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• How do you use Linq2Sql in your applications ?

  - by this. __curious_geek

  I'm recently migrating to Linq2Sql and all my future projects would be done in Linq2Sql. Having said that, I researched a lot on how to properly plug-in Linq2Sql in application design. what to put at what layer ? Should I use DTOs over Linq2Sql entities ? I did not find any rock-solid material that really talked about one single thing and everyone had their own opinions and I found all of them justified right from their arguments. I'm looking forward to your ideas on how to integrate/use Linq2Sql in projects. My priority is maintenance[it should be maintenable and when multiple people work on same project] and scalabilty [it should have scope of evolution]. Thanks.

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• Installing Wordpress - constant PHP/MySQL extension appears missing

  - by Driss Zouak

  I've got Win2003 w/IIS6, PHP 5 and MySQL installed. I can confirm PHP is installed correctly because I have a testMe.php that runs properly. When I run the Wordpress setup, I get informed that Your PHP installation appears to be missing the MySQL extension which is required by WordPress. But in my PHP.ini in the DYNAMIC EXTENSIONS section I have extension=php_mysql.dll extension=php_mysqli.dll I verified that mysql.dll and libmysql.dll are both in my PHP directory. I copied my libmysql.dll to the C:\Windows\System32 directory. When I try to run the initial setup for WordPress, I get this answer. I've Googled setting this up, and everything comes down to the above. I'm missing something, but none of the instructions that I've found online seem to cover whatever that is.

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• Windows 2008 DHCP service fails - "...failed to see a directory server for authorization."

  - by ewwhite

  I have a small environment running Windows 2008 R2 where the DHCP service on the domain controller fails every two weeks. The most-visible error is Event ID 1059 and the Event Viewer message is: "The DHCP service failed to see a directory server for authorization." The setup features two domain controller and the usual services and roles (file, print, Exchange). Restarting the service fails for a variety of reasons. I've had the following messages at different times: "Not enough storage is available to complete this operation". "Unable to determine the DHCP Server version for the Server 192.168.x.x" "The DHCP service has detected that it is running on a DC and has no credentials configured for use with Dynamic DNS registrations initiated by the DHCP service." A reboot of the domain controller resolves the issue for ~2 weeks. The systems are virtualized and there are no network connectivity issues. Any ideas what's happening here?

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• Setting up a proxy for FTP - Windows

  - by RadiantHex

  Hi folks, I have 2 windows machines and a server. 1 is my laptop, the other is a workstation that the IP of which is white-listed on the server. The laptop has a dynamic IP, so the IP cannot be white-listed. I would like to be able to perform FTP transfers from my laptop to the server, while using the workstation as a proxy. Both machines are using Windows 7. Is this possible? Help would be amazing!

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• ruby on rails, searchlogic and refactoring

  - by JohnMerlino

  Hey all, I'mt not too familiar with searchlogic plugin for rails (I did view the railscasts but wasn't helpful in relation to the specific code below). Can anyone briefly describe how it is being used in the three methods below? Thanks for any response. def extract_order @order_by = if params[:order].present? field = params[:order].gsub(".", "_") field = field.starts_with?('-') ? 'descend_by_'+field[1..-1] : 'ascend_by_'+field field.to_sym else # Workaround 'searchlogic'.to_sym end end def find_resources @search_conditions = params[:search_conditions] || {} # See http://www.binarylogic.com/2008/11/30/searchlogic-1-5-7-complex-searching-no-longer-a-problem/ @resources = @resource_model.send(@order_by).searchlogic(:conditions => @search_conditions) end def apply_filters f = filter_by f.each do |filter_field| filter_constraints = params[filter_field.to_sym] if filter_constraints.present? # Apply searchlogic's scope @resources.send(filter_field,filter_constraints) end end end

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• Instantiating a context in LINQ to Entities

