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  • Questions about the MVC architecture

    - by ah123
    I started coding a considerably complicated web application, and it became quite a mess. So I figured I'd try to organize it in a better way. MVC seemed appropriate. I've never used MVC before, and researching about it I'm trying to consolidate a better perception of it (and my questions obviously reflect what I think I've learned so far). My questions are slightly JavaScript oriented: What object should make "AJAX" requests? The Controller or the Model? (seperation -- should the Model just store/manipulate the data, should it not care/know where the data came from, or should it be the one fetching it?) Should the Model call View functions providing them with data as arguments or should the View query (reference) the Model within itself? (seperation principles in mind, "the View shouldn't care/know where it gets the data from" -- is that correct?) In general, should the View "know" of the Model's existance, and vice-versa? Is the Controller the only thing gluing them together or is that simply incorrect? (I really doubt that statement is generally correct) There's a good chance I'd want to port this into a desktop/mobile application, so I would like to seperate components in a way that will allow me to achieve that task, replacing the current source of the data, HTTP requests, with DB access, and replacing the View. Maybe every approach that I've asked about is still "valid" MVC and it's just up to me to choose. I understand that nothing is set in stone, I'm just trying to have a (better) general idea in my head.

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  • Core Data - Entity Relationships Not Working as expected

    - by slimms
    I have set up my data model in xcode like so EntityA AttA1 AttA2 EntityB AttB1 AttB2 AttB3 I then set up the relationships EntityA Name: rlpToEntityB Destination: EntityB Inverse: rlpToEntityA To Many: Checked EntityB Name: rlpToEntityA Destination: EntityA Inverse: rlpToEntityB To Many: UnChecked i.e. relationship between the two where Each one of EntityA can have many EntityB's It is my understanding that if i fetch a subset of EntityB's I can then retrieve the values for the related EntityA's. I have this working so that i can retrieve the EntityB values using NSManagedObject *objMO = [fetchedResultsController objectAtIndexPath:indexPath]; strValueFromEntityB = [objMO valueForKey:@"AttB1"]; However, if I try to retrieve a related value from EntityA by doing the following strValueFromEntityA = [objMO valueForKey:@"AttA1"]; I get the error "The entity EntityB is not Key value coding-compliant for the key Atta1" Not surprisingly i suppose if i switch things around to fetch from EntityA i cannot access attributes of EntityB So it appears the defined relationshipare being ignored. Can anyone spot what i am doing wrong? I confess im very new to iPhone programming and especially to Core Data so please go easy on me and provide verbose explanations or point me in the direction a specific resource. I have downloaded the apple sample apps (Core Data Books, Top Songs and recipes) but I still can't work this out. Thanks in advance, Nev.

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  • My OpenCL kernel is slower on faster hardware.. But why?

    - by matdumsa
    Hi folks, As I was finishing coding my project for a multicore programming class I came up upon something really weird I wanted to discuss with you. We were asked to create any program that would show significant improvement in being programmed for a multi-core platform. I’ve decided to try and code something on the GPU to try out OpenCL. I’ve chosen the matrix convolution problem since I’m quite familiar with it (I’ve parallelized it before with open_mpi with great speedup for large images). So here it is, I select a large GIF file (2.5 MB) [2816X2112] and I run the sequential version (original code) and I get an average of 15.3 seconds. I then run the new OpenCL version I just wrote on my MBP integrated GeForce 9400M and I get timings of 1.26s in average.. So far so good, it’s a speedup of 12X!! But now I go in my energy saver panel to turn on the “Graphic Performance Mode” That mode turns off the GeForce 9400M and turns on the Geforce 9600M GT my system has. Apple says this card is twice as fast as the integrated one. Guess what, my timing using the kick-ass graphic card are 3.2 seconds in average… My 9600M GT seems to be more than two times slower than the 9400M.. For those of you that are OpenCL inclined, I copy all data to remote buffers before starting, so the actual computation doesn’t require roundtrip to main ram. Also, I let OpenCL determine the optimal local-worksize as I’ve read they’ve done a pretty good implementation at figuring that parameter out.. Anyone has a clue? edit: full source code with makefiles here http://www.mathieusavard.info/convolution.zip cd gimage make cd ../clconvolute make put a large input.gif in clconvolute and run it to see results

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  • My service does not start on Windows 2008 (it works on Windows 2003)

    - by akirekadu
    When we install our product on Windows 2008 SP2, couple of services fail to start. After trying different things, we figured out that these service were able to start when "Log on as" is set to "Local system account". This service does need to run as a specific user because it requires access to secure resources. The service did run just fine under this special user account under Windows 2003. I am thinking the problem is related to UAC (user access control). Under interactive mode one can elevate permission by answering the security dialog box. How to do the same for a service? How to configure the service so it runs with necessary permissions? Thanks! Couple of notes I would like to add. One solution I tried is to execute the installer as administrator. The service does get installed. However, it creates another problem. An embedded 3rd party product and its files get installed with admin only rights. So we do need to run the installer as logged in user.

