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  • Desktop development versus Web development

    - by eKek0
    What are the advantages and disadvantages of one model and the other? Why and when would you choose one or the other? If you were going to build a business application, which is the best approach for you? To make this a fair question, is better if you post only quantified non-subjective answers.

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  • How to use HttpContext.Current on asynchronous threads?

    - by Eran Betzalel
    I've a schedule tasks mechanism (very similar to DotNetNuke's) in my business logic library (a DLL that is used by ASP.Net website). When I use HttpContext.Current inside on of these tasks, it returns with a null value, because the current async thread (or task) was not initiated from a user's request. How can I use HttpContext.Current in these asynchronous threads? P.S - I think my question is more best-practices related than technical.

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  • How does ASP.Net MVC differ from Classic ASP (not ASP.Net--the original ASP)

    - by LuftMensch
    I'm trying to get a high-level understanding of ASP.Net MVC, and it has started to occur to me that it looks a lot like the original ASP script. Back in the day, we were organizing our "model"/business logic code into VBScript classes, or into VB COM components. Of course, now we have the additional power of c# and the .net framework classes. Besides the high-level oo and other capabilities in c# and .Net, what are the other major differences between the original ASP and ASP.Net MVC?

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  • Advantages of Migrating Flex3 App to Flex4

    - by Srirangan
    Hi guys, What are the advantages of migrating a Flex 3 app (Java backend, BlazeDS, Spring, Hibernate) to Flex 4? One of the biggest advantages of Flex 4 is design. Assuming that design / UI isn't a big driver for the business right now as compared to performance, what are the other factors we can highlight? We have implemented Cairngorm and Swiz on the App (with a gradual "roll out" of Cairngorm planned for the future). Any opinions? Thanks, Sri

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  • Multi-step Workflows: make Workflow A depend on results of Workflow B and/or Workflow C

    - by Joey
    I have been tasked with creating a Software Installation Approval section for our Intranet. When a person requests that a particular piece of software be installed on their workstation, we need to get IT approval and then business approval. Once those are obtained, it is to be installed. I am using Sharepoint Designer to do this. I have List A, where the user enters the information on the requested software. Workflow A then creates a Task in List B, which is then assigned to the IT approver. Workflow B works on List B on item creation, setting the due dates, titles, and other fields, and then pauses until the due date. The IT approver works with the business side and completes the task. Once List B task is complete, the item in List A should be marked as complete -- I have everything up to this point working fine. I want to make this more robust in 2 ways. As the only real option is to mark List B task as "completed", which essentially means "Approved", we have no way of really denying a request. What I want to add is the option to approve or deny a request through the task on List B -- if it is approved, I want the item in List A to continue to show "In Progress" with a custom status of "Approved", and I want to create a new task for software installation; once the installation task is marked as completed, then I want List A to show "Completed" with a status of "Installed". If it is denied, I want the item in List A to show as "Completed", with a status of "Denied". The problem is, I'm not even sure where to start making these modifications. Creating and modifying the custom status fields isn't that big of an issue -- I have messed around with this and I'm fairly confident I can do this easily. My main concern is that I know I will need a Workflow C, but I don't know where or how to trigger this to get the results I need. I've managed to get Workflows A and B working fine, but anything beyond this is really pushing the limit of my knowledge. It's probably obvious that I am rather new to Sharepoint workflows. I was very much thrust into this position and I am still feeling my way around. Thanks in advance for any help!

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  • Not your usual "The multi-part identifier could not be bound" error