  - by Jagd

  I've seen two different manners that programmers approach when creating an entity context in their code. The first is like such, and you can find it all over the MSDN code examples: public void DoSomething() { using TaxableEducationEntities context = new TaxableEducationEntities()) { // business logic and whatever else } } The second is to create the context as a private attribute in some class that encapsulates your business logic. So you would have something like: public class Education_LINQ { private TaxableEducationEntities context = new TaxableEducationEntities(); public void DoSomething() { var result = from a in context.luAction select a; // business logic and whatever else } } Which way is more efficient? Assume that you have two methods, one called DoSomething1() and another called DoSomething2(), and both methods incorporate the using statement to open the context and do whatever with it. Were you to call one method after the other, would there be any superfluous overhead going on, since essentially both methods create the context and then clean it up when they're done? As opposed to having just one private attribute that is created when a class object is instantiated, and then in turn cleaned up when the object goes out of scope?

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• Site to Site VPN with ISA 2006 to a Dyndns Hostname?

  - by Klaus

  Hi all, i would like to create a site-to-site VPN between my ISA 2006 and a DLink router on the other side. My ISA got a fixed external IP Address, but the Dlink only has a dynamic one. So it makes use of DynDNS. Every "cheap router" supports making VPNs to a hostname. But in ISA 2006 I have to enter a IP Address in the VPN settings. Is there any way to create the VPN connection to a Hostname? Thank you for answers! Kind regards, Klaus

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• how big should your controllers be in asp.net-mvc

  - by ooo

  i see the new feature of areas in asp.net-mvc 2. it got me thinking. why would i need this? i did some reading on the use cases and it came down to a specific point to me around how big and how broad scope should my controllers should be? should i try to have many little controllers? one big controller? how do people determine the sweet spot for number of controllers? i think mine are maybe too large (which had me questioning areas in the first place as maybe my controller name should really be an area and have a number of smaller controllers)

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• dhcpd won't let go of old leases

  - by Jakobud

  We have DHCP setup to hand out leases in the following range: 192.168.10.190 - 192.168.10.254 (roughly 65 leases) Our small business network only has about 30 computers that use DHCP. We noticed that dhcpd stopped handing out new dynamic leases to the computers, even though there are definitely not 65 computers on the network. Why has it stopped handing out leases? Is it not releasing old un-used leases? How do we tell dhcpd to let go of old leases and start handing out fresh ones again?

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• Google Search Appliance: Limiting Number of Results

  - by senfo

  I am attempting to limit the number of results that are displayed as a result of dynamic result clustering on the Google Search Appliance. I've looked through the XSLT, but I've only come across the following two user-modifiable options: <!-- *** dyanmic result cluster options *** --> <xsl:variable name="show_res_clusters">1</xsl:variable> <xsl:variable name="res_cluster_position">right</xsl:variable> Are there more options that I'm unaware of that I could use to limit the results? Is there another way that I'm missing?

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• Running dnsmasq as an authoritative DNS server

  - by Lord Loh.

  I am trying to implement a dynamic dns service for my computers. I have pointed h.lohray.com to my EC2 instance in the NS record of lohray.com and have installed dnsmasq on that system and have made sure to unblock the firewall port. For now, I have statistically added an entry on my /etc/hosts file. 129.118.19.163 i7.h.lohray.com however, i7.h.lohray.com does not resolve correctly with nslookup or dig :-( This is the only time I could have this resolved (online nslookup) - 50.19.103.190 is the IP address of the EC2 instance where dnsmasq is running. Where could I have gone wrong?

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• ISC Bind support for GSS-TSIG DDNS Updates?

  - by netlinxman

  First, has anyone EVER configured ISC bind 9.5.0 OR greater with support for GSS-TSIG Dynamic DNS Updates AND gotten it to work? If so, what is the configuration that was used to make that happen? I feel close to having this working. I see that GSS cred passes w/o apparent error during the TKEY negotiation with an Active Directory DC and the BIND DNS server: client 192.168.0.30#52314: query gss cred: "DNS/[email protected]", GSS_C_ACCEPT, 4294967256 gss-api source name (accept) is [email protected] process_gsstkey(): dns_tsigerror_noerror client 192.168.0.30#52314: send But, when the Update is sent, it is refused: client 192.168.0.30#58330: update client 192.168.0.30#58330: updating zone 'example.com/IN': update failed: rejected by secure update (REFUSED) client 192.168.0.30#58330: send Does anyone have this working in the real world?

