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• HttpWebRequest is extremely slow!

  - by Earlz

  Hello, I am using an open source library to connect to my webserver. I was concerned that the webserver was going extremely slow and then I tried doing a simple test in Ruby and I got these results Ruby program: 2.11seconds for 100 HTTP GETs C# library: 20.81seconds for 100 HTTP GETs I have profiled and found the problem to be this function: private HttpWebResponse GetRawResponse(HttpWebRequest request) { HttpWebResponse raw = null; try { raw = (HttpWebResponse)request.GetResponse(); //This line! } catch (WebException ex) { if (ex.Response is HttpWebResponse) { raw = ex.Response as HttpWebResponse; } } return raw; } The marked line is takes over 1 second to complete by itself while the ruby program making 1 request takes .3 seconds. I am also doing all of these tests on 127.0.0.1, so network bandwidth is not an issue. What could be causing this huge slow down?

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• There are another way to load MSHTML documents without use Application.ProcessMessages?

  - by douglaslise

  There are another way to load MSHTML documents without use Application.ProcessMessages? To load a document into a IHTMLDocument I need to do this: while Doc.readyState <> 'complete' do Application.ProcessMessages; I want not to process all the message queue during the loading, because I would be changing my application flow, in other words, some messages that should be processed after the loading to be completed can be processed earlier, even before the loading end. There is a special message code that the IHTMLDocument expect to advance in the loading process? Or there is another way to load? Thanks.

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• Asynchronous Sockets - Handling false socket.AcceptAsync values

  - by David

  The Socket class has a method .AcceptAsync which either returns true or false. I'd thought the false return value was an error condition, but in the samples Microsoft provide for Async sockets they call the callback function synchronously after checking for failure, as shown here: public void StartAccept(SocketAsyncEventArgs acceptEventArg) { if (acceptEventArg == null) { acceptEventArg = new SocketAsyncEventArgs(); acceptEventArg.Completed += new EventHandler<SocketAsyncEventArgs>(AcceptEventArg_Completed); } else { // socket must be cleared since the context object is being reused acceptEventArg.AcceptSocket = null; } m_maxNumberAcceptedClients.WaitOne(); bool willRaiseEvent = listenSocket.AcceptAsync(acceptEventArg); if (!willRaiseEvent) { ProcessAccept(acceptEventArg); } } /// <summary> /// This method is the callback method associated with Socket.AcceptAsync operations and is invoked /// when an accept operation is complete /// </summary> void AcceptEventArg_Completed(object sender, SocketAsyncEventArgs e) { ProcessAccept(e); } Why do they do this? It defeats the purpose of asynchronous sockets and stops the method from returning.

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• Performance analysis strategies

  - by Bernd

  I am assigned to a performance-tuning-debugging-troubleshooting task. Scenario: a multi-application environment running on several networked machines using databases. OS is Unix, DB is Oracle. Business logic is implemented across applications using synchronous/asynchronous communication. Applications are multi-user with several hundred call center users at peak time. User interfaces are web-based. Applications are third party, I can get access to developers and source code. I only have the production system and a functional test environment, no load test environment. Problem: bad performance! I need fast results. Management is going crazy. I got symptom examples like these: user interface actions taking minutes to complete. Seaching for a customer usually takes 6 seconds but an immediate subsequent search with same parameters may take 6 minutes. What would be your strategy for finding root causes?

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• Pinvoke- to call a function with pointer to pointer to pointer parameter

  - by jambodev

  complete newbe in PInvoke. I have a function in C with this signature: int addPos(int init_array_size, int *cnt, int *array_size, PosT ***posArray, PosT ***hPtr, char *id, char *record_id, int num, char *code, char *type, char *name, char *method, char *cont1, char *cont2, char *cont_type, char *date1, char *date_day, char *date2, char *dsp, char *curr, char *contra_acc, char *np, char *ten, char *dsp2, char *covered, char *cont_subtype, char *Xcode, double strike, int version, double t_price, double long, double short, double scale, double exrcised_price, char *infoMsg); and here is how PosT looks like: typedef union pu { struct dpos d; struct epo e; struct bpos b; struct spos c; } PosT ; my questions are: 1- do I need to define a class in CSharp representing PosT? 2- how do I pass PosT ***posArray parameter across frm CSharp to C? 3- How do I specify marshaling for it all? I Do appreciate your help

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• Sharepoint Foundation 2010 development single machine installation problems