    - by Eugene Niemand
    I have the following query, now the strange thing is if I run this query on my development and pre-prod server it runs fine. If I run it on production it fails. I have figured out that if I run just the Select statement its happy but as soon as I try insert into the table variable it complains. DECLARE @RESULTS TABLE ( [Parent] VARCHAR(255) ,[client] VARCHAR(255) ,[ComponentName] VARCHAR(255) ,[DealName] VARCHAR(255) ,[Purchase Date] DATETIME ,[Start Date] DATETIME ,[End Date] DATETIME ,[Value] INT ,[Currency] VARCHAR(255) ,[Brand] VARCHAR(255) ,[Business Unit] VARCHAR(255) ,[Region] VARCHAR(255) ,[DealID] INT ) INSERT INTO @RESULTS SELECT DISTINCT ClientName 'Parent' ,F.ClientID 'client' ,ComponentName ,A.DealName ,CONVERT(SMALLDATETIME , ISNULL(PurchaseDate , '1900-01-01')) 'Purchase Date' ,CONVERT(SMALLDATETIME , ISNULL(StartDate , '1900-01-01')) 'Start Date' ,CONVERT(SMALLDATETIME , ISNULL(EndDate , '1900-01-01')) 'End Date' ,DealValue 'Value' ,D.Currency 'Currency' ,ShortBrand 'Brand' ,G.BU 'Business Unit' ,C.DMRegion 'Region' ,DealID FROM LTCDB_admin_tbl_Deals A INNER JOIN dbo_DM_Brand B ON A.BrandID = B.ID INNER JOIN LTCDB_admin_tbl_DM_Region C ON A.Region = C.ID INNER JOIN LTCDB_admin_tbl_Currency D ON A.Currency = D.ID INNER JOIN LTCDB_admin_tbl_Deal_Clients E ON A.DealID = E.Deal_ID INNER JOIN LTCDB_admin_tbl_Clients F ON E.Client_ID = F.ClientID INNER JOIN LTCDB_admin_tbl_DM_BU G ON G.ID = A.BU INNER JOIN LTCDB_admin_tbl_Deal_Components H ON A.DealID = H.Deal_ID INNER JOIN LTCDB_admin_tbl_Components I ON I.ComponentID = H.Component_ID WHERE EndDate != '1899-12-30T00:00:00.000' AND StartDate < EndDate AND B.ID IN ( 1 , 2 , 5 , 6 , 7 , 8 , 10 , 12 ) AND C.SalesRegionID IN ( 1 , 3 , 4 , 11 , 16 ) AND A.BU IN ( 1 , 2 , 3 , 4 , 5 , 6 , 8 , 9 , 11 , 12 , 15 , 16 , 19 , 20 , 22 , 23 , 24 , 26 , 28 , 30 ) AND ClientID = 16128 SELECT ... FROM @Results I get the following error Msg 8180, Level 16, State 1, Line 1 Statement(s) could not be prepared. Msg 4104, Level 16, State 1, Line 1 The multi-part identifier "Tbl1021.ComponentName" could not be bound. Msg 4104, Level 16, State 1, Line 1 The multi-part identifier "Tbl1011.Currency" could not be bound. Msg 207, Level 16, State 1, Line 1 Invalid column name 'Col2454'. Msg 207, Level 16, State 1, Line 1 Invalid column name 'Col2461'. Msg 207, Level 16, State 1, Line 1 Invalid column name 'Col2491'. Msg 207, Level 16, State 1, Line 1 Invalid column name 'Col2490'. Msg 207, Level 16, State 1, Line 1 Invalid column name 'Col2482'. Msg 207, Level 16, State 1, Line 1 Invalid column name 'Col2478'. Msg 207, Level 16, State 1, Line 1 Invalid column name 'Col2477'. Msg 207, Level 16, State 1, Line 1 Invalid column name 'Col2475'. EDIT - EDIT - EDIT - EDIT - EDIT - EDIT through a process of elimination I have found that following and wondered if anyone can shed some light on this. If I remove only the DISTINCT the query runs fine, add the DISTINCT and I get strange errors. Also I have found that if I comment the following lines then the query runs with the DISTINCT what is strange is that none of the columns in the table LTCDB_admin_tbl_Deal_Components is referenced so I don't see how the distinct will affect that. INNER JOIN LTCDB_admin_tbl_Deal_Components H ON A.DealID = H.Deal_ID

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  • Crystal Report not working on Windows server 2008

    - by gofor.net
    Crystal Report is working fine on local database,but its not working on windows server 2008 when i deployed it on IIS 7. I have run Crystal report run time also.I copied CrystalDecisions.CrystalReports.Engine.dll, CrystalDecisions.ReportSource.dll and CrystalDecisions.Shared.dll from C:\Program Files (x86)\Business Objects\Common\3.5\managed\dotnet2 into bin folder of my application.Still its not showing anything and not throwing any error also. It will be very kind if someone help me. Thanking you.

