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• Merging DataTable(s) Column by Column.

  - by Omky

  Hello All, I want to merge two or more DataTables Colum by Column. I am developing C# Windows Application. My use case is below: I have empty data grid in my application. user will drag and drop one column from available column list box into data grid. The data grid will start displaying data for that column. Now, I will drag another column into data grid and now grid should get populated data of two columns. This will repeat till user feels that he has dropped all necessary columns. What is best way to do this? Is there any performance hits with large number of rows typically 1 million? Please help. Thanks, Omky

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• Debugging in netbeans (java)

  - by Daen

  I have been asking this myself for a while. Debugging in visual studio goes smooth. But when i debugg in Netbeans(java) i find myself more then half of the time browsing trough the system code itself. This makes it almost unpossible for me to detect hard to find bugs, cause debugging simply is to tedious and unmanageable. How can this be avoided? Stepping out all the time takes a insane amount of time, and i only wish to debug the code i have written down. I usally add all the controls myself without using any drag and drop for forms if that makes any difference in the total picture. Regards.

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• Non-floated div drops below right floated div in IE9 (and 7)

  - by PVA

  This is a responsive site, (http://www.dermatologypartners.com) with desktop styles first. IE8 handles the pages correctly, though without CSS3 flourishes. But IE9 is dropping my navbar (on left) down, when it is up next to the right floated content in all the other browsers. My navbar is near the end of the HTML because I want it to flow over LAST, below page content but above the footer, in the smartphone version of the site -- which it does. The nav is NOT floated. It just rises to the top left and content is floated to the right. Except in IE9. I don't to have to redo all this, if I can just get an IE9 fix. It's not "float drop" - there's plenty of room available. I'm actually having the same problem in IE7, but I'm not concerned with IE7 -- but why 7 & 9, while 8 is fine? Thanks!

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• Hide annoying VMware hint "To release input, press Ctrl+Alt"

  - by EMP

  I'm running VMWare Workstation 7 on Windows 7 x64. In the guest OS (also Windows 7 x64) I have VMWare Tools installed, but the VMWare Tools service is disabled. I run the VM in full screen mode and the VMWare toolbar at the top often displays this tooltip: To release input, press Ctrl+Alt This tooltip obscures a part of the VM (often the menu of a program I'm using) and it's annoying as hell. Going out of full screen mode and into it again gets rid of it, but only until I mouse over that toolbar and then it reappears! How do I get rid of it, once and for all? I tried adding hints.hideAll = "TRUE" to the .vmx file for the VM and to preferences.ini and neither of those helped.

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• Installing Win7 over PXE through Serva fails on Loading Network Resources

  - by Armand

  Trying to install Win7 OS to a Lenovo E335 with no DVD/CD. I have to do it either over PXE/Network or USB. Although I am able to get passt the installation menu of Serva, it fails on Loading Network Resources ... FAILED No NIC/Driver, ABORTING! This is the only log on the Serva Client PC and nothing on the Serva-server. Would appreciate if someone can tell me how to go pass this error. THe network card works fine, it has already loaded the Windows installation structure on a X: drive on the new laptop. Another detail: I am using a normal Ethernet Cable to connect the PCs. Should this be enough or a crossover cable is a must in this case?

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• Should I enable "Intel NIC DMA Channels"?

  - by javapowered

  I have HP DL360p Gen8 646902-xx1 I'm trying to optimize my config for low latency trading. Should I enable "Intel NIC DMA Channels"? Will that help/affect my system? From HP doc: Added a new ROM Based Setup Utility (RBSU) Advanced Performance Option menu that allows the user to enable Intel NIC DMA Channels (IOAT). This option is disabled by default. When enabled, certain networking devices may see an improvement in performance by utilizing Intel's DMA engine to offload network activity. Please consult documentation from the network adapter to determine if this feature is supported.

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• Annotate pdfs in Firefox on mac-os

  - by Space_C0wb0y

  I have several pdfs stored locally. I have file:/// links to these pdfs in my local TiddlyWiki. When I open one of these, Firefox opens it inline, as expected. Now I want to add annotations to these pdfs as I read them. Since I have not found a way to do this when viewing them inline, I used the open in Preview feature in the context menu. This works fine, but when I want to save, Preview complains that the document is locked. It appears Firefox creates a temporary copy that it gives to preview to open, instead of the real thing. Is there any way to work around this? I want to either be able to save the annotated files from preview or to do the annotations directly in Firefox. I am using Snow-Leopard with Firefox 3.6. Edit I can annotate the pdf just fine when I open them in preview directly.

