Hey guys - I just wrote an app using c# and ready to deploy it. Never deployed a c# app before.
I deployed it and VC# outputted a .application file, application folder, and an installer. One of my users ran the installer (Windows 7) and was prompted to download/install the .net framework - which took upwards of 10 minutes. This is not acceptable for how simple my app is.
Moreover, I will need this app to be able to run on mac osx and linux if possible. Should I have wrote this in Java instead (poor planning on my part). What are my options?
C# is compiled to bytecode that runs on the CLR, the virtual machine that's at the core of the .NET framework. So yes, you need the .NET framework to run that.
Most current versions of Windows (XP, Vista, 7, etc.) come with some version of the .NET framework pre-installed, so your users don't have to download and install it. However, you might have used a version that's not already installed on the computers of (some of) your users.
For Linux and Mac OS X there is Mono, which is an open source implementation of .NET, but it does not contain everything that Microsoft's .NET contains, so your program might not work fully on Mono.
Using Java is not a real solution in the sense that your users would need to download and install the JRE (Java Runtime Environment) to run Java programs, very similar to the .NET framework. An advantage if you'd have used Java, is that Java is much more cross-platform compatible than .NET (Microsoft has no real interest in making .NET run on anything else than Windows).
.NET apps require the .NET framework. Java apps require the JRE. Your app is simple because .NET has done a lot of the work for you. A lot of companies write desktop apps in C++, but you will have to be mindful of cross-platform issues.
Yes, with any language that compiles to run on a managed runtime (.NET or Mono CLR, Java JVM) you will need to have that runtime installed. A C# application can compile to run on Windows on the .NET CLR, or on all the platforms you mention to run on the Mono runtime instead. Alternatively, a Java application would compile to run on the Java JRE, which is also compatible with all the platforms you mention.
So with either language there is potentially this extra installation overhead, and with either language you can achieve what you want.
You'll need to have .NET installed on your client's system in order to use your application.
As for running cross-platform - depending on how your Application is written, this can be simple or difficult.
You may want to look at Silverlight. This is directly supported on OS X and works on Linux via Moonlight.
Another alternative is to use Mono to run your .NET application on other platforms.
A C# app will need an implementation of the CLR (.NET) running on the local machine in order to run. A Java app will need an implementation of the JVM so it is really no different. On Windows, I would expect most people to have a .NET install.
Take a look at the Mono project as far as running it on Linux and Mac:
http://mono-project.com/Main_Page
One thing you can consider is using an older version of the .NET framework to ensure that the greatest number of people have it installed. I would use .NET 3.5 or even 2.0 if you do not need fancy new features. That would have been installed already on Windows 7 for example.
Since the Windows 7 user had to download the framework I assume you are currently targeting .NET 4 which means you must be using Visual Studio 2010 (or an express version). Here is a link that tells you how to target a different version of the framework:
http://msdn.microsoft.com/en-us/library/bb398202.aspx
One quick note about Mono, it is an excellent cross-platform option but it does not support the Windows Presentation Foundation (WPF) GUI framework at this point. You will either have to use Windows Forms or create different front-ends for different platforms.
If you want to create a Linux GUI (also available on Windows and Mac) you can try GTK#:
http://www.mono-project.com/GtkSharp
For a Mac native GUI you can check out MonoMac:
http://mjhutchinson.com/journal/2010/06/09/monomac_in_monodevelop
An excellent IDE for cross-platform .NET development is MonoDevelop (it will read your VC# project files):
http://monodevelop.com/
Like Java, .Net languages need a runtime installed. The full .Net framework is sometimes too big for small applications, so there is a smaller version of it call the compact framework with a smaller footprint that will install and download faster. You can read about it at http://msdn.microsoft.com/en-us/netframework/aa497273.aspx. As noted by other answers most current versions of Windows come with various versions of .Net framework, so this installation may not be needed for every user.
As far as your cross platform needs go Mono allows for running .Net applications on Linux, I am not sure about running them on OSX. My assumption is you can not. Unfortunately your cross platform requirements made .Net a bad choice, and you should have gone with Java.