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• 3ware RAID in Windows 7

  - by user36484

  Just moved a 3ware 9500S-8 raid card and a few drives from my linux box into my win7 box. Windows Updates picked up the 3ware driver and installed it. After a reboot I checked Disk Management and it shows the array as one solid drive with the correct size. The only issue is that its not assigned a drive letter and when I right click on it my only option is to Convert to Dynamic Disk... From what I've read this is not something I want to do. What are my options?

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• [JavaScript] Global variables across multiple files

  - by Goro

  Hello, A bunch of my JavaScript code is in an external file called helpers.js. Inside the HTML that calls this JavaScript code I find myself in need of knowing if a certain function from helpers.js has been called. I have attempted to create a global variable by defining: var myFunctionTag = true; In global scope both in my HTML code and in helpers.js. Heres what my html code looks like: <html> ... <script type='text/javascript' src='js/helpers.js'></script> ... <script> var myFunctionTag = false; ... //I try to use myFunctionTag here but it is always false, even though it has been se t to 'true' in helpers.js </script> Is what I am trying to do even doable? Thanks,

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• Linux cron spamming me then stops about php/suhosin

  - by acidzombie24

  My server emails me when any messages goes to root. cron sends me messages. Today I got over 300 emails from my server all of which are PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626+lfs/suhosin.so' - /usr/lib/php5/20090626+lfs/suhosin.so: cannot open shared object file: No such file or directory in Unknown on line 0 I have no idea why. I went to debug it however 5hours ago it stopped so theres nothing i could look at except maybe logs. Why did this maybe happen? Disk isn't full and I have enough ram available.

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• linker error in simple program: multiple definition of function

  - by BillyJean

  My function test is added to two different .cpp-files and the functions are private to their respective files as shown below test1.cpp #include <iostream> using namespace std; void test() { cout << "test" << endl; } test2.cpp #include <iostream> using namespace std; void test() { cout << "test" << endl; } main.cpp #include <iostream> using namespace std; int main() { return 0; } During linking I get the error multiple definition of test() - but how is that possible, considering that the two files have their own private scope!? I could understand it if I included the function prototype in each .cpp-files' corresponding header, but there is no such thing in this example.

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• error CS0133: Assigning the result of a function to a const in C#.net

  - by Greg

  Trying to tidy up scope and avoid possible multiple calls to RegisterWindowMessage. Currently have a class used once with the following member [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)] static extern int RegisterWindowMessage(string lpString); private int m_message = RegisterWindowMessage("MY_MSG"); As we only have one instance this seems ok, but think it would be more tidy to use. With my basic C# understanding this should call RegisterWindowMessage and assign the result to int and not allow it to change. private const int message = RegisterWindowMessage("MY_MSG"); however attempting to do so leads to a error CS0133: The expression being assigned to 'someclass.messageEvent' must be constant so now I'm confused, does this mean the function was being assigned and called each time m_message was used previously, is there something else missing?

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• How to benchmark apache/nginx setup

  - by Saif Bechan

  I am planning to setup nginx as reverse proxy. I will have apache to deliver my dynamic content, and nginx will deliver the static content. My configuration i have now is just Apache with fastCGI. This gives me no configuration problems and runs great. After I have set up nginx I want to run some benchmarks to see if I really got some performance increases, else i will switch back. Does anyone know how I can benchmark this type of setup? Or maybe someone did this already and have some canned results, I will be glad to hear them.

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• Convert XML file to CSV

  - by skerit

  After having converted a messed up XML using regex, I now need to change it yet again. This source file <product> <sku>SP00001</sku> <PID_OWNER_SellerID>StoreName</PID_OWNER_SellerID> <EANCode>8711983489813</EANCode> <DeliveryDays>2</DeliveryDays> </product> Has to become a CSV file, but like this: sku field value SP00001 PID_OWNER_SellerID StoreName SP00001 EANCode 8711983489813 SP00001 DeliveryDays 2 I take it this is outside of regex' scope and has to be done with XSL?

