I'm pretty new to using C# and IIS and have been having a hard time getting my .net updated to 4.5. My application as of right now is just a single handler page with no solution hosted on a url controlled by Iis. The current version my IIS is running for that application pool is v4.0. I want to enable v4.5 but don't know where to start. I've been searching google for the past few hours now but none of it makes any sense to me.
.Net 4.5 still uses the 4.0 CLR and that's what you're picking. You won't see an option for 4.5 here. Just ensure whatever version you want is installed and compile your application against the newer .Net versions (which go up to 4.6.2 right now) and it will be just fine.
To learn more about the difference check out this blog post: https://blogs.msdn.microsoft.com/karinm/2008/11/10/whats-the-difference-between-clr-and-net-framework/
In the above screen shot click on the "application pool" and check the framework version you application is running on you can double click and change as appropriate.
Try following what's in the link. It should work :)
https://technet.microsoft.com/en-us/library/hh831475(v=ws.11).aspx
Note: you can use any .Net 45 application with v4.0 app pool
Related
I made a WPF and Console application for someone to use on their private server which I can't have access to. I used Visual Studio 2019's built-in "Publishing Wizard" to create Framework Dependant single-file apps. When the person opened the WPF app they were greeted with the standard warning:
They clicked yes and to my understanding, they installed .Net Core 3.1 which is what the applications target.
After they restarted the computer they got the exact same warning again. I wasn't sure what was going on so I repackaged the apps as self-contained since the installed version of .Net Core was the same as what my applications were targeting.
That seemed to work for a little bit. We ran into some unrelated issues that I had to fix in the code on my end and then I re-published the projects and sent them out.
They tried to use the WPF application and they got the install warning again.
Now no matter what combination of options I pick in the "Publish Wizard" they keep getting the warning.
I'm not sure what to do.
Here's a picture of my publish settings
In my case I had the same issue, and the problem was that I was not deploying the file "MY_PROGRAM_NAME.runtimeconfig.json". After copying this file, which is present in the build output, the application is launched without problems.
Turns out the issue was the fact that the applications were targeting win-x86 and the user only had access to 64-bit runtimes of .Net Core.
For some reason, I thought it would be able to handle a 32-bit version even if it was running 64-bit runtimes.
I guess live and learn.
I need to create a setup project for my application. I need to add launch condition to make sure user has .Net framework 3.5 or higher installed on his machine. Is there a way to do so?
I have tried creating the setup project in VS 2005, 2008 and 2010. I have also tried setting up the version in launch condition to be 3.5 and then opened the project file in notepad to set "Allow Later Versions" to true, without any success.
The setup still asks me to download .Net framework 3.5 when I have .Net framework 4.0 installed on my system.
Any help will be deeply appreciated.
Thanks,
Manjeet
I think you don't want to edit project file manually. "Allow Later versions" flag is for your application not for .net framework I think; isn't it?
If you do as per this tutorial it should work fine. I've never seen your problem before. I think you must have done something wrong, other wise it should work fine.
I was also experiencing the same problem. I found that
- Visual studio 2008 started to use ToolsVersion attribute to target the framework
- Framework 4.0 doesn't include framework 3.5
In my case, I installed 3.5 (along with 4.0) and the setup is working fine now.
Before starting my application (on Form Load) I want to check and ensure that the .NET framework (3.5 or higher) are installed on the machine - if not I want to prompt the user to download and install it (simple MessageBox with a INTERNET LINK to the Microsoft WebPage would be the best idea no?)
So, this actually entails two questions...
a) How do I DETERMINE IF .NET FrameWork 3.5 or higher are installed? (I don't trust or want to just look for the C:\Program Files\Microsoft.NET folder, seems error-prone no?)
Seeing as this is so very crucial there must be a nice way in C# to determine what version of .NET the user has running on his machine? I just have no clue how..
b) HOW do I paste an INTERNET LINK (hyperlink?) in a MessageBox? So that if the user does NOT have the .NET framework (1.1 or 2.0) installed I can have them simply click on the link to go download it?
Any help/hints would be greatly appreciated.
Thanks,
Din
a) You would have to bootstrap the program with a non .NET language (C++, VB6, etc) instead of Form_Load (other posters are correct - if the framework isn't installed, the .NET program won't run). An example is here:
http://www.codeproject.com/KB/mcpp/DotNetTester.aspx
b) You can't put a hyperlink in a MessageBox, so you would have to create your own popup dialog (a form). EDIT: That form / dialog would have to be in the bootstrap program.
You can not do this from your application. The application will fail to start.
One option you can do is make a ClickOnce installation that will verify that .NET is installed.
You can't do it in .NET because that would require .NET in the first place. However, you can create a native application that will perform the check than launch your .NET application. This post explains how to detect the .NET framework version.
Your code will not run without the framework so you will not be able to show the dialog box.
This check should be done on install.
So you want to make a .NET application that checks if .NET is installed on the machine?
If .NET Framework is not installed, how do you suppose that program manages to start up in the first place?
This question makes no sense.
