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  • Referencing both an old version and new version of the same DLL (VB.Net)

    - by ckittel
    Consider the following situation: WidgetCompany produced a .NET DLL in 2006 called Widget.dll, version 1.0. I consumed this Widget.dll file throughout my VB.Net application. Over time, WidgetCompany has been updating Widget.dll, I never bothered to keep up, continuing to ship version 1.0 of Widget.dll with my software. It's now 2010, my project is now a VB.Net 3.5 application and WidgetCompany has come out with Widget.dll version 3.0. It looks and functions almost identical to Widget.dll version 1.0, using all the same namespaces and type names from before. However, Widget.dll version 3.0 has many run-time breaking changes since 1.0 and I cannot simply cut over to the new version; however, I don't want to continue developing against the 1.0 version and therefore keep digging myself deeper in the hole. What I want to do is do all new development in my project with Widget.dll version 3.0, whilst keeping Widget.dll version 1.0 around until I find time to convert all of my 1.0 consumption to the newer 3.0 code. Now, for starters, I obviously cannot simply reference both Widget.dll (Ver 1.0) and Widget.dll (Ver 3.0) in Visual Studio. Doing so gives me the following message: "A reference to 'Widget.dll' could not be added. A reference to the component 'Widget' already exists in the project." To work around that, I can simply rename version 3.0 Widget.dll to Widget.3.dll. But this is where I'm stuck. Any attempts to reference types found in "the dll" leads to ambiguity and the compiler obviously doesn't have any clue as to what I really want in this or that case. Is there something I can do that gives a DLL a new "root" Namespace or something? For example, if I could say "Widget.dll has a new root namespace of Legacy" then I could update existing code to reference the types found in Legacy.<RootNamespace> namespace while all new code could simply reference types from the <RootNamespace> namespace. Pipe dream or reality? Are there other solutions to situations this (besides "don't get in this situation in the first place")?

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  • code::blocks CPU spike

    - by User1
    I'm using Code::Blocks 8.02 in Ubuntu 9.10. If I leave Code::Blocks open for several hours, I notice that it's consuming a LOT of CPU. If I actually click on the application, the CPU usage immediately drops. Is anyone else having this problem? Is there a solution?

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  • File explorer java

    - by Studer
    I'd like to have some kind of file browser like Windows Explorer inside a Java Application. I just want something that's able to list file inside a folder recursively. Is there a simple way to do this ? I already tried to use JFileChooser but it's not what I want.

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  • Do .NET Timers Run Asynchronously?

    - by MrEdmundo
    I have a messaging aspect of my application using Jabber-net (an XMPP library.) What I would like to do, if for some reason the connection to the Server is ended, is keep trying to connect every minute or so. If I start a Timer to wait for a period of time before the next attempt, does that timer run asynchronously and the resulting Tick event join the main thread, or would I need to start my own thread and start the timer from within there?

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  • Data access pattern, combining push and pull?

