would like to omit the import into the database, but just have a an in-memory representation of the data, accessible as Entities. The idea is to create the DataSet, but instead of bulk importing, to directly transfer it into an ObjectContext which is accessible via the interface. Does this make sense? Now here's what I have done for this conversion so far: I traverse all tables in the DataSet, convert the single rows into entities of the corresponding type and add them to instantiated object of my typed Entity context class, like so MyEntities context = new MyEntities(); //create new in-memory context ///.... //get the item in the navigations table MyDataSet.NavigationResultRow dataRow = ds.NavigationResult.First(); //here, a foreach would be necessary in a true-world scenario NavigationResult entity = new NavigationResult { Direction = dataRow.Direction, ///... NavigationResultID = dataRow.NavigationResultID }; //convert to entities context.AddToNavigationResult(entity); //add to entities ///.... A very tedious work, as I would need to create a converter for each of my entity type and iterate over each table in the DataSet I have. Beware, if I ever change my database model.... Also, I have found out, that I can only instantiate MyEntities, if I provide a valid connection string to a SQL Server database. Since I do not want to actually write to my fully fledged database each time, this hinders my intentions. I intend to have only some in-memory proxy database. Can I do simpler? Is there some automated way of doing such a conversion, like generating an ObjectContext out of a DataSet object? P.S: I have seen a few questions about unit testing that seem somewhat related, but not quite exact.

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• Magento - Fatal error: Class name must be a valid object or a string

  - by Jason Millward

  I'm having a problem with a Magento installation that I hope someone can help me with. I suddenly started getting the following error message when I accessed the site: Fatal error: Class name must be a valid object or a string in /app/code/core/Mage/Core/Model/Resource.php on line 215 I've searched for someone with a similar issue but not had any luck so i'm stuck and really need to get this resolved Can anyone help?

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• WPF: Xaml, create an observable collection<object> in xaml in Dot Net 4.0

  - by Aran Mulholland

  the web site says you can in dot net 4.0 I cant seem to do it though, what assesmbly references and xmlns' do i need the following does not work xmlns:coll="clr-namespace:System.Collections.ObjectModel;assembly=mscorlib" <coll:ObservableCollection x:TypeArguments="x:Object"> <MenuItem Command="ApplicationCommands.Cut"/> <MenuItem Command="ApplicationCommands.Copy"/> <MenuItem Command="ApplicationCommands.Paste"/> </coll:ObservableCollection>

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• WPF: Xaml, create an observable collection<object> in xaml in .NET 4.0

  - by Aran Mulholland

  the web site says you can in .NET 4.0 I cant seem to do it though, what assesmbly references and xmlns' do i need the following does not work xmlns:coll="clr-namespace:System.Collections.ObjectModel;assembly=mscorlib" <coll:ObservableCollection x:TypeArguments="x:Object"> <MenuItem Command="ApplicationCommands.Cut"/> <MenuItem Command="ApplicationCommands.Copy"/> <MenuItem Command="ApplicationCommands.Paste"/> </coll:ObservableCollection>

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