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  • Attempted to read or write protected memory-Sql Compact and .NEt

    - by Jankhana
    I'm using Sql Compact3.5 as my DB with C# .NET . I have a strange problem with my application. I'm running the code in two PC with same configuration except the Sql Compact installed. In one PC where Sql Compact3.5 is not installed I'm getting this strange error: Exception :Attempted to read or write protected memory. This is often an indication that other memory is corrupt. Inner Exception : Stack Trace : at System.Data.SqlServerCe.NativeMethods.CloseStore(IntPtr pSeStore) at System.Data.SqlServerCe.SqlCeConnection.ReleaseNativeInterfaces() at System.Data.SqlServerCe.SqlCeConnection.Dispose(Boolean disposing) at System.Data.SqlServerCe.SqlCeConnection.Finalize() Source : System.Data.SqlServerCe I don't know where i have went wrong. I checked my code and included try catch everywhere. I'm handling Unhandled exception also using this . I am getting this error from a console application which I'm starting from Windows Form. In both the application I've inserted the Unhandled Exception coding and it's getting executed and getting return to the texxt file. But still Microsoft Don't Error Report is getting generated and I get that Dialog box!!! Y still that dialog box is getting generated is the trouble!!! Is there any way to supress that Dialog box??? Y I'm getting this box when I'm handling the exception and it's executing my catch handler??? In another PC where SQL Compact is installed no error I get!!! Any idea y is that so???

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  • review of a codility test - pair_sum_even_count

    - by geoaxis
    I recently took an online test on codility as part of a recruitment process. I was given two simple problems to solve in 1 hour. For those who don't know codility, its an online coding test site where you can solve ACM style problems in many different languages. if you have 30 or so mins then check this http://codility.com/demo/run/ My weapon of choice is usually Java. So on of the problems I have is as follows (I will try to remember, should have taken a screenshot) Lets say you have array A[0]=1 A[1]=-1 ....A[n]=x Then what would be the smartest way to find out the number of times when A[i]+A[j] is even where i < j So if we have {1,2,3,4,5} we have 1+3 1+5 2+4 3+5 = 4 pairs which are even The code I wrote was some thing along the lines int sum=0; for(int i=0;i<A.length-1;i++){ for (int j=i+1;j<A.length;j++){ if( ((A[i]+A[j])%2) == 0 && i<j) { sum++; } } } There was one more restriction that if the number of pairs is greater than 1e9 then it should retrun -1, but lets forget it. Can you suggest a better solution for this. The number of elements won't exceed 1e9 in normal cases. I think I got 27 points deducted for the above code (ie it's not perfect). Codility gives out a detailed assessment of what went wrong, I don't have that right now.

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  • Unknown error when submit a REST request to Liferay json API

    - by r.rodriguez
    I'm writing an script in Python to automatically update the structures in my Liferay portal and I want to do it via the json REST API. I make a request to get an structure (method getStructure), and it worked. But when I try to do an structure update in the portal it shows me the following error: ValueError: Content-Length should be specified for iterable data of type class 'dict' {'serviceContext': "{'prueba'}", 'serviceClassName': 'com.liferay.portlet.journal.service.JournalStructureServiceUtil', 'name': 'FOO', 'xsd': '... THE XSD OBTAINED VIA JSON ...', 'serviceParameters': '[groupId,structureId,parentStructureId,name,description,xsd,serviceContext]', 'description': 'FOO Structure', 'serviceMethodName': 'updateStructure', 'groupId': '10133'} What I'm doing is the next: urllib.request.Request(url = URL, data = data_update, headers = headers) URL is http://localhost:8080/tunnel-web/secure/json The headers are configured with basic authentication (it works, it is tested with the getStructure method). Data is: data_update = { "serviceClassName" : "com.liferay.portlet.journal.service.JournalStructureServiceUtil", "serviceMethodName" : "updateStructure", "serviceParameters" : "[groupId,structureId,parentStructureId,name,description,xsd,serviceContext]", "groupId" : 10133, "name" : FOO, "description" : FOO Structure, "xsd" : ... THE XSD OBTAINED VIA JSON ..., "serviceContext" : "{}" } Does anybody know the solution? Have I to specify the length for the dictionary and how? Or this is a bug?

