I need to develop a simple application that allows the user to write some text and save it in the DB. It needs to be reasonably secure.
Unfortunately... it needs to work on both Windows and Mac, desktops, tablets, and all mobiles:(
Is there any such technology?:(
Give a try to Qt - it's cross-platform, reliable and relatively easy to use.
Depending on what you want to do, an alternative would be to write a web application and let users access it with their web browser.
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I make a game using vb.net & wpf. But I want this run on Windows/Linux/Mac.
How can I do it?
I'm sorry my english is really bad :D I use Google translate.
Implementing a solution for multiple platforms is not an easy task and you need to be familiar with all the platforms you plan to support, starting with trivialities such as different path schemes and ending with checking every reference you require by your project settings for its compatibility to the target platform.
Please have a look at http://www.mono-project.com. When you install the mono package to your system, you can run your compiled .exe as it is from the shell under certain circumstances.
Obviously, you need to decide whether you try to create one application that runs on all target platforms OR if you want to create platform specific applications all referencing to the same game engine.
If you stick very close to the framework not using external references, chances are higher to achieve the former. If the main logic of your game can easily be compartmentalized into a dedicated project, the latter is the way to go.
In general, cross-plattform compatibility is more easily to achieve if your application backend consists of a console application to be accessed by a webbrowser installed on the system - using a web frontend though. But as long as you do not require accelerated graphics, this should be feasible.
I have a Compact Framework 2.0 application written years ago in VB.NET using VS2005. The application uses a local SQL compact database (.sdf) file. The application has been running on HP iPAQs for years.
I want to look at making this available to Windows Phone users. Any suggestions for the easiest way to do this? When I say easy I mean quick I suppose, the client is not interested in paying for it, so if there was a crude way to implement/achieve it I would be prepared to go that route.
The alternative is building a new Windows Phone app, my first. Which would be fun, but not very good for the balance sheet! Thanks all.
Probably the only option available is going to be a wholesale rewrite of the application. If you were strategic in your original design and kept the business logic and UI separate, then that code will transfer pretty easily, but the data access code will have to be rewritten and all of the UI code will have to be rewritten.
I have a desktop app based on HTML/JS that needs WebKit to function at a reasonable speed. Normally, I would live with IE behaving badly, but its JS engine is just too slow.
I would normally go to Appcelerator for this, but it seems they have discontinued their desktop SDK and left it for the "community"...
This needs to function on Windows PCs, or I would just use Fluid (http://fluidapp.com)...
Is there a simple Webkit wrapper that I can use, or should I build one really quick in something like Qt. I haven't used Qt in a while, so I'd have to look at it again and make sure WebKit is implemented in it...
While it is somewhat node.js-oriented, AppJS may offer what you're looking for. If it doesn't already support other scripting languages, it might at least provide a good example to start from.
Update: in the time that's passed since my original answer, it seems node-webkit fills a similar role but has gathered and maintained more momentum than AppJS. It's a little more focused, in that it doesn't attempt to provide much additional "framework" on top of simply exposing the node.js API to the window's JS context.
There's also https://github.com/atom/atom-shell, which I just learned of and may be similar.
One other thing to note is that (presumably with either, but at least with node-webkit), you MUST be cautious of any XSS-like vulnerability in your app that an attacker could exploit to gain complete access to the user's native machine. So if you are simply needing to package an offline web app in a downloadable desktop distribution, you may wish to research more PhoneGap-like solutions (e.g. Mac OS X as PhoneGap platform) or a plain web view wrapper (like mentioned in the OP) that do not expose an entire OS-level native API — as node.js does — into the JavaScript environment.
I am new to smartphone application Development, I have worked with .NET web and Windows Forms applications and only used the C# language.
I am planning to make a simple application which can run on all mobile OSes, like BlackBerry, Windows Mobile, Android phones, iPhone, etc. On searching I found that all have different OSes and uses different languages. I can use the C# language and .NET since I am aware about it. After some thinking, is it possible to make a web-based application using normal website coding but make it work like an application?
Please suggest some method to make a application which is possible to run on all smartphones. What technology or tools can be used for developing it?
The best approach to create truly cross platform app is to use HTML5 and JavaScript. All the other options will be painful. However, of course you can't access all the features with these web applications.
One interesting framework for creating HTML5/JavaScript based apps is PhoneGap (http://www.phonegap.com/). It has quite many API's available and wide support for different platforms. (Note that browser performance varies between devices so make sure not to add too much effects and glitter)
For native apps, there's no that many frameworks but one interesting is MoSync (http://www.mosync.com/)
There can be multiple approaches to create a Cross Smatphone plateform apllication.
If you want to code just once and want to to run on multiple enviroments without any change you must go for some javascript/HTML5 bassed solutions. One that I work with is NGCore. It is a development framework that allows games to be authored in JavaScript but with native application performance by leveraging ngmoco's ngCore libraries.
Other approach that will best suit your needs is to go for a Environment like MonoTouch. Its C# based and AFAIK you can use most of the .net API in MonoDevelope. It lets you reuse most of your code on another environment.
I have an application that is written in VB.NET, using the System.Windows.Forms.Form as the front-end GUI.
It runs perfectly on my Windows machine however recently there is a business requirement to convert this application to run as a web application so that people could view them in their blackberries when they go to the URL.
Is there any quick way to perform such a conversion or I will have to translate the code line-by-line for such cases?
Any help is appreciated!
Thanks!
Is there any quick way to perform such a conversion
No, not that meets your requirements. You can build custom winforms controls that can be hosted in internet explorer, but that won't help users accessing your app from a blackberry.
will I have to translate the code line-by-line for such cases?
No, it's much worse than that. Many of the things you do in a Winforms app just won't translate to the web well. You'll have to re-write and re-think a lot of your existing code. Essentially, you're not only re-building the app from from scratch, but you're doing it for a platform with which you have no prior experience. In other words, it might even take longer than building the original.
I know it's not what you were hoping to hear, but thems the breaks.