    - by andlju
    I need some advice on what kind of pattern(s) I should use for pushing/pulling data into my application. I'm writing a rule-engine that needs to hold quite a large amount of data in-memory in order to be efficient enough. I have some rather conflicting requirements; It is not acceptable for the engine to always have to wait for a full pre-load of all data before it is functional. Only fetching and caching data on-demand will lead to the engine taking too long before it is running quickly enough. An external event can trigger the need for specific parts of the data to be reloaded. Basically, I think I need a combination of pushing and pulling data into the application. A simplified version of my current "pattern" looks like this (in psuedo-C# written in notepad): // This interface is implemented by all classes that needs the data interface IDataSubscriber { void RegisterData(Entity data); } // This interface is implemented by the data access class interface IDataProvider { void EnsureLoaded(Key dataKey); void RegisterSubscriber(IDataSubscriber subscriber); } class MyClassThatNeedsData : IDataSubscriber { IDataProvider _provider; MyClassThatNeedsData(IDataProvider provider) { _provider = provider; _provider.RegisterSubscriber(this); } public void RegisterData(Entity data) { // Save data for later StoreDataInCache(data); } void UseData(Key key) { // Make sure that the data has been stored in cache _provider.EnsureLoaded(key); Entity data = GetDataFromCache(key); } } class MyDataProvider : IDataProvider { List<IDataSubscriber> _subscribers; // Make sure that the data for key has been loaded to all subscribers public void EnsureLoaded(Key key) { if (HasKeyBeenMarkedAsLoaded(key)) return; PublishDataToSubscribers(key); MarkKeyAsLoaded(key); } // Force all subscribers to get a new version of the data for key public void ForceReload(Key key) { PublishDataToSubscribers(key); MarkKeyAsLoaded(key); } void PublishDataToSubscribers(Key key) { Entity data = FetchDataFromStore(key); foreach(var subscriber in _subscribers) { subscriber.RegisterData(data); } } } // This class will be spun off on startup and should make sure that all data is // preloaded as quickly as possible class MyPreloadingThread { IDataProvider _provider; MyPreloadingThread(IDataProvider provider) { _provider = provider; } void RunInBackground() { IEnumerable<Key> allKeys = GetAllKeys(); foreach(var key in allKeys) { _provider.EnsureLoaded(key); } } } I have a feeling though that this is not necessarily the best way of doing this.. Just the fact that explaining it seems to take two pages feels like an indication.. Any ideas? Any patterns out there I should have a look at?

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  • Problem with jquery-1.3.2.min.js JQuery

    - by Geetha
    Hi, I was trying to add a Jquery file into my application and it gave me following error: Warning 22 Error updating JScript IntelliSense: C:\Users\Desktop\jquery-1.3.2.min.js: Object doesn't support this property or method @ 18:9345 Geetha.

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  • RijndaelManaged: IV Generation?

    - by cam
    I want to implement the most secure, and most reliable form of symmetric key cryptography in my application. The user should input a password to encrypt/decrypt, and that's all. For RijndaelManaged, one must enter a key and an IV. I'm not sure how to address the situation. Right now, I have the entered password being hashed by SHA256 and then being used as the key for the Rijndael. What do I use for the IV? Another password?

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  • how to do iis 7 url rewrite to avoid processing static html file requests for an aspnet mvc applicat

    - by ROHITH
    currently i am developing an aspnet mvc application on iis 5.5.So i have given wild card mapping.I know if we give wild card mapping ,all request go through the asp.net execution pipeline pipeline.(correct me if i am wrong).and in iis7 or above ,we have in built url rewrite engine.What i want to know,in iis7 or above will a request to static html page will go through the aspnet mvc execution pipeline?

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  • Dealing with missing messages in JavaScript when using BOSH

    - by JamieD
    We recently went into private beta on our flagship product and had a small launch event. Unfortunately the venue had a terrible wireless connection and packets were being dropped left right and centre causing havoc with out system, basically it wasn't able to work at all! Luckily we were able to switch to a different network and rescue the demo. This highlighted something that I knew was already an issue but hadn't appreciated quite how much of an issue it could be. Our system relies heavily on BOSH and has a rather large JavaScript code base which now works rather well under good network conditions. However we need to make it work well under bad network conditions as well. Due to the way that XMPP works, a fire and forget system, it's not easy to tell if a message you sent, or were supposed to receive, was actually sent or received. For instance, we have an offer system, one user will send an offer to another over BOSH. When this message is received by the server a message is published to the offering users offers_sent PEP node and a similar message to the receiving users offers_received PEP node. While the sending user is able to tell if their offer was send (relatively) easily, if the notification to the receiving user is never received that user will never know it missed a message. A little about out JavaScript setup, it has 4 main layers: StropheJS An MVC framework for dealing with low level tasks and to build on top of An application layer which contains the app logic routes, controllers models etc. as well as a browser cache of the model data A UI layer that receives events and publishes events to and from the application layer One way to solve the missing messages issue would be to periodically check the PEP nodes for new data that the browser doesn't know about. If a new message was discovered the browsers cache would be invalidated and all new data would be requested from the server. I'm not sure this is the best way to go and it also doesn't cover all situations. We certainly don't want to get into the situation where we are sending messages to confirm the previous message was received at it's destination as this would double the network traffic. With the number of real time websites growing daily this is an issue that must have been encountered by other developers, it would be interesting to see how it's been solved by others. As far as I can see there are two situations in which messages go missing: On poor connections messages are not sent or received due to the packets being dropped Involving navigating between pages, a message is received by the browser but is not fully processed and stored in the local cache before the page is unloaded. Or a message is added to the send queue but never sent before the page is unloaded I suspect the hardest issue to solve will be number 2. Any thoughts on the subject would be much appreciated.