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  • Redirection fails in IE but is fine with Firefox

    - by Bob
    I use an <Authorize> attribute in ASP.NET MVC to secure a controller. My page loads portions of its content via AJAX. Here's a problem I have with IE8, but not Firefox 3.6: Sign in as user JohnDoe and navigate to http://www.example.com/AjaxPage. Everything works fine. AjaxPage is protected with the <Authorize> attribute. Sign out, which redirects me to http://www.example.com. That page doesn't use <Authorize>. Navigate to http://www.example.com/AjaxPage without signing in again. I should be redirected to the Sign In page since that controller has the <Authorize> attribute. Step 3 works with Firefox, but IE8 displays the non-Ajax portion of http://www.example.com/AjaxPage and then never loads the Ajax content. I'm surprised any content is displayed at all since I should be redirected to the Sign In page. My code redirects to the login page with: Return Redirect("https://login.live.com/wlogin.srf?appid=MY-APP-ID&alg=wsignin1.0") Why does Firefox handle this redirection, but IE doesn't? Since it works the first time (Step 1 above), is there a cache issue? EDIT: I used Fiddler to see if AjaxPage was being cached, but it appears not to be. I assume if it were cached, I'd get an HTTP Status Code 200 back. I may simply misunderstand this though.

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  • Redirection fails in IE but is fine with Firefox

    - by Bob
    I use an <Authorize> attribute in ASP.NET MVC to secure a controller. My page loads portions of its content via AJAX. Here's a problem I have with IE8, but not Firefox 3.6: Sign in as user JohnDoe and navigate to http://www.example.com/AjaxPage. Everything works fine. AjaxPage is protected with the <Authorize> attribute. Sign out, which redirects me to http://www.example.com. That page doesn't use <Authorize>. Navigate to http://www.example.com/AjaxPage without signing in again. I should be redirected to the Sign In page since that controller has the <Authorize> attribute. Step 3 works with Firefox, but IE8 displays the non-Ajax portion of http://www.example.com/AjaxPage and then never loads the Ajax content. I'm surprised any content is displayed at all since I should be redirected to the Sign In page. My code redirects to the login page with: Return Redirect("https://login.live.com/wlogin.srf?appid=MY-APP-ID&alg=wsignin1.0") Why does Firefox handle this redirection, but IE doesn't? Since it works the first time (Step 1 above), is there a cache issue?

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  • Workflow UI Integration - is WF a good approach?

    - by AJ
    Somewhat similar to this question, except we haven't decided that we're going with WF yet. I'm working on designing a system that requires a series of decisions and activities on a "work object," so I naturally began to consider workflow, specifically WF. What I'm wondering is if WF is a good solution for a situation like the following (oversimplified for this question) case (please forgive bad ascii art): __________________ | Gather some info | | (web page) | |__________________| | | / \ / \ / \ / \ / cond \ \ 1 / \ / \ / \ / \ / | | ______________|_______________ | | | | | ______|______ ______|________ / do some / | Get more info | / process / | (web page) | /____________/ |_______________| | | / \ / \ / \ / cond. \ \ 2 / \ / \ / \ / | | |__________________ | | | | _____|_____ _____|_____ / some / / another / / process / / process / /__________/ /__________/ The part I'm struggling with is the get more info (web page) step and what happens subsequent, which would mean a halt in the execution of the workflow runtime. I'm aware that this is possible, but I'm not sure that WF is the best approach for this type of code, as the user interaction may be required at many different points through the entire workflow, and the workflow will drive what data entry screens are needed. We are using a WinForms/ASP.NET web forms package for UI, which is homegrown and difficult to push deployments on, so something like SharePoint integration is out of the question. Our back-end is DB2, and the workflow code (whether it's in WF or otherwise) will need to interact with that as well. I guess the bottom line is, should we look into using WF for this, or would we be better served just coding it ourselves? Can WF easily integrate data entry screens to capture information that can be used further on in the workflow?

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  • how to limit the number of datas in pdf

    - by udaya
    Hi I am exporting data from php page to word,, there i get 'n' number of datas in each page .... How to set the maximum number of data that a word page can contain ,,,, I want only 20 datas in a single page This is the coding i use to export the data to pdf In mysql_table.php the table for the pdf document is be generated <?php require('mysql_table.php'); class PDF extends PDF_MySQL_Table { function Header() { //Title $this->SetFont('Arial','',18); $this->Cell(0,6,'Country details',0,1,'C'); $this->Ln(10); parent::Header(); } } //Connect to database mysql_connect('localhost','root',''); mysql_select_db('cms'); $pdf=new PDF(); $pdf->AddPage(); //First table: put all columns automatically $pdf->Table("SELECT (SELECT COUNT(*) FROM tblentercountry t2 WHERE t2.dbName <= t1.dbName and dbIsDelete='0') AS SLNO ,dbName as Namee,t3.dbCountry as Country,t4.dbState as State,t5.dbTown as Town FROM tblentercountry t1 join tablecountry as t3, tablestate as t4, tabletown as t5 where t1.dbIsDelete='0' and t1.dbCountryId=t3.dbCountryId and t1.dbStateId=t4.dbStateId and t1.dbTownId=t5.dbTownId order by dbName"); $pdf->AddPage(); //Second table: specify 3 columns $pdf->AddCol('rank',20,'','C'); $pdf->AddCol('name',20,'tablecountry'); $pdf->AddCol('pop',20,'Pop (2001)','R'); $prop=array('HeaderColor'=>array(255,150,100), 'color1'=>array(210,245,255), 'color2'=>array(255,255,210), 'padding'=>2); //$pdf->Table('select dbCountry,dbCountryId from tablecountry limit 0,10',$prop); $pdf->Output(); ?> How to limit the number of datas in a page

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  • Using SVN with a MySQL database ran by xamp - yes or no? (and how?)