Other people gave you complicated answers. Well here's my simple answer. .NET framework is needed to run .NET applications and so do Java need JVM (as MCain said). Starting with Windows Vista, Microsoft includes .NET Framework built inside Windows. And in addition, .NET have versions, from 1.0 to 4.0. With Vista and Windows 7, .NET 3.5 is installed by default. I think your app is targeted for .NET 4.0 which is why a Windows 7 user needed to install .NET framework. For me, if I have to write a simple program, I'll use .NET 2.0 (later version = larger libraries, etc) so that my users (if they are Vista or Windows 7) don't have to install .NET again to run my software. You can choose which version of .NET you will target from New Project Window in Visual Studio.
You can change the target framework in the properties tab. If you start a project in VS2008 the default is .net 3.5 and for VS2010 it is .net 4.0. If you don't need the advanced features you can change your target back to 2.0 which should be available on most computers by now (I would guess far over 90%). Be sure to remove dependencies which are not available in 2.0 (like System.Linq, System.DataSet.Extensions) and the accociated imports (But the compiler will tell you what to do).
Related
So I've made the program on windows 10 Visual studio Version 10 in c# as a console application. The program is just monitoring file changes with fsw. I'm now faced with the challenge of doing literally everything in my power to not have to install anything on the PC of which this program will have to run (as in company they don't normally like us installing anything on the old pc's). So I believe I need to compile the program in a lower version of .Net if possible?
Any help regarding the matter would be appreciated as most things I find is people wanting to move from 1.1 to higher versions or the odd reference to web applications or c++.
Also, (though it may be obvious) I'm not a coder, not even my job really and thus I am quite inexperienced so any answers dumbed down a lot would be incredibly useful.
Thanks in advance!
First of all, check if .Net framework is installed if you have not already, and in that case what version it has.
According to .Net version and dependencies windows XP does not include any .Net version. That page also include links on how to check version. The last .net release for windows XP is .Net 4.0. See .Net system requirements.
So there is no indication that you should use .Net 1.1. Either you would use whatever version is installed, or you install some version you want (i.e. the highest supported), or you do not install any version, and do something else.
Modern versions of Visual studio allow targeting of .Net framework from 2.0 and onwards. And I'm fairly sure you can run .Net 2.0 and later version on windows 10 if you install the framework. Using .Net 1.1 would probably require you to use windows XP as the development system, so I would avoid this if at all possible.
I would recommend using a virtual machine for testing, since it allows you to test on windows XP on your machine, and makes it easy to revert any failures. I would probably recommend migrating the entire PC to a virtual machine it at all possible, since this would reduce magnitude of hardware failures, and make backup and restoring much easier.
Originally it is set to use .Net3.5 for compatibility with win7. (Actually using WPF)
However when it comes to users in win8 which supports only the .Net4.0,
it is required for users to download and install .Net3.5,
which results in a terrible user experience.
Here comes my question:
How to make a software compatible with multiple .Net versions?
Actually I tried to use .Net 2.0 for the software and it goes well with both win7 and win8. However when it comes to .Net 3.5, the backward compatibility seems to be awful. However I really need some features available in 3.5, or WPF.
I don't mind if I have to build multiple binary releases, provided a auto-selection mechanism is available.
P.S. I've found a similar question at Make same app compatible for Net3.5 & 4.0#stackoverflow but got no help after reading it.
Edit
I'm using both winform and WPF. I'm using WPF for a better looking UI, however, as is nutoriously know, the webbrowser in WPF cannot render in a WPF app. So I use a winform webbrowser.
If you're making an normal WPF desktop application, just move your target framework to .Net 4 and be done with it. .Net 4 is fully supported on Windows 7 as well as Windows 8. If you don't want to have the users download an install .Net 4, include it in your setup distribution.
Make sure you don't use types that are not included in the lowest version you target!
.NET 2, 3 and 3.5 all share the same CLR, which should have the same effect on your code and expected outcome. 3.0 and 3.5 has different types as well, so watch out for that.
.NET 4.0 has a different CLR and your code might not act 100% in the same way as with the CLR 2.0.
But, why not ship with the redistributable 4.0 framework. It works on XP sp3, Vista sp1 , 7 and 8. Distributing .NET 4.0 redistributable with application
I'm developing a desktop application with C# (.net 2.0 framework), I will compile it with Mono develop in windows and will change the GUI to GTK#,
What is the minimum requirement of frameworks must present in different platforms to execute this application.
In windows it is .Net 2.0 ,
what it is in linux , ubuntu centos etc...,
what it is in mac..?
Also it will be helpful to know the default version of framework existing in each platform.