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  • How can i combine crystal reports and JAVA SWT?

    - by Armin
    I have to create reports from my application (java, swt). For reports i am using crystal reports, but i have problem, i can't find SWT code that enables me to open (create) and save report. I have found Swing code that enables me to do that, but i cant find SWT code. So can somebody explain me, or give me code, or tutorial that will help me to to that. Tnx.

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  • Problem in GWT realex integration while registering new card

    - by Rupeshit
    In my application I am using realex to pay amount.While doing that I registered new user with realex but after that when I tried to add new card then I am getting response from realex that Sha1 hash incorrect.I checked sha1 hash structure it is all right but still I am getting this error.If anyone know this so please tell me.

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  • How strict to be when using Qt framework?

    - by toffeehoops
    I'm building a Qt application that needs to use libssh, a SSH client library. libssh (understandably) performs its own network connections, however Qt has its own infrastructure for network connections (QTcpSocket etc). Should I worry about these differences? Should I be trying to make libssh make network connections via QTcpSocket... Or if it works fine on the platforms I'm targeting, is that good enough?

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  • Should BASIC continue to be recommended for non-programmers and beginners?

    - by Casey
    I just came across a new BASIC implementation for Google Android application called Simple. You can read about it here: http://google-opensource.blogspot.com/2009/07/programming-made-simple.html Clearly, a lot of time and effort has been recently put into enabling this functionality for Android. Should the software industry continue to encourage non-programmers into learning BASIC, or are modern languages like C#, Python, Ruby more appropriate at this time?

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  • Check on null reference

    - by Neir0
    Hello, i have the follow code: searchResults.SearchResultCollection.Add( new SearchResult() { Header = HttpUtility.HtmlDecode( htmlDocument.DocumentNode .SelectSingleNode(initialXPath + "h3") .InnerText), Link = HttpUtility.HtmlDecode( htmlDocument.DocumentNode .SelectSingleNode(initialXPath + "div/cite") .InnerText) } ); Sometimes htmlDocument.DocumentNode.SelectSingleNode(....) returns null and my application crashed with NullReferenceException. Ofcourse i can write code which check returned value on null reference but then code will be overly verbose. What is graceful way to do that?

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  • Attaching Files to QC defect by Java code from local machine

    - by Rahul
    Hi All, When we open a defect in QC generally we need to attach the logs of the server i want to Make an application such that It will take files(logs from all the relevant server) and stores in our local machine and then we can rar those files and directly attach it to QC defect mentioned by person opening defect Now my question is how can i access the defect and attach the files to that particular defect Please give your suggestions if any

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  • Can a product that uses BouncyCastle be exported from the UK

    - by swisstony
    We are doing work for a company, based in the UK, who are planning on developing an application that uses the BouncyCastle.Crypto.dll. They intend to make their product (including the crypto dll) available for download over the Internet. Are there UK restrictions on the export of crypto software that would prevent them from doing this? From Wikipedia, I understand it's okay to export it from the US, but not sure about the UK.

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  • Java Unicode encoding

    - by Marcus
    A Java char is 2 bytes (max size of 65,536) but there are 95,221 Unicode characters. Does this mean that you can't handle certain Unicode characters in a Java application? Does this boil down to what character encoding you are using?

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  • Installing Automator Actions using xcode project

    - by Shakti
    Hi. I have developed some automator actions for osirix. Now i want to install them using xcode project. But when i drag .action files to Resources folder, its actually adding the folders for each action. Also when i build the project and check the application bundle, its not showing any of the actions which i have added to Resources folder. How to do this using Xcode project? Can any body help me out?

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