The author wants to be able to detect if the .NET Framework 3.5 installed but offer a link to .NET Framework 1.1 and/or .NET Framework 2.0. Besides the fact you could easily just build a setup project that does exactly this just like Paint.net does ( although they do have a bootstrapper ) you would want to make sure the correct version of the .NET Framework is installed.
If the only thing that is installed is .NET Framework 1.1 and you didn't install the .NET Framework 4.0/3.5 for your user you would have a serious problem.
If your pushing .NET Framework 4.0 then your not helping your fellow programmers.
Basically, i am trying to determin if an application made for 1.x will run on a computer with just one copy of the .NET framework installed which is a higher version than what i am targetting, ie: it only has one copy of .NET 2.0, or 3.0, or 3.5 or 4.0 - has one copy of either of these and thats it, the hypothetical computer would not have 1.0 or 1.1 installed.
Trying to determine if 1.0 or 1.1 app would run here - the app is a simple app and im just trying to get the largest reach possible without the need to install the framework (and yes, i realize the frameworks are really small now days at about 40mb, but this is still not an option for me). thanks
an aside: btw, i have googled this to no avail, do we have or does anyone know adoption stats in terms of % of windows computers that run (say) 2.0, 1.x, 3.5 etc... or 2.0 and above, or 1.x and above? there is a reference on scott hanselmans blog but this seems really optimistic and incorrect to me as i did some user-string analysis of common users, and adoption of 2.0+ was barely above 50% while hanselmen said according to windows update data it was 95% (and this was in janruary 2010).
Edit\Update Could someone please confirm if Nayan's answer (and Daniels point under Darins answer) is correct? If so, this would change everything!
Yes it will run fine if you have a higher version of the framework installed. It is backwards compatible. But in the end of 2010 there's very little sense in still keeping applications targeting .NET 1.*. You could at least recompile them to target the .NET 2.0 if not .NET 3.5 or 4.0.
To answer your aside the wikipedia page shows what versions of windows have what version of .net pre-installed by default
To answer your main question. I know 100% that if you have 3.5 it will run 1.0-3.5 with just that installed. However I do not know if that is true for 4.
You should not have any problems running your application on .net 1+ frmaeworks.
. Net has been designed to always be backwards compatible. This means if we get to later versions it will still work.
It also means if the Microsoft team make a mistake it will still be there just a better way will be available
I don't think the question is very clear. I'll explain:
If you are asking if the application is already built on .NET 1.x and you are trying to run it in any other version, it will not work. It would need the same version.
But if you still have the code and are willing to recompile it on newer .NET versions, then you will have a newer .NET version compatible app!
What, I feel, missing in your question is that whether you are talking about built up apps or source codes.
I am writing an app to discover what features exist on a pc. The user would go to a web page, download the app and execute it (with all the appropriate warnings, this is not spyware). The app would use the standard MS api to determine such things as connection speed, installed memory, firewall health, etc. Writing the app is not a problem, I could use Scripting Host, C#, C++, etc. The question is, if I chose C# is there any guarantee that a certain flavor of windows would have .net installed? The target pc is XP SP2 or better and Vista.
Thanks for the help.
Vista does have .NET 3.0 installed. XP SP2 doesn't have any .NET framework installed by default.
You may want to read Scott Hanselman's blog post SmallestDotNet: On the Size of the .NET Framework, specifically the What's the "Client Profile?" section:
The Client Profile is an even smaller
install option for .NET 3.5 SP1 on XP.
It's small 277k bootstrapper. When
it's run on a Windows XP SP2 machines
with no .NET Framework installed, it
will download a 28 meg payload and
give you a client-specific subset of
.NET 3.5. If the Client Profile
bootstrapper is run on a machine with
any version of .NET on it, it'll act
the same as the 3.5 SP1 web installer
and detect what it needs to download,
then go get it. There's more details
in the Client Profile Deployment Guide.
Mehrdad has it right, SP2 has no .NET installation by default. It's worth noting, however, that you can provide a download for users who lack the runtimes, providing whatever version you are using bundled in. It's an option through the creation wizard of one of the setup packages.
Like the above have stated, .NET is not installed by default. However if you were using ASP .NET with C#, many things could be gotten just by viewing the website (computer name, domain, userid, etc).
Well if you are afraid of use .Net but the client does not have installed, you could try a product which takes all your .Net dependencies and creates an isolated installer that will run on every computer, with all the risks that this could raise to your users (no updates, no bug fixes and such).
Here is the link:
http://www.remotesoft.com/linker/index.html
Hope this helps.
I would suggest avoiding .NET if possible since most versions of Windows come without it and the installer will just add to the pain of using your program. Unless its a large application already... but from the sound of it you can get what you want with a few KB's of C++ executable (i.e. almost instant download).
Pre-Vista: there is a significant chance that .NET will not be installed. And event if it is it may be 1.0 or 1.1.
Vista includes .NET 3.0 in RTM, but it is an optional component in Server 2008.
I would also be considered about the size and start up time of .NET. Overall this sounds like something to be written with as few dependencies as possible.
EDIT: Corrected Vista included 3.0 not 3.5.