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  • Sales Career in Cloud Computing

    - by ricky
    I am working with a Google's business partner and selling Google Apps which is based on cloud computing concept. As we all know cloud computing is ready to capture the IT world, So I just wanted to take suggestion from you experts here about the sales career in Cloud computing I am a Post graduate in Sales and Marketing and planning to dig deeper into Cloud computing from sales point of view. I would appreciate if you can assist me with my path creation to achieve good career in cloud computing. Regards, Jason Robb

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  • Have Button re-appear immediately after clicking button in ListView row

    - by Soeren
    I have 4 buttons on a page. Each button opens a modal window and let’s the user input data in a form. When the user hits the save button in the modal, a ListView appears on the page with the submitted data. The button the user clicked to open the modal window is set to visible=false, so it’s gone when the row is added to the ListView. Now there are 3 buttons and the same goes for those; when the user hits a button, a modal appears, and when the modal form is submitted, the button disappears and a row is added to the ListView. In the ListView row, there is a delete button. When this button is clicked, the row is deleted and the button that was initially clicked to add this row (and open the modal), SHOULD reappear, but it doesn’t. The row disappears, but I have to refresh the page before the button comes back. There is a ScriptManager on the masterpage, so I guess this is an AJAX partial refresh issue. I tried adding different events, but I can’t find the one that fires at the right time. I use an ObjectDataSource to fill the ListView, and the data comes from a database, wrapped in a business object. This code loads a business object in a List< and checks if the user inserted an item of a specific type. If he did, the button he used to open the modal is hidden. This works fine (maybe not the most elegant) _goals = GoalManager.GetGoalsByUser(UserID); if (_goals != null) { foreach (Goal _goalinlist in _goals) { if (_goalinlist.GoalType == 1) { Button1.Visible = false; goalid1 = true; } if (_goalinlist.GoalType == 2) { Button2.Visible = false; goalid2 = true; } if (_goalinlist.GoalType == 3) { Button3.Visible = false; goalid3 = true; } if (_goalinlist.GoalType == 4) { Button4.Visible = false; goalid4 = true; } } } As you can see, I tried setting a boolean, and then check it when the page is re-loaded. But the problem (I guess) is that the whole page isn't refreshed when the delete button is clicked in the ListView. This is the delete button in the ListView: <asp:ImageButton ID="ImageButton2" runat="server" CommandName="Delete" CausesValidation="false" ToolTip="Delete" CommandArgument='<%#Eval("GoalID")%>' ImageUrl="delete.gif" OnClientClick="return confirm('Delete this post?');" CssClass="button"/> I guess the question is, how do I make the button re-appear right after the ListView button is clicked?

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  • What is the best way to use EF 4 and DDD

    - by William
    I would like to use EFf 4 as my ORM in my DDD project. I am going to generate my model based on my classes. Should I create classes that are basically dto objects for my business objects to consumer or should I implement the actuall BO classes in my EF model?

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  • When to use a user defined Exception and some good examples/best Practices?

    - by Atomiton
    I would assume that most User-defined Exceptions are for Business Logic level exceptions, but what are some good reasons to use a User-Defined Exception and what are some good examples? Is a user-defined exception's only advantage that you can define a consistent Error Message? What logic can be written inside exceptions to make them truly more useful? After all, can't you just do this: throw new Exception("Some Error Message");

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  • Best practice to handle Parent Form Child Form relation using Presentation Model