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• Missing Setup->VLAN on DD-WRT Web GUI?

  - by leeand00

  Please note that I've already posted this question on the dd-wrt forums. I am using "DD-WRT v24-sp2 (08/07/10) std" on a WZR-HP-G300NH model Buffalo router. I've found a number of tutorials online that talk about using Setup-VLAN on the menu system of the GUI interface to configure VLANs, but on my own router, it appears that VLAN configuration is located elsewhere; mainly in the Setup-Networking-VLAN Tagging section of the GUI. I would gladly just use the bash shell to configure the vlans on the router, but every tutorial I read refers to "changing the gui to reflect the changes made in the bash prompt". Are there any tutorials or documentation that you are aware of that that refer to the Setup-Networking-VLAN Tagging GUI portion of my router?

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• Windows 7 Windows XP mode cannot run - it says "Require Hardware Assisted Virtualization"

  - by Jian Lin

  After installing the 2 files for Windows 7 Windows XP mode, the Start Menu now has Windows Virtual PC Windows XP Mode but clicking on the first merely brings out a folder, and clicking on the second brings out a dialog box that says: "Require Hardware Assisted Virtualization" Does that mean the machine cannot support Windows 7 Windows XP mode? I am running Win 7 Ultimate 64 bit edition. This is the dialog box: Update: the computer is an HP TouchSmart, with American Megatrends BIOS v02.61. I looked into the BIOS set up but it is quite simple and dosen't have something for "hardware assisted virtualization". The CPU is Intel Core 2 Duo T5750.

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• How to copy path on a mac?

  - by AngryHacker

  Windows refugee here. On Windows you can easily copy the path and paste it elsewhere to get to the directory. Here is the situation on the Mac. I am in the Finder 20 folders down and I see the file I want. I go to my application and want to open it, so I pick Open Document from the File menu. However, it is exceedingly difficult and time-consuming to get to the place I want. Is there a way to copy the path in the finder and paste it in the File Open dialog of my application?

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• "No bootable device - insert boot disk" after restart on Ubuntu 10.04 b1 update

  - by anjanesh

  I was making an update on my Ubuntu 10.04 beta1 64-bit PC when, after reboot I get PXE-E61: Mediaa test failure, check cable PXE-M0F: Exiting Intel Boot Agent. No bootable device - insert boot disk and press any key How did my boot record disappear ? BIOS Boot Boot Menu Type : Normal Boot Device Priority : <CD/DVD-ROM Drive> <Hard Disk Drive> <Floppy Drive> <Ethernet> Hard Driver Order : No Hard Disk Drive CD/DVD ROM Drive Order : <PT-TSSTcorp CDDV> Removable Drive Order : No Removable Drive Boot to Optical Devices : <Enable> Boot to Removable Devices : <Enable> Boot to Network : <Enable> USB Boot : <Enable>

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• Cannot access Ubuntu 10/04 after reinstalling Windows

  - by meyosef

  I had Windows Vista Home Premium on HP pavilion desktop. I partitioned the disk for Ubuntu and a swap disk partition and then I installed Ubuntu 10.04. When I would start my computer, I would be given a choice to start Windows or Ubuntu. Today I reinstalled Windows, and now the menu has disappeared. I don't see in windows the disk partition that I allocated to Ubuntu, so it means Ubuntu still exist but I can't load it. What can I do ?

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• gparted installed on OpenSuse shows all file system types as greyed out except for hfs

  - by cmdematos.com

  I have had this problem before and fixed it, but I don't recall how I did it and I did not record it (sadness :( ) I have all the requisite commands installed on OpenSuse to support gparted's efforts in creating any of the supported file systems. I recall that the problem was that gparted could not find the commands, in any event all the file systems are greyed out in the context menu except for the legacy hfs partition which only supports < 2gb. Even extfs2-extfs4 are greyed out. How do I fix this?