    - by Extrakun
    For my current PHP/MySQL project (over a group of 4 to 5 team members), we are using this setup: each developer codes and test on his localhost running xamp, and upload to a test server via SVN. One question that I have now is how to synchronize the MySQL database? I may have added a new table to project and the PHP code references to it, so my other team members would need to access that table for my code (once they got it through SVN) to work. We are not always working in the same office all the time, so having a LAN and a MySQL server in the office is not feasible. So I am toying with 2 solutions Setup a test DB online, and have all the coders will reference to that, even when coding from localhost. Downside: you can't test if you happen not have internet access. Somehow sync the localhost copy of MySQL DB. Is that kind of silly? And if I do consider this, how do I do it? (which folder do I add to SVN?) (I guess a related question is how to automatically update the live MySQL DB from the testing DB, regardless if it is on a remote server or hosted locally via xamp. Any advice regarding that would be welcomed!)

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  • convert string to date and write back into NSMutableArray

    - by padatronic
    I have a NSMutableArray I get by loading a plist into it. The date field comes in as a string and i want to change it into a nsdate. I can change an nsstring into an nsdate. My array is an array of objects like the one below; { Date = "1/1/2009" Description = "Have you ever looked at a badger and thought i wonder how far you could fire that out of a cannon? Well this talk is for you"; File = "http://www.badgerCannon.org.uk/mp3/070310pm.mp3"; Series = "The Badger planet"; Speaker = "Will Ferell"; Title = "Is it a bird, is it a plane? no its a badger"; } I loop through and pull out the date and convert it from a NSString to a NSDate. I try writing it back in using the code; [[self.MediaDataArray objectAtIndex:i] replaceObjectAtIndex:0 withObject:Date]; but it errors and i am pretty sure it is because i am not putting it back into the array in the same format, ie just as a date not as date = "date". But lets face it i don't really know! Am i barking up the wrong tree? Please help, i have got the coding equivalent of writters block, or alternatively am just being really stupid! thanks in advance

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  • Internet Explorer Warning when embedding Youtube on HTTPS site?

    - by pellepim
    Our application is run over HTTPS which rarely presents any problems for us. When it comes to youtube however, the fact that they do not present any content over SSL connections is giving us some head ache when trying to embed clips. Mostly because of Internet Explorers famous little warning message: "Do you want to view only the webpage content that was delivered securely? This page contains content that will not be delivered using a secure HTTPS ... etc" I've tried to solve this in several ways. The most promising one was to use the ProxyPass functionality in Apache to map to YouTube. Like this: ProxyPass: /youtube/ http://www.youtube.com ProxyPassReverse: /youtube/ http://www.youtube.com This gets rid of the annoying warning. However, the youtube SWF fails to start streaming The SWF i manage to load into the browser simply states : "An error occurred, please try again later". Potential solutions are perhaps: Download youtube FLV:s and serve them out of own domain (gah) Use custom FLV-player and stream only FLV:s from youtube over a https proxy? Update 10 March: I've tried to use Googles Youtube API for ActionScript to load a player. It looked promising at first and I was able to load a player through my https:// proxy. However, the SWF that is loaded contains loads of explicit calls to different non-ssl urls to create authentication links for the FLV-stream and for loading different crossdomain policies. It really seems like we're not supposed to access flv-streams directly. This makes it very hard to bypass the Internet Explorer warning, short of ripping out the FLV:s from youtube and serving them out of your own domain. There are solutions out there for downloading youtubes FLV:s. But that is not compliant with the Youtube terms of use and is really not an option for us.

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  • how to know location of return address on stack c/c++

    - by Dr Deo
    i have been reading about a function that can overwrite its return address. void foo(const char* input) { char buf[10]; //What? No extra arguments supplied to printf? //It's a cheap trick to view the stack 8-) //We'll see this trick again when we look at format strings. printf("My stack looks like:\n%p\n%p\n%p\n%p\n%p\n% p\n\n"); //%p ie expect pointers //Pass the user input straight to secure code public enemy #1. strcpy(buf, input); printf("%s\n", buf); printf("Now the stack looks like:\n%p\n%p\n%p\n%p\n%p\n%p\n\n"); } It was sugggested that this is how the stack would look like Address of foo = 00401000 My stack looks like: 00000000 00000000 7FFDF000 0012FF80 0040108A <-- We want to overwrite the return address for foo. 00410EDE Question: -. Why did the author arbitrarily choose the second last value as the return address of foo()? -. Are values added to the stack from the bottom or from the top? apart from the function return address, what are the other values i apparently see on the stack? ie why isn't it filled with zeros Thanks.