    - by Rajarshi
    According to Presentation Model notes by Martin Fowler and also on MSDN documentation about Presentation Model, it is explained that the Presentation Model Class should be unaware of the UI class and similarly Business Model Class should be unaware of the Presentation Model class. The UI should databind extensively to the Presentation Model, the Presentation Model in turn will co-ordinate with one or more Domain/Business Model objects to get the job done. The Presentation Model basically presents the Domain Model data in a way to facilitate maximum data binding in UI, allowing the UI take as less decisions as possible and thus increase testability of Presentation behaviours. This also makes the presentation model class generic, i.e. agnostic of any particular UI technology. Now, consider there is a List form (say CustomerList) and there is another Root form (say Customer) and there is a Use Case of allowing to Edit a Customer from the CustomerList form on a button click. For simplicity of discussion, consider that some actions took place when Customer List is opened from menu (i.e. Customer menu clicked) and the Customer List has been shown from the Menu click event. Now as per the above Use Case, I need to open the Customer Root UI (single Customer) from the Customer List. How do I do that? Build necessary objects (BusinessModel, PresentationModel, UI) in click event of Edit button and call CustomerEdit UI from there? Build the CustomerEdit UI from Presentation Model Class and show UI from presentation model? this can be done in any of the two ways below - a. Create objects in the following sequence DomainModel-PresentationModel-UIForm b. Use Unity.Resolve(); Either ways, Presentation Model is violated as the P model now has to the refer the concrete UI assembly, where CustomerEdit is located. Also the P Model has to refer and use a WinForm directly making it less UI technology agnostic. Even though the violations are in theory and can be ignored, I would still seek the community's opinion about whether I am going wrong direction. Please suggest if there's a better way to call the Child Form from the List (Parent) Form. Rajarshi

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  • How to add a skin engine to asp.net MVC system

    - by Am
    I'm implementing a solution in ASP.NET MVC that later can be applied to couple of other fields. To do so it will require to re-brand the UI even though the underlying business logic wont need to change. I'd like to write the code in such a way that will allow other developers to only develop code that will only changes the UI. This is similar to the way that themes can be written against Wordpress Blog software. Can any one suggest how to organize my project to make such feature work?

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  • Would you use IdeaBlade with DevExpress controls for an N-Tier system?

    - by ERaubenheimer
    I’ve worked on numerous projects where we’ve developed our own frameworks and platforms from scratch and it was never really successful and I’m re-evaluating to rather use a commercial product to assist us with our product development. If you get a chance to develop an N-Tier system with a SOA layer from scratch would you recommend IdeaBlade with DevExpress? If not what other combinations would you recommend? Requirements: - SOA Layer - Business components - DAL with database independency as optional - Developer support - Easy upgradable - .NET - No Royalties

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  • Domain driven design: Manager and service

    - by ryudice
    I'm creating some business logic in the application but I'm not sure how or where to encapsulate it, I've used the repository pattern for data access, I've seen some projects that use DDD that have some classes with the "Service" suffix and the "manager" suffix, what are each of this clases suppose to take care of in DDD?

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  • Paypal IPN Handler for Cart

    - by kimmothy16
    Hey everyone! I'm using a Paypal add to cart button for a simple ecommerce website. I had a Paypal IPN handler written in PHP that was successfully working for 'Buy it Now' buttons and purchasing one item at a time. I would run a database query each time to update the store's inventory to reflect the purchase. Now I'm upgrading this store to a 'cart' version so people could check out with multiple items at a time. Would anyone be able to tell me, in general, how my IPN handler would need to be altered to accommodate this? I'm unsure of what a response from Paypal looks like for a cart purchase as opposed to a buy it now purchase. Thanks, any help or examples of working IPN cart scripts would be very appreciated! My current code is below.. // Paypal POSTs HTML FORM variables to this page // we must post all the variables back to paypal exactly unchanged and add an extra parameter cmd with value _notify-validate // initialise a variable with the requried cmd parameter $req = 'cmd=_notify-validate'; // go through each of the POSTed vars and add them to the variable foreach ($_POST as $key => $value) { $value = urlencode(stripslashes($value)); $req .= "&$key=$value"; } // post back to PayPal system to validate $header .= "POST /cgi-bin/webscr HTTP/1.0\r\n"; $header .= "Content-Type: application/x-www-form-urlencoded\r\n"; $header .= "Content-Length: " . strlen($req) . "\r\n\r\n"; // In a live application send it back to www.paypal.com // but during development you will want to uswe the paypal sandbox // comment out one of the following lines $fp = fsockopen ('www.sandbox.paypal.com', 80, $errno, $errstr, 30); //$fp = fsockopen ('www.paypal.com', 80, $errno, $errstr, 30); // or use port 443 for an SSL connection //$fp = fsockopen ('ssl://www.paypal.com', 443, $errno, $errstr, 30); if (!$fp) { // HTTP ERROR } else { fputs ($fp, $header . $req); while (!feof($fp)) { $res = fgets ($fp, 1024); if (strcmp ($res, "VERIFIED") == 0) { $item_name = stripslashes($_POST['item_name']); $item_number = $_POST['item_number']; $item_id = $_POST['custom']; $payment_status = $_POST['payment_status']; $payment_amount = $_POST['mc_gross']; //full amount of payment. payment_gross in US $payment_currency = $_POST['mc_currency']; $txn_id = $_POST['txn_id']; //unique transaction id $receiver_email = $_POST['receiver_email']; $payer_email = $_POST['payer_email']; $size = $_POST['option_selection1']; $item_id = $_POST['item_id']; $business = $_POST['business']; if ($payment_status == 'Completed') { // UPDATE THE DATABASE }