  - by Robert Koritnik

  I'm having problems installing development machine for Sharepoint (Foundation) 2010. This is what I did so far on the same machine: Installed a clean Windows 7 x64 with 4GB of RAM without being part of any domain. Just a simple standalone machine. Enabled IIS related features as described here except IIS6 related ones (two of them) Installed SQL Server 2008 R2 Development Edition (DB Engine and Writer being enabled but not SQL Agent) Installed Visual Studio 2010 Premium Started installing Sharepoint Foundation 2010 with first extracting files, changing config to enable Windows 7 installation and then installed it as Server Farm (then Complete) to avoid installing SQL Express. Created a separate SPF_CONFIG local user with Logon on as a service right. Opened SPF Management Shell and run New-SPConfigurationDatabase so I am able to use a non-domain username (SPF_CONFIG that I created in the previous step) But all I get is this: The outcome after this error is: Database Sharepoint2010Config is created User SPF_CONFIG is added to SQL Server and attached to this newly created database as dbowner and checking SQL server security logins this user has following rights: dbcreator securityadmin public

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• How hard is FizzBuzz? [closed]

  - by Josh K

  After reading various blog entries I took it upon myself to code a FizzBuzz program in PHP. class FizzBuzz { function __construct() { } function go() { for($i = 1; $i < 101; $i++) { if($i % 3 == 0 and $i % 5 == 0) { echo("FizzBuzz\n"); continue; } else if($i % 3 == 0) { echo("Fizz\n"); continue; } else if($i % 5 == 0) { echo("Buzz\n"); continue; } else { echo($i."\n"); } } } } $FB = new FizzBuzz(); $FB->go(); Created the FizzBuzz object just because I could, I complete this in under five minutes. Is it really that hard to do?

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• WPF Statusbar Updates - help, I seem to be going round in circles

  - by David Ward

  I seem to be going round in circles. I have a WPF application that has a main ribbon window with a status bar. When you navigate to a "view" a user control is displayed as the content of the main window. The view has a ViewModel which handles retrieving data from the database and the View's datacontext is set to the ViewModel. What I want is to have the lengthy operation (data retrieval) run on a background thread and whilst it is running the status in the main window to report appropriately. When the background task is complete, the status should revert back to "Ready" (much the same as Visual Studio). How should I wire this together so that I can have the data access code separated out in the ViewModel whilst keeping a responsive UI? I have tried using the BackgroundWorker is various places in the code and I still end up with an unresponsive UI.

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• "Unable to start program" on Debug Immediately After Successful Build

  - by TZ_Geek

  When I try to run my first application with the debugger, I get a pop up which says: Visual C__ 2008 Express Edition This project is out of date: ProgName - Debug Win32 Would you like to build it? [Yes[ [No] [Cancel] [ ] Do not show this dialog again? I find this somewhat bothersome, because the very last thing that I did just before that was build the application. And the build did complete successfully (immediately before I clicked on Start Debugging -- F5.) The second time I pressed with wrong cilck on the Answer [No] on the same msg Now, I can't compile my apps What exactly does "do not show this dialog again" mean? It sounds to me like its going to remember my answer and use the same answer every time this situation occurs in the future. I did some stuffs like "Clean Solution" then "Build Solution" then "Start Debugging" ,but the same problem what's the solution ,how can I reset this message to make it work again .

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• Installshield 2009 Premier Basic MSI: Not show a warning message window during uninstall

  - by Samir

  Installshield 2009 Premier Basic MSI: When I uninstall there is a Message Box saying that explorer has to be closed: [Title] My-Product-Name [List] Explorer [radio button 1, Selected by default] Automatically close applications and attempt to restart them after setup is complete [radio button 2] Do not close applications. (A Reboot will be required) [Ok Button] [Cancel Button] If I click OK [with radio button 1 selected] all opened folders are closed !!! How to get rid of this, I don't want any warning message box to show and not close explorer either? More info: I have a dll which is used to show explorer context menu with icons when we right click on any file/folder. This dll is registered during installation and unregistered during uninstall. When we uninstall WinRAR we don't see any such messages, do we?