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  • What specific features of LabView are frustrating to you?

    - by Underflow
    Please bear with me: this isn't a language debate or a flame. It's a real request for opinions. Occasionally, I have to help educate a traditional text coder in how to think in LabVIEW (LV). Often during this process, I get to hear about how LV sucks. Rarely is this insight accompanied by rational observations other than "Language X is just so much better!". While this statement is satisfying to them, it doesn't help me understand what is frustrating them. So, for those of you with LabVIEW and text language experience, what specific things about LV drive you nuts? ------ Summaries ------- Thanks for all the answers! Some of the issues are answered in the comments below, some exist on other sites, and some are just genuine problems with LV. In the spirit of the original question, I'm not going to try to answer all of these here: check LAVA or NI's website, and you'll be pleasantly surprised at how many of these things can be overcome. Unintentional concurrency No access to tradition text manipulation tools Binary-only source code control Difficult to branch and merge Too many open windows Text has cleaner/clearer/more expressive syntax Clean coding requires a lot of time and manipulation Large, difficult to access API/palette system Mouse required File namespacing: no duplicate files with the same name in memory LV objects are natively by-value only Requires dev environment to view code Lack of zoom Slow startup Memory pig "Giant" code is difficult to work with UI lockup is easy to do Trackpads and LV don't mix well String manipulation is graphically bloated Limited UI customization "Hidden" primitives (yes, these exist) Lack of official metaprogramming capability (not for much longer, though) Lack of unicode support [1]: http://www.lavag.org LAVA

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  • Why can't I get a TRUE return in this prepared statement?

    - by Cortopasta
    I can't seem to get this to do anything but return false. My best guess is that the prepared statement isn't executing, but I have no idea why. private function check_credentials($plain_username, $md5_password) { global $dbcon; $ac = new ac(); $ac->dbconnect(); $userid = $dbcon->prepare('SELECT id FROM users WHERE username = :username AND password = :password LIMIT 1'); $userid->bindParam(':username', $plain_username); $userid->bindParam(':password', $md5_password); $userid->execute(); $id = $userid->fetch(); Return $id; } *EDIT:*I've even tried hard coding the username and password into the function itself to try and isolate the problem like this: private function check_credentials($plain_username, $md5_password) { global $dbcon; $plain_username = "jim"; $md5_username = "waffles"; $ac = new ac(); $ac->dbconnect(); $userid = $dbcon->prepare('SELECT id FROM users WHERE username = :username AND password = :password LIMIT 1'); $userid->bindParam(':username', $plain_username); $userid->bindParam(':password', $md5_password); $userid->execute(); print_r($dbcon->errorInfo()); $id = $userid->fetch(); Return $id; } Still nothing :-/

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  • Logical file not working for SUBFILE/SETLL?

    - by user1516536
    I'm using three logical file with different Record Format where on the first subfile I'm using LF1 and LF2 where on the first subfile I cannot use *LOVAL SETLL it will give me Run Time Error. not sure why? then the program will lead me to second subfile and I'm using LF3 it seems fine. but then If I back to first subfile the subfile turn to blanks.???? why? this my subroutine for building my subfile: C CLRSR BEGSR C EVAL *IN55='0' C WRITE USQLSCTL C EVAL *IN55='1' C ENDSR C* C*BUILDING SUBFILE C BLDSR BEGSR C *LOVAL SETLL USRLGX C EVAL RECNO=0 C EXSR TMISR1 C EXSR REDSR1 C DOW NOT %EOF C IF USRID<>IDD C EXSR MVESR C EXSR DIMSR C MOVE USRID IDD C EVAL RECNO=RECNO+1 C WRITE USQLS C ENDIF C EXSR TMISR1 C EXSR REDSR1 C ENDDO C ENDSR and the related subroutine C TMISR1 BEGSR C READ USRLGX C MOVE USRTI MINTI C ENDSR C REDSR1 BEGSR C READ USRLG C MOVE USRTO MAXTO C ENDSR 6 n the LF I used is USRLG and USRLGX. where both LF refer to the same record format. but each LF has different sorted order. *record format has been RENAME on F-Spec I have this two problem which is: I only can use *LOVAL setll logical-file once only. n the result for coding above sometime it will give result for UserTimeIn some time it equals to blanks.(000000)

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  • Google's Oauth for Installed apps vs. Oauth for Web Apps

    - by burgerguy
    So I'm having trouble understanding something... If you do Oauth for Web Apps, you register your site with a callback URL and get a unique consumer secret key. But once you've obtained an Oauth for Web Apps token, you don't have to generate Oauth calls to the google server from your registered domain. I regularly use my key and token from scripts running via an apache server at localhost on my laptop and Google never says "you're not sending this request from the registered domain." It just sends me the data. Now, as I understand it, if you do Oauth for Installed Apps, you use "anonymous" instead of a secret key you got from Google. I've been thinking of just using the OAuth for Web Apps auth method, then passing that token to an installed app that has my secret code embedded in its innards. The worry is that the code could be discovered by bad people. But what's more secure... making them work for the secret code or letting them default to anonymous? What really goes bad if the "secret" is discovered when the alternative is using "anonymous" as the secret?