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  • Sonar integration in hudson, meet "container state was: CONSTRUCTED"

    - by larry cai
    Environment: hudson/sonar/maven2 in ubuntu locally with default parameters And I got the log from hudson below, I can't figure out where is the problem. [INFO] Sonar host: http://localhost:9000 [INFO] Sonar version: 2.0.1 [INFO] [sonar-core:internal {execution: default-internal}] [INFO] Database dialect class org.sonar.api.database.dialect.Derby [INFO] ------------- Analyzing Game of Life business logic module [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Can not execute Sonar Embedded error: Can not analyze the project Cannot stop. Current container state was: CONSTRUCTED [INFO] ------------------------------------------------------------------------ [INFO] Trace org.apache.maven.lifecycle.LifecycleExecutionException: Can not execute Sonar

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  • Payment Gateway Integration asp.net c# 2.0

    - by mvkotekar
    Myself mendy, i am designing web application, The business required to integrate payment gateway. I searched on site regarding the flow but i could not get much info on MSDN. I want to make payment gateway using SSL and 3rd party merchant account. How can i do it ? some info regarding payment gateway could guid me to start developing the component.

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  • CSLA.net - Inheritable Base classes

    - by JMSA
    I was reading the book "Expert C# 2005 Business Objects". The book describes various base classes to be inherited by various classes to solve real-world problems. But the book does not provide examples of all those classes. Can anyone give me all of those examples (with reason) to better understand CSLA? For example, Which real-world objects are to be considered as Read-only Root Objects (Student/Product/Order, etc.)? And Why?

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  • GRE Tunnel over IPsec with Loopback

    - by Alek
    I'm having a really hard time trying to estabilish a VPN connection using a GRE over IPsec tunnel. The problem is that it involves some sort of "loopback" connection which I don't understand -- let alone be able to configure --, and the only help I could find is related to configuring Cisco routers. My network is composed of a router and a single host running Debian Linux. My task is to create a GRE tunnel over an IPsec infrastructure, which is particularly intended to route multicast traffic between my network, which I am allowed to configure, and a remote network, for which I only bear a form containing some setup information (IP addresses and phase information for IPsec). For now it suffices to estabilish a communication between this single host and the remote network, but in the future it will be desirable for the traffic to be routed to other machines on my network. As I said this GRE tunnel involves a "loopback" connection which I have no idea of how to configure. From my previous understanding, a loopback connection is simply a local pseudo-device used mostly for testing purposes, but in this context it might be something more specific that I do not have the knowledge of. I have managed to properly estabilish the IPsec communication using racoon and ipsec-tools, and I believe I'm familiar with the creation of tunnels and addition of addresses to interfaces using ip, so the focus is on the GRE step. The worst part is that the remote peers do not respond to ping requests and the debugging of the general setup is very difficult due to the encrypted nature of the traffic. There are two pairs of IP addresses involved: one pair for the GRE tunnel peer-to-peer connection and one pair for the "loopback" part. There is also an IP range involved, which is supposed to be the final IP addresses for the hosts inside the VPN. My question is: how (or if) can this setup be done? Do I need some special software or another daemon, or does the Linux kernel handle every aspect of the GRE/IPsec tunneling? Please inform me if any extra information could be useful. Any help is greatly appreciated.