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• installing ruby 1.9.3 of osx mavricsmavrics

  - by user1648962

  I am trying to install ruby 1.9.3 on my osx 10.9 operating system and I keep getting the following error : Error running 'requirements_osx_port_update_system ruby-1.9.3-p448', please read /Users/ramesh/.rvm/log/1383430694_ruby-1.9.3-p448/update_system.log Requirements installation failed with status: 1. I am using the following command to do the installtion : rvm install 1.9.3 The complete log is as given below : Ramesh:Downloads ramesh$ rvm install 1.9.3 Searching for binary rubies, this might take some time. No binary rubies available for: osx/10.9/x86_64/ruby-1.9.3-p448. Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies. Checking requirements for osx. Installing requirements for osx. Updating system............................................................................................................................................................................................................................................................. Error running 'requirements_osx_port_update_system ruby-1.9.3-p448', please read /Users/ramesh/.rvm/log/1383430694_ruby-1.9.3-p448/update_system.log Requirements installation failed with status: 1. Ramesh:Downloads ramesh$ clear

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• WCF Transaction Scope SQL insert table lock

  - by lihnid

  Hi All, I have two services talking to two different Data-stores (i.e SQL). I am using transactionscope: eg: using(TransactionScope scope = new TransactionScope()) { service1.InsertUser(user);//Insert to SQL Service 1 table User service2.SavePayment(payment);//Save payment SQL Service 2 table payment scope.Complete(); } Service1 is locking the table (User) until the transaction is completed making subsequent transactions with that table sequential. Is there a way to overcome the lock, so can have more than one concurrent calls to the SQL service1 table while the above code is executing? I would appreciate any input. Thanks in Advance. Lihnid

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• dataset not getting all the resultant tables i.e multiple tables are not being displayed in dataset

  - by Shantanu Gupta

  How to fill multiple tables in a dataset. I m using a query that returns me four tables. At the frontend I am trying to fill all the four resultant table into dataset. Here is my Query. Query is not complete. But it is just a refrence for my Ques Select * from tblxyz compute sum(col1) suppose this query returns more than one table, I want to fill all the tables into my dataset I am filling result like this con.open(); adp.fill(dset); con.close(); Now when i checks this dataset. It shows me that it has four tables but only first table data is being displayed into it. rest 3 dont even have schema also. What i need to do to get desired output

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• Address extraction from emails in Java

  - by Hans Klock

  I'm looking for an Java open-source library which is able to extract address information from a (German) email (signature). The library should find name street city, city code/postal code email tel/fax address-parser.com is an commercial product, but an free (albeit simple) library would be great. stackoverflow.com/questions/16413/parse-usable-street-address-city-state-zip-from-a-string is asking for something similar, but my problem is broader because the address information is hidden in a complete email. And there isn't a solution either... Any ideas?

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• jQuery prevent.default stops rest of code working

  - by Tim

  Hey all I have this code where I am using jQuery to navigate to the next page, because I want some effects to take place before that happens. The problem is, that everything after the prevent.Default(); doesn't seem to work! $("a").click(function(event){ event.preventDefault(); $(".content-center").animate({height: "0px"}, 500); navigate($(this).attr('href')); }); I need things to happen in that order, so that the animation happens and once it's complete - load the next page... Does anyone have any ideas? Many thanks in advance? Tim

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• Adding a loading gif to simple script

  - by bluedaniel

  Hello everyone, Im really really new to Javascript but Ive got this script that loads the contents of a url and everything works fine. I call the plannerSpin function with an onClick method on a button but how would I go about displaying an animated gif whilst all this is going on? var xmlHttp function plannerSpin(str) { xmlHttp = GetXmlHttpObject() if (xmlHttp == null) { alert("Browser does not support HTTP Request") return } var url = "/recipes/planner/data" xmlHttp.onreadystatechange = stateChanged xmlHttp.open("GET", url, true) xmlHttp.send(null) } function stateChanged() { if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete") { document.getElementById("recipe_planner_container").innerHTML = xmlHttp.responseText } } function GetXmlHttpObject() { var xmlHttp = null; try { // Firefox, Opera 8.0+, Safari xmlHttp = new XMLHttpRequest(); } catch (e) { // Internet Explorer try { xmlHttp = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); } } return xmlHttp; }

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• Calling AS3 function from html link - Javascript? php? swfaddress?

  - by wdense51

  I have an actionscript function that loads an external swf and is currently linked to a button in the same swf... function btnClick(event:MouseEvent):void{ SoundMixer.stopAll(); removeChild(loader); loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onSWFLoaded); loader.load(movieSWF) loader.x=Xpos loader.y=Ypos addChild(loader) } button.addEventListener(MouseEvent.CLICK,btnClick); I'm wondering if there is a way to call this function from a link on the page that the swf is housed on. I'm guessing javascript, php or swfaddress would be the most likely way, but I'm unbelievably new to all this so I'm not sure where to start or how to go about it. Any help would be appreciated.