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  • Multiple user roles in Ruby on Rails

    - by aguynamedloren
    I am building an inventory management application with four different user types: admin, employee, manufacturer, transporter. I haven't started coding yet, but this is what I'm thinking.. Manufacturers and transporters are related with has_many :through many-to-many association with products as follows: class Manufacturer < ActiveRecord::Base has_many :products has_many :transporters, :through => :products end class Product < ActiveRecord::Base belongs_to :manufacturer belongs_to :transporter end class Transporter < ActiveRecord::Base has_many :products has_many :manufacturers, :through => :products end All four user types will be able to login, but they will have different permissions and views, etc. I don't think I can put them in the same table (Users), however, because they will have different requirements, ie: vendors and manufacturers must have a billing address and contact info (through validations), but admins and employees should not have these fields. If possible, I would like to have a single login screen as opposed to 4 different screens. I'm not asking for the exact code to build this, but I'm having trouble determining the best way to make it happen. Any ideas would be greatly appreciated - thanks!

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  • Asp.net PopupControlExtender inside UpdatePabel

    - by user296422
    Hi, So i use PopupControlExtender (to edit some of the fields) inside ListViewControl which itself is embeded inside an UpdatePanel. The problem is as follows whenever you cause partail postback the popup panels are created client side outside the updatepanel. And you get more clientside controls with the same clientside ID. When you postback with popup panel the server side control eg. Texbox has Text = clientsidecontrol1.text, clientsidecontrol2.text, clientsidecontrol.text3 Is there a way to prevent this. <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Test.aspx.cs" Inherits="Secure_Test" %> <%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="cc1" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <cc1:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"> </cc1:ToolkitScriptManager> <div> <asp:UpdatePanel ID="UpdatePanel1" runat="server"> <ContentTemplate> <asp:Label ID="InputLabel" runat="server" Text="Whatever you put in the textbox"></asp:Label> <br /> <asp:Label runat="server"> <%= DateTime.Now.ToString() %></asp:Label> <br /> <asp:Button ID="Button1" runat="server" Text="Refresh" /> <br /> <asp:LinkButton ID="PopupLB" runat="server">Popup</asp:LinkButton> <br /> <cc1:PopupControlExtender ID="PopupControlExtender1" runat="server" PopupControlID="Panel1" TargetControlID="PopupLB" CommitProperty="Value"> </cc1:PopupControlExtender> <asp:Panel ID="Panel1" runat="server"> <asp:UpdatePanel ID="UpdatePanel2" runat="server"> <ContentTemplate> <asp:TextBox ID="InputTB" runat="server"></asp:TextBox> <asp:Button ID="SubmitBTN" runat="server" Text="Submit" onclick="SubmitBTN_Click" UseSubmitBehavior="false" /> </ContentTemplate> </asp:UpdatePanel> </asp:Panel> </ContentTemplate> </asp:UpdatePanel> </div> </form> </body> </html> using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using AjaxControlToolkit; public partial class Secure_Test : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void SubmitBTN_Click(object sender, EventArgs e) { PopupControlExtender pce = AjaxControlToolkit.PopupControlExtender.GetProxyForCurrentPopup(Page); pce.Commit("Popup"); InputLabel.Text = InputTB.Text; } } To make it easier to test i post the code of an example page i used for testing. To make myself clear here is an example: i click Popup. Type "asdf" in the textbox and click Submit. InputPanel dispalys "asdf" i click Popup again. Type "qwerty" in the textbox and click Submit. InputPanel now displays "qwerty,asdf" When you check it the firebug you get this: <form id="form1" action="Test.aspx" method="post" name="form1"> <div> <input type="hidden" value=";;AjaxControlToolkit, Version=3.0.30930.21526, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e:pl-PL:c83bc095-c5d9-40da-b175-dc46338fcc3a:865923e8:91bd373d:596d588c:411fea1c:e7c87f07:bbfda34c:30a78ec5:42b7c466;" id="ToolkitScriptManager1_HiddenField" name="ToolkitScriptManager1_HiddenField"> </div> <script type="text/javascript"> //&lt;![CDATA[ var theForm = document.forms['form1']; if (!theForm) { theForm = document.form1; } function __doPostBack(eventTarget, eventArgument) { if (!theForm.onsubmit || (theForm.onsubmit() != false)) { theForm.