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• Error: "failed to connect to wpa_supplicant - wpa_ctrl_open no such file or directory" using netcfg with wpa_supplicant

  - by user1576628

  I'm trying to set up netcfg so that I can finish installing Arch Linux (using the instructions from the Beginners' Guide and netcfg) and I passed over what was meant to be a short step. Open wifi-menu, select network, enter password. After multiple attempts, I decided to edit the profile manually, which yielded no improvement. Eventually I decided to use netfcg with the more familiar wpa_supplicant. My /etc/wpa_supplicant.conf file is as follows: network={ ssid="my_ssid" #psk="my_wireless_passcode" psk="my_wireless_passcode_hex" } (Replacing generic names with my actual ssid and psk.) And my /etc/network.d/wpa_suppl file reads: CONNECTION='wireless' DESCRIPTION='A wpa_supplicant configuration based wireless connection' INTERFACE='wlan0' SECURITY='wpa-config' WPA_CONF='/etc/wpa_supplicant.conf' IP='dhcp' My ssid is not hidden, wlan0 is the proper interface, and wpa_supplicant works fine on its own, but using netcfg wpa_suppl, it returns failed to connect to wpa_supplicant - wpa_ctrl_open no such file or directory about twelve times before finally telling me the authentication failed. What can I do to fix this?

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• Microsoft Outlook hangs when switching input language

  - by Hugo

  Hello, I have two keyboard languages, Swedish and Amerikan English. Normally, I switch language by hitting [alt]+[shift] and it works like a charm. However, suddenly Microsoft Outlook has started to hang whenever I try to switch keyboard input language. Whenever i hit [alt]+[shift] or use the menu to switch language Outlook will hang indefinitely not responding. Why? and what can I do about it? I have English Windows 2000 and Outlook 2003 with the Google Search Desktop plugin.

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• Unlock file on Windows Server 2003 without rebooting

  - by BalusC

  We've several Windows Server 2003 machines running, each with its own purposes. There are scheduled jobs which synchronizes some files over SFTP using WinSCP. Very sometimes a newly copied file is left locked in the "inbox" folder without any reason. The machine's own background task (programmed in Java) can't move it to the "processed" folder anymore after processing it. Manually moving it only yields the well known error message Cannot move [filename]: it is being used by another person or program. The only resort is to reboot the machine, but we would of course like to avoid that. Any suggestions? I tried Unlocker which works fine locally at WinXP, but doesn't work at those Win2K3 machines by remote desktop (unlock option doesn't show up in rightclick context menu).

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• how to fix "BusyBox v1.17.1 (Ubuntu 1:1.17.1-10ubuntu1) built-in shell (ash) Enter 'help' for a list of built-in commands?"

  - by Joseph

  So I was using Ubuntu when suddenly the whole thing froze up and I had to reboot. And from that moment on, the system when it is starting up, prompts this little selection menu: GNU GRUB version 1.99~rc1-13ubuntu3 Ubuntu, with Linux 2.6.38-10-generic ubuntu, with Linux 2.6.38-10-generic (recovery mode) Previous Linux versions Memory test (memtest86+) Memory test (memtest86+, serial console 115200) I have chosen all of the available choices but all I get is another command line system that reads: BusyBox v1.17.1 (Ubuntu 1:1.17.1-10ubuntu1) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs): And honestly I can't do anything with it. Does anyone have any idea of what is going on and how I can get Ubuntu to work again?

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• Sony Vaio: Bluetooth problem

  - by Mehper C. Palavuzlar

  I have a Vaio VPCCW21FX with Windows 7 Home Premium. I'm trying to reach the bluetooth settings but to no avail. I could neither switch the bluetooth on nor find the settings for it. I have tried the following: In Start menu, typed bluetooth, found "Bluetooth" in Programs, clicked on it, but there was no response. Checked task manager, there's nothing related bluetooth. Headed for Control Panel, opened Add Devices or Printers, right-clicked on Vaio computer, clicked on Bluetooth Settings, and no response again. What's wrong with my laptop? How can I fix this?

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• Microsoft office communicator 2007 r2 can not send video call to multiple user

  - by mihan007

  so i install ms communication server 2007 r2 and ms office communicator 2007 r2 for three user. so it is possible now to send video call from one person to another. you can use it so way: you choose a person from your contact list and from context menu choose 'send video call'. but when i choose several persons which I want to talk by video this option doesn't exist. (but it should be - http://www.useto.ru/images/01/image015.jpg). what is the problem and how can i tune up communication server or communicator for ability to send video call to several persons?