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• Strange behaviour of code inside TransactionScope?

  - by Krishna

  We are facing a very complex issue in our production application. We have a WCF method which creates a complex Entity in the database with all its relation. public void InsertEntity(Entity entity) { using(TransactionScope scope = new TransactionScope()) { EntityDao.Create(entity); } } EntityDao.Create(entity) method is very complex and has huge pieces of logic. During the entire process of creation it creates several child entities and also have several queries to database. During the entire WCF request of entity creation usually Connection is maintained in a ThreadStatic variable and reused by the DAOs. Although some of the queries in DAO described in step 2 uses a new connection and closes it after use. Overall we have seen that the above process behaviour is erratic. Some of the queries in the inner DAO does not even return actual data from the database? The same query when run to the actaul data store gives correct result. What can be possible reason of this behaviour?

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• How does java permgen relate to code size

  - by brad

  I've been reading a lot about java memory management, garbage collecting et al and I'm trying to find the best settings for my limited memory (1.7g on a small ec2 instance) I'm wondering if there is a direct correlation between my code size and the permgen setting. According to sun: The permanent generation is special because it holds data needed by the virtual machine to describe objects that do not have an equivalence at the Java language level. For example objects describing classes and methods are stored in the permanent generation. To me this means that it's literally storing my class def'ns etc... Does this mean there is a direct correlation between my compiled code size and the permgen I should be setting? My whole app is about 40mb and i noticed we're using 256mb permgen. I'm thinking maybe we're using memory that could be better allocated to dynamic code like object instances etc...

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• Random timeouts in IIS7

  - by Cor-Paul

  Hi, I have a weird problem which I think is caused by my IIS7 installation on Vista 64 bit. I have a bunch of AJAX calls and JS dynamic file loads (~30) in a local application, and I get random timeouts (or so it seems) in my browser. In Chrome it looks like the page just stops loading (no HDD activity), in Firefox/Firebug I can see that some of the files are being loaded but they never actually finish. When I reload the page the same occurs, but for (random) other files that must be loaded. When I try to load one of those JS files concurrently (so during the timeout in FF) in another browser, the file loads there. So I am pretty sure the request can be handled by IIS. I am thinking about a limit or so on simultaneous requests from the same browser which is not working correctly, but I am pretty clueless on how to solve this. Does anyone recognize this problem and know a solution? Thanks!

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• jQuery.ajax checking if there is already another xhr

  - by digitalFresh

  I have a page when, if the user is near the bottom of the page, loads the next page. I just recently switched it to jQuery, and now use the jQuery.ajax() function to get the data. However, now i cannot check if the xhr is already loading, making the page load multiple xhrs when the user near the bottom. My listener is: $(document).scroll(function () { if(/* scrollbar is near bottom */) loadxhr(dat++); //function that calls jQuery.ajax() } }); Basically, can you track the readyState of the call in a global scope?

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• PHP DL Function

  - by Pete Herbert Penito

  Is allowing dynamic extension loading dangerous for some reason? I ask because I need it to include the pecl oauth.so extension to make the Google Adwords PHP SDK work using dl(). I've tried all other alternatives but just can't get it to work: http://php.net/manual/en/function.dl.php enable_dl is set to off by default inside my php.ini, I enabled it, restarted apache and it works. If it's safe to use why is it disabled by default? I'm the only user with access to the server and it will be hosting a web application. Any advice would be helpful!

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• Problem with sharepoint search.

  - by Lalit

  Hi, I have created the Contact list. I feed proper data where required in my personal sharepoint site. Bu when I look for the specific name or any key word that present in contact list it shows message : No results matching your search were found. Check your spelling. Are the words in your query spelled correctly? Try using synonyms. Maybe what you're looking for uses slightly different words. Make your search more general. Try more general terms in place of specific ones. Try your search in a different scope. Different scopes can have different results. Where is, I am giving proper inputs by following these instructions. What should be problem. Is i nees to make any setting for make my data searchable ?

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