__EVENTTARGET.value = eventTarget; theForm.__EVENTARGUMENT.value = eventArgument; theForm.submit(); } } //]]&gt; </script> <script type="text/javascript" src="/WebResource.axd?d=B2RAZw_YugtketKJqWIbXA2&amp;t=634051184591131846"></script> <script type="text/javascript" src="/ScriptResource.axd?d=zifZiisoqXYJSwLXuAZ4DmtrWVvn9x0W1r7qfDo40UU7q9QYoa5ChdBZD6dDL66f0flKVDmPL2woIPesut_FUpsFZUN2A5sDN7IOqPUOZO41&amp;t=1a45d080"></script> <script type="text/javascript"> //&lt;![CDATA[ if (typeof(Sys) === 'undefined') throw new Error('Ladowanie struktury strony klienta ASP.NET Ajax nie powiodlo sie.'); //]]&gt; </script> <script type="text/javascript" src="/ScriptResource.axd?d=zifZiisoqXYJSwLXuAZ4DmtrWVvn9x0W1r7qfDo40UU7q9QYoa5ChdBZD6dDL66fyxEJaYB3uJEQ0r_TmOPczeBZ1gpFH5a6x4ug130lptsKAcGA3S1vt08sHQo5sFtH0&amp;t=1a45d080"></script> <script type="text/javascript" src="/Secure/Test.aspx?_TSM_HiddenField_=ToolkitScriptManager1_HiddenField&amp;_TSM_CombinedScripts_=%3b%3bAjaxControlToolkit%2c+Version%3d3.0.30930.21526%2c+Culture%3dneutral%2c+PublicKeyToken%3d28f01b0e84b6d53e%3apl-PL%3ac83bc095-c5d9-40da-b175-dc46338fcc3a%3a865923e8%3a91bd373d%3a596d588c%3a411fea1c%3ae7c87f07%3abbfda34c%3a30a78ec5%3a42b7c466"></script> <div> </div> <script type="text/javascript"> //&lt;![CDATA[ Sys.WebForms.PageRequestManager._initialize('ToolkitScriptManager1', document.getElementById('form1')); Sys.WebForms.PageRequestManager.getInstance()._updateControls(['tUpdatePanel1','tUpdatePanel2'], [], [], 90); //]]&gt; </script> <div> <div id="UpdatePanel1"> <span id="InputLabel">qwerty,asdf</span> <br> <span>2010-06-15 18:26:50</span> <br> <input type="submit" id="Button1" value="Refresh" name="Button1"> <br> <a href="javascript:__doPostBack('PopupLB','')" id="PopupLB">Popup</a> <br> </div> </div> <script type="text/javascript"> //&lt;![CDATA[ (function() {var fn = function() {$get('ToolkitScriptManager1_HiddenField').value = '';Sys.Application.remove_init(fn);};Sys.Application.add_init(fn);})();Sys.Application.initialize(); Sys.Application.add_init(function() { $create(AjaxControlToolkit.PopupControlBehavior, {"CommitProperty":"Value","PopupControlID":"Panel1","dynamicServicePath":"/Secure/Test.aspx","id":"PopupControlExtender1"}, null, null, $get("PopupLB")); }); //]]&gt; </script> <div id="Panel1" style="position: absolute; left: 8px; top: 73px; z-index: 1000; display: none; visibility: hidden;"> <div id="UpdatePanel2"> <input type="text" id="InputTB" name="InputTB"> <input type="button" id="SubmitBTN" onclick="javascript:__doPostBack('SubmitBTN','')" value="Submit" name="SubmitBTN"> </div> </div><span style="display: none ! important;"><input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value=""></span><span style="display: none ! important;"><input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value=""></span><span style="display: none ! important;"><input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUJMTkwNzc2NzAzD2QWAgIDD2QWAgIDD2QWAmYPZBYCAgEPDxYCHgRUZXh0BQtxd2VydHksYXNkZmRkZApLPc2nZUC+UkZsCrByuofHMah5"></span><span style="display: none ! important;"><input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEWBQLi2qWdAwKM54rGBgKIkJujDQKbjp+pDQKc7v+tArliNtJzeG8HrfsGBBXIViJAUGMz"></span><div id="Panel1" style="visibility: hidden; position: absolute; left: 8px; top: 73px; z-index: 1000; display: none;"> <div id="UpdatePanel2"> <input type="text" id="InputTB" value="asdf" name="InputTB"> <input type="button" id="SubmitBTN" onclick="javascript:__doPostBack('SubmitBTN','')" value="Submit" name="SubmitBTN"> </div> </div><div id="Panel1" style="display: none; visibility: hidden; position: absolute;"> <div id="UpdatePanel2"> <input type="text" id="InputTB" value="qwerty,asdf" name="InputTB"> <input type="button" id="SubmitBTN" onclick="javascript:__doPostBack('SubmitBTN','')" value="Submit" name="SubmitBTN"> </div> </div></form> InputTB and Panel1 where generated 3 time.