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• Resetting "HDD Warning???" with Zalman ZM-VE400 external case

  - by 0xC0000022L

  Whenever I turn on (or plug in) the Zalman ZM-VE400 I have, it shows HDD Warning???. Sometimes briefly, sometimes until the Menu button is pressed. The case contains a SSD drive and as far as I understand the warning relates to the S.M.A.R.T. status of which this drive doesn't support all parts. How can I reset the warning so I don't receive it every time when turning on the drive? Firmware reports: V400_01_040_N Here's what I have tried so far: Unplug and plug back in Open the case and remove the SSD, then put it back in Press the button on the back side (cover removed) while plugged in Press the button on the back side (cover removed) while not plugged in USB Connect = Refresh = Enter USB Connect = Safe Removal = Enter Advanced = Umount VHDD = Enter

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• How to consistently enable screen sharing with iChat

  - by Joel

  I am unable to consistently get screen sharing in iChat to work. When I select an online buddy, under the Buddies menu the options "Share my screen with Bob" and "Ask to Share Bob's Screen" are disabled. Sometimes starting a chat with that person will enable the screen sharing but often not. Once its enabled it works fine but I have no idea what the key is to getting it enabled. It seems fairly random when it works. This is over the public internet using Google Talk. Both ends are running OSX 10.5.

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• straight to grub prompt on boot

  - by cheshirekow

  I am very lost. I did a fresh install of Ubuntu 10.04 on a laptop. First reboot was fine. I ran all the recommended upgrades, and now every time I start I get just a grub>_ prompt. No error message, just the prompt, and a little banner at the top saying grub's version and telling me that I have minimal bash style editing. I've tried: 1) Re-installing grub via sudo grub-install sda (There is only one disk with only two partitions, one primary, and one for swap) 2) Changed GRUB_HIDDEN_TIMEOUT=10 GRUB_TIMEOUT=30 GRUB_CMDLINE_LINUX_DEFAULT="rootdelay=90" GRUB_CMDLINE_LINUX="rootdelay=90" in /etc/default/grub. No luck. I can boot with the following: grub> set root=(hd0,1) grub> probe (hd0,1) -u c00fadde-f7e8-45e7-a4da-0235605f756 grub> linux /boot/vmlinuz-2.6.32-21-generic root=UUID=c00fadde-f7e8-45e7-a4da-0235605f756 rootdelay=90 grub> initrd /boot/initrd.img-2.6.32-21-generic grub> boot And then everything seems to be fine from there. From the grub prompt if I try configfile /boot/grub/grub.cfg The screen clears and I get another grub prompt. So, seriously, what could the problem be? edit: Full text of /boot/grub/grub.cfg # # DO NOT EDIT THIS FILE # # It is automatically generated by /usr/sbin/grub-mkconfig using templates # from /etc/grub.d and settings from /etc/default/grub # ### BEGIN /etc/grub.d/00_header ### if [ -s $prefix/grubenv ]; then load_env fi set default="0" if [ ${prev_saved_entry} ]; then set saved_entry=${prev_saved_entry} save_env saved_entry set prev_saved_entry= save_env prev_saved_entry set boot_once=true fi function savedefault { if [ -z ${boot_once} ]; then saved_entry=${chosen} save_env saved_entry fi } function recordfail { set recordfail=1 if [ -n ${have_grubenv} ]; then if [ -z ${boot_once} ]; then save_env recordfail; fi; fi } insmod ext2 set root='(hd0,1)' search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756 if loadfont /usr/share/grub/unicode.pf2 ; then set gfxmode=640x480 insmod gfxterm insmod vbe if terminal_output gfxterm ; then true ; else # For backward compatibility with versions of terminal.mod that don't # understand terminal_output terminal gfxterm fi fi insmod ext2 set root='(hd0,1)' search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756 set locale_dir=($root)/boot/grub/locale set lang=en insmod gettext if [ ${recordfail} = 1 ]; then set timeout=-1 else set timeout=30 fi ### END /etc/grub.d/00_header ### ### BEGIN /etc/grub.d/05_debian_theme ### set menu_color_normal=white/black set menu_color_highlight=black/light-gray ### END /etc/grub.d/05_debian_theme ### ### BEGIN /etc/grub.d/10_linux ### menuentry 'Ubuntu, with Linux 2.6.32-21-generic' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod ext2 set root='(hd0,1)' search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756 linux /boot/vmlinuz-2.6.32-21-generic root=UUID=c00fadde-f7e8-45e7-a4da-0235c605f756 ro rootdelay=90 rootdelay=90 initrd /boot/initrd.img-2.6.32-21-generic } menuentry 'Ubuntu, with Linux 2.6.32-21-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod ext2 set root='(hd0,1)' search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756 echo 'Loading Linux 2.6.32-21-generic ...' linux /boot/vmlinuz-2.6.32-21-generic root=UUID=c00fadde-f7e8-45e7-a4da-0235c605f756 ro single rootdelay=90 echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-2.6.32-21-generic } ### END /etc/grub.d/10_linux ### ### BEGIN /etc/grub.d/20_memtest86+ ### menuentry "Memory test (memtest86+)" { insmod ext2 set root='(hd0,1)' search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756 linux16 /boot/memtest86+.bin } menuentry "Memory test (memtest86+, serial console 115200)" { insmod ext2 set root='(hd0,1)' search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756 linux16 /boot/memtest86+.bin console=ttyS0,115200n8 } ### END /etc/grub.d/20_memtest86+ ### ### BEGIN /etc/grub.d/30_os-prober ### if [ ${timeout} != -1 ]; then if sleep --verbose --interruptible 10 ; then set timeout=0 fi fi ### END /etc/grub.d/30_os-prober ### ### BEGIN /etc/grub.d/40_custom ### # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment. Be careful not to change # the 'exec tail' line above. ### END /etc/grub.d/40_custom ### output of update-grub Generating grub.cfg ... Found linux image: /boot/vmlinuz-2.6.32-21-generic Found initrd image: /boot/initrd.img-2.6.32-21-generic Found memtest86+ image: /boot/memtest86+.bin done contents of /boot total 14280 -rw-r--r-- 1 root root 640617 2010-04-16 09:01 abi-2.6.32-21-generic -rw-r--r-- 1 root root 115847 2010-04-16 09:01 config-2.6.32-21-generic drwxr-xr-x 3 root root 4096 2010-09-08 02:42 grub -rw-r--r-- 1 root root 7968754 2010-09-02 01:49 initrd.img-2.6.32-21-generic -rw-r--r-- 1 root root 160280 2010-03-23 05:37 memtest86+.bin -rw-r--r-- 1 root root 1687378 2010-04-16 09:01 System.map-2.6.32-21-generic -rw-r--r-- 1 root root 1196 2010-04-16 09:03 vmcoreinfo-2.6.32-21-generic -rw-r--r-- 1 root root 4029792 2010-04-16 09:01 vmlinuz-2.6.32-21-generic