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• Edit first column of GridView

  - by nCdy

  I've got very dynamic GridView and I need to allow to user to edit first column of it. After he edit first column of grid it must be updated on DataBase. Is there any ways to handle it ? My only idea is to put some changeable element to first cell of each Row so it must be able to set / get my values for each row but can't find yet any examples of it ... Additional info : GridView takes data from Object data source and all columns are dynamic (yes, maybe except first, but I add it in dynamic way) and load complete DataTable...

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• Display Image in Crystal reports Using URL

  - by Shantanu Gupta

  I want to show image in a crystal report. Scenario is something like this. I have a database where my path of an image is persisting. eg ftp://Images/1.jpg Now i want to repeat this image in a crystal report. When i fills my datatable it shows me complete url. When i displays this field in GridView i uses imageBox to display my image and it works for me very fine. But when i tries to do the same with crystal reports, it starts me showing image path as it is. Now here instead of path i want an image to be displayed.

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• Parse Complex WSDL Parameter Information in C#

  - by jaws

  I am attempting to parse WSDL, along the lines of the example given here. The author notes, in the comments, that the example is not capable of drilling down into complex data types. And in fact, when I run the example, it does not appear to even handle simple data types. I have poked around in System.Web.Services.Description.ServiceDescription class, which is used in the example, but cannot find any actual parameter or return type information at run-time. I gather that I may need to do some manual parsing of an xsd file? Both google and stackoverflow appear to lack a complete example of how to drill down into complex types programmatically, so... how should I do this?

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• IIS load balancing and site deployment

  - by KLC

  Hi, currently I have a site sits on one IIS7 server. When we deploy a new version of the site, we bring the site down and display an offline page. What I really want is have two same exact copies of the site sits in one IIS 7 server and load balance users among both servers. when we deploy a new version of the site, we will bring site1 down (users in site1 automatically routes to site2 on next postback), when site1 deployment is complete, bring site2 down (users in site2 being routes to site1 on next postback). is this even possible?

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• How to create a vector of lists in R?

  - by Martin

  Hi, I have a list (tmpList), which looks like this: $op [1] "empty" $termset $termset$field [1] "entry" $termset[[2]] $termset[[2]]$explode [1] "Y" This is a list with a list inside. If I add this list to a vector theOneVector = c(theOneVector, tmpList) Now the resulting vector is of the length 2, because the first entry ("op") of the list is separated from the tmpList. Is it possible to append the complete tmpList into this vector? I already tried it with theOneVector = c(theOneVector, list(tmpList)) which gives a vector with the length of 1, but it is very cumbersome to access the elements of the list with this extra list around the list. (Too much list in one sentence I think.) Any help would be appreciated, Martin

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• What's the cleanest way to programmatically kill and restart explorer.exe?

  - by Paul Accisano

  Greetings all, I'm working on a Windows program whose installation necessitates restarting explorer.exe. I know "Reboot your computer to complete the installation" is the standard method here, but I'd like my installer to give users the option of just restarting Explorer so they can start using my program immediately. What's the best way to do that? Of course I could just find and kill the process, but that seems rather icky. Is there some trick to, say, make Explorer think the user is logging off and close cleanly? Thanks!

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• Performance profiler for a java application

  - by Nitin Garg

  I need to optimize a java application. It makes some 3rd party calls. I need some good tool to accurately measure the time taken by individual api calls. To give an idea of complexity- the application takes a data source file containing 10 lakh rows, and it takes around one hour to complete the processing. As a part of processing , it makes some 3rd party calls (including some network calls). I need to identify which calls are taking more time then others, and based on that, find out a way to optimize the application. Any suggestions would be appreciated.

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• Java - SwingWorker - Can we call one SwingWorker from other SwingWorker instead of EDT

  - by Yatendra Goel

  I have a SwingWorker as follows: public class MainWorker extends SwingWorker(Void, MyObject) { : : } I invoked the above Swing Worker from EDT: MainWorker mainWorker = new MainWorker(); mainWorker.execute(); Now, the mainWorker creates 10 instances of a MyTask class so that each instance will run on its own thread so as to complete the work faster. But the problem is I want to update the gui from time to time while the tasks are running. I know that if the task was executed by the mainWorker itself, I could have used publish() and process() methods to update the gui. But as the tasks are executed by threads different from the Swingworker thread, how can I update the gui from intermediate results generated by threads executing tasks.

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