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  • Windows 7 Media Center PC not displaying MKV files properly

    - by David
    Does anyone know why Windows Media Center wouldn't correctly display a 16x9 video? I just upgraded my home-built HTPC from Vista Ultimate (hey, it was a giveaway) to Windows 7 Ultimate - clean install. After that, I installed the Divx7 beta (to get .MKV support) and AC3filter (so I could HEAR the MKV files). Previously, under Vista Ultimate (32 bit), I had Arcsoft's Total Theater Pro for playing Blu-Rays and MKV decoding under Media Center. Now when I play a 720p 16x9 MKV file, I get some 'letterboxing' - like it's halfway between 4x3 and 16x9 - with the aspect ration looking alightly squished as a result. Here's the wierd part. If I use the Media Center connection software in my XBox 360 - it plays perfectly, filling the 16x9 screen edge-to-edge, just like Vista's WMC software USED to. Of course, beats the network up because the XBox goes to the HTPC, the HTPC goes to my WHS machine to fetch the data, it comes back to the HTPC, gets transcoded and streamed back to the Xbox. I'm running the latest drivers for an NVidia card (as fetched by Windows 7). I have no idea WHY this is because if I play "ordinary" (i.s. SD) Divx files that are 16x9, they play just fine, scaled right up to my screen's edges. It puzzles me as to why the same machine that properly converts the bits for the Xbox can't display/scale them properly for the attached display. Mind you, Windows Media Player exhibits the same symptoms. Ideas?

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  • JEE6 Advice - how viable is it?

    - by user294740
    Hello! A friend and I are trying to start our own UK based business. We both know Java and thought we'd try to implement it using JEE6 and JSP. Can anyone offer some advice on how viable it would be and provide us with resources to consult?

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  • Daylight saving time and Timezone best practices

    - by Oded
    I am hoping to make this question and the answers to it the definitive guide to dealing with daylight saving time, in particular for dealing with the actual change overs. If you have anything to add, please do Many systems are dependent on keeping accurate time, the problem is with changes to time due to daylight savings - moving the clock forward or backwards. For instance, one has business rules in an order taking system that depend on the time of the order - if the clock changes, the rules might not be as clear. How should the time of the order be persisted? There is of course an endless number of scenarios - this one is simply an illustrative one. How have you dealt with the daylight saving issue? What assumptions are part of your solution? (looking for context here) As important, if not more so: What did you try that did not work? Why did it not work? I would be interested in programming, OS, data persistence and other pertinent aspects of the issue. General answers are great, but I would also like to see details especially if they are only available on one platform. Summary of answers and other data: (please add yours) Do: Always persist time according to a unified standard that is not affected by daylight savings. GMT and UTC have been mentioned by different people. Include the local time offset (including DST offset) in stored timestamps. Remember that DST offsets are not always an integer number of hours (e.g. Indian Standard Time is UTC+05:30). If using Java, use JodaTime. - http://joda-time.sourceforge.net/ Create a table TZOffsets with three columns: RegionClassId, StartDateTime, and OffsetMinutes (int, in minutes). See answer Check if your DBMS needs to be shutdown during transition. Business rules should always work on civil time. Internally, keep timestamps in something like civil-time-seconds-from-epoch. See answer Only convert to local times at the last possible moment. Don't: Do not use javascript date and time calculations in web apps unless you ABSOLUTELY have to. Testing: When testing make sure you test countries in the Western and Eastern hemispheres, with both DST in progress and not and a country that does not use DST (6 in total). Reference: Olson database, aka Tz_database - ftp://elsie.nci.nih.gov/pub Sources for Time Zone and DST - http://www.twinsun.com/tz/tz-link.htm ISO format (ISO 8601) - http://en.wikipedia.org/wiki/ISO_8601 Mapping between Olson database and Windows TimeZone Ids, from the Unicode Consortium - http://unicode.org/repos/cldr-tmp/trunk/diff/supplemental/windows_tzid.html TimeZone page on WikiPedia - http://en.wikipedia.org/wiki/Tz_database StackOverflow questions tagged dst - http://stackoverflow.com/questions/tagged/dst StackOverflow questions tagged timezone - http://stackoverflow.com/questions/tagged/timezone Other: Lobby your representative to end the abomination that is DST. We can always hope...

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