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• Turn off Snap and Glue in MS Visio 2007 permanently

  - by Mikhail Kupchik

  Every time I create new drawing document in Microsoft Visio 2007, drawing options "Snap" and "Glue" are turned on by default. I find both of them particularly annoying, so every time I create a new drawing I open "main menu - Tools - Snap & Glue" and turn these options off for that particular document. Is there an option or setting to turn "Snap" and "Glue" off permanently for all new Microsoft Visio 2007 drawing documents? Update: Maybe there's some way to bithack executable file (EXE or DLL) in C:\Program Files\Microsoft Office\Office12?

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• gparted installed on OpenSuse shows all file system types as greyed out except for hfs

  - by cmdematos

  I have had this problem before and fixed it, but I don't recall how I did it and I did not record it (sadness :( ) I have all the requisite commands installed on OpenSuse to support gparted's efforts in creating any of the supported file systems. I recall that the problem was that gparted could not find the commands, in any event all the file systems are greyed out in the context menu except for the legacy hfs partition which only supports < 2gb. Even extfs2-extfs4 are greyed out. How do I fix this?

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• How to consistently enable screen sharing with iChat

  - by Joel

  I am unable to consistently get screen sharing in iChat to work. When I select an online buddy, under the Buddies menu the options "Share my screen with Bob" and "Ask to Share Bob's Screen" are disabled. Sometimes starting a chat with that person will enable the screen sharing but often not. Once its enabled it works fine but I have no idea what the key is to getting it enabled. It seems fairly random when it works. This is over the public internet using Google Talk. Both ends are running OSX 10.5.

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