Please send some helpful url or references.
Mono usually supports the same runtime version for all plattforms; that means if you target and develop against the .NET35 profile on say OS X, your Application will also run on Linux (and of course windows) with mono on that profile. Same holds true for the .NET 2.0 and 4.0 profiles. The .NET 2.0 is the one most complete and stable, but to my experience the .NET35 and .NET4 profiles are very usable, too; lot of .NET35 libraries compiled for Windows will just run out of the box on Linux and OS X if you use mono.
A word of warning: I've worked with Gtk (not restricted to Gtk#) on OS X and must say, you should avoid it. The gtk-quartz branch is not nearly as stable as its linux counterpart. There are several known issues that will reproducibly crash your application (i.e. there are issues with Drag'n'Drop), and some pieces are missing completely. Only using the X11 backend with gtk on OSX will yield satisfying results, but provide a very poor integration into the OS and user experience.
You might want to consider developing different GUI frontends for each OS: Gtk# on Linux, WPF on Windows, Cocoa via MonoMac, or take a look at the in-development Xwt framework.
I have a simple application made using C#.
Now how do I make it , such that it runs on all systems.
If a PC does not have .NET framework installed - it shouldsiliently install it with only the bare minimum requirements that the program needs.
Installing .NET framework - too big in size compared to many program , which is just a few kilobytes. Also is shoulf be silent and only if required.
Basically the application should be light and capable to run in all Windows systems.
Not interested in getting to Linux users.
Should I use Mono Project.
Else is there a way to get the bare minim .NET framework selectively pre-installed.
Please advise.
Thanks
Have a look at mkbundle. It will create a standalone executable, with no other dependencies. In particular it does not need neither the Mono runtime nor .NET to be installed in order to execute.
The size might still be a problem (it will likely be several megabytes, even compressed), so there is another tool to strip out everything you don't need from the assemblies: the monolinker.
Note that the size will likely not reach the kilobyte range even after doing all this.
You can do this with a lot of work and the help of the Mono framework. See Embedding Mono for more information.
All that considered, it would be much easier to use a boostrapper to get a version of the .NET Client Framework installed. But you're going to lose the ability to install silently or be in the "kilobytes" footprint.
Unfortunately you cant run a .NET program on a machine that does not have the .NET framework installed and the installer of the program could be made to download the framework automatically but not in .NET .
To run .net applications you need the .net framework installed, that should be either the full version or the limited client profile edition.
The easiest way is to create a setup project from VS and require the .net version you want... the installer should be able to install the .net framework from the internet so you are not required to ship it with the app, which you can do by the way from the installer.
Mono won't be different since it still needs to be installed on the system. Mono however has full AOT support, but I don't have any idea whether that would help you or not... it is still a huge overkill anyway.
If you need your app to be small and run on ANY windows without any dependencies, you should do in c/c++ or vb6 whose runtime ships with most windows versions.
I want to start doing a cross platform project that will run on Linux and Windows.
I went to mono's website to check things out as I heard mono allows me to run c# on Linux, but when I arrived there http://mono-project.com/Main_Page I was a bit confused.
The download page allows me to download it just fine but in order to program mono on VS2010 I need to pay for mono-tools or are there any alternatives within VS2010 ?
In short what do I need to be able to use mono with VS2010 and what are the alternatives to programming mono without VS2010 ?
You can develop in Linux using MonoDevelop.
You can also develop on Windows using Visual Studio 2010 Express Edition, and target the Microsoft .NET Framework. You can then run your assemblies through the Mono Migration Analyzer (MoMA) to make sure they'll run successfully on Linux/Mono. Since Mono uses the same standard IL as the Microsoft framework, the application will run unchanged on Linux, provided you stick to supported portions of the framework.
You don't need to do anything special in your .NET development in order to use mono (aside from writing compatible code). Mono is simply a free implementation of the .NET framework, which will simply run applications written for .NET, regardless of underlying OS platform (i.e. Linux).
Basically, you just need to develop your .NET application as normal, and then you can run that application on mono if you so choose. Since Mono is it's own implementation, there may be some differences, and you can use the Mono compatibility tool to ensure that the .NET code you've written is compatible with Mono's implementation of the .NET framework.
You may also want to download a VMWare image of Mono or something similar if you'd like to spin up a Linux virtual machine for testing of how your application actually runs on a Mono-enabled machine once you've started development.