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  • Asynchronous crawling F#

    - by jlezard
    When crawling on webpages I need to be careful as to not make too many requests to the same domain, for example I want to put 1 s between requests. From what I understand it is the time between requests that is important. So to speed things up I want to use async workflows in F#, the idea being make your requests with 1 sec interval but avoid blocking things while waiting for request response. let getHtmlPrimitiveAsyncTimer (uri : System.Uri) (timer:int) = async{ let req = (WebRequest.Create(uri)) :?> HttpWebRequest req.UserAgent<-"Mozilla" try Thread.Sleep(timer) let! resp = (req.AsyncGetResponse()) Console.WriteLine(uri.AbsoluteUri+" got response") use stream = resp.GetResponseStream() use reader = new StreamReader(stream) let html = reader.ReadToEnd() return html with | _ as ex -> return "Bad Link" } Then I do something like: let uri1 = System.Uri "http://rue89.com" let timer = 1000 let jobs = [|for i in 1..10 -> getHtmlPrimitiveAsyncTimer uri1 timer|] jobs |> Array.mapi(fun i job -> Console.WriteLine("Starting job "+string i) Async.StartAsTask(job).Result) Is this alright ? I am very unsure about 2 things: -Does the Thread.Sleep thing work for delaying the request ? -Is using StartTask a problem ? I am a beginner (as you may have noticed) in F# (coding in general actually ), and everything envolving Threads scares me :) Thanks !!

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  • In .NET, Why Can I Access Private Members of a Class Instance within the Class?

    - by AMissico
    While cleaning some code today written by someone else, I changed the access modifier from Public to Private on a class variable/member/field. I expected a long list of compiler errors that I use to "refactor/rework/review" the code that used this variable. Imagine my surprise when I didn't get any errors. After reviewing, it turns out that another instance of the Class can access the private members of another instance declared within the Class. Totally unexcepted. Is this normal? I been coding in .NET since the beginning and never ran into this issue, nor read about it. I may have stumbled onto it before, but only "vaguely noticed" and move on. Can anyone explain this behavoir to me? I would like to know the "why" I can do this. Please explain, don't just tell me the rule. Am I doing something wrong? I found this behavior in both C# and VB.NET. The code seems to take advantage of the ability to access private variables. Sincerely, Totally Confused Class Jack Private _int As Integer End Class Class Foo Public Property Value() As Integer Get Return _int End Get Set(ByVal value As Integer) _int = value * 2 End Set End Property Private _int As Integer Private _foo As Foo Private _jack As Jack Private _fred As Fred Public Sub SetPrivate() _foo = New Foo _foo.Value = 4 'what you would expect to do because _int is private _foo._int = 3 'TOTALLY UNEXPECTED _jack = New Jack '_jack._int = 3 'expected compile error _fred = New Fred '_fred._int = 3 'expected compile error End Sub Private Class Fred Private _int As Integer End Class End Class

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  • Programmatically open an email from a POP3 and extract an attachment

    - by Josh
    We have a vendor that sends CSV files as email attachments. These CSV files contain statuses that are imported into our application. I'm trying to automate the process end-to-end, but it currently depends on someone opening an email, saving the attachment to a server share, so the application can use the file. Since I cannot convince the vendor to change their process, such as offering an FTP location or a Web Service, I'm stuck with trying to automate the existing process. Does anyone know of a way to programmatically open an email from a POP3 account and extract an attachment? The preferred solution would reside on a Windows 2003 server, be written VB.NET and secure. The application can reside on the same server as the POP3 server, for example, we could setup the free POP3 server that comes with Windows Server and pull against the mail file stored on the file system. BTW, we are willing to pay for an off-the-shelf solution, if one exists. Note: I did look at this question but the answer points to a CodeProject solution that doesn't deal with attachments.

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  • How does one target all divs of any webpage but differentiate them in javascript?

    - by Chaz
    So I am trying to create an extension in Chrome (a prototype for a project that I am doing) that targets all of the <div> tags of any web page, hides them or rather doesn't display them until the user clicks the mouse (further explained below). So typing a url into the browser yields a white page. The person clicks, and the first <div> appears (probably the mast head or menu). The user clicks again and the second <div> appears. I have gotten to the point where I can hide or show all <div>'s (the obvious easy part) but I am not sure how to go about targeting each since every website has different id's for them while still using the <div> tag. This is what I need the most help with. This is part of a grander operation called the Web Crank. It's just a physical crank that controls the speed by which a web page loads. Each time you make one full rotation of the crank, one section (the first <div>) of the web page loads. The faster you go, the quicker the page loads. I hope this is clear enough. I am a newbie when it comes to this, but I have done some minor coding in the past and it's not such a big deal. Thanks for your help!

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