I have a C# Winforms application I'm looking to deploy on an XP Laptop with the .NET Framework 1.1 installed.
The solution contains three projects, all with a target framework of .NET Framework 2.0
The setup project has the preqrequisite of .NET Framework 2.0 checked. No other prerequisites are checked.
Why, when I try to run the setup on the laptop, does it require me to install the .NET Framework 3.5 SP1?
(FYI I am developing in VS2008 on a machine with .NET Framework 3.5 SP1)
Thanks in advance,
Jim
I don't know if it applies to you, but see the answer from PhilWilson here: http://social.msdn.microsoft.com/Forums/en-US/netfxsetup/thread/ca822298-8371-4e04-8763-cccd4615ab84
Do any of your projects depend on anything else other than the .NET framework? If you have a reference to something that does, then that will require its prerequisites are installed too.
I'd also triple check that you've not got one of your projects still pointing at 3.5.
Related
After years and years of developing C#.NET I still run into new questions.
We have a legacy project and for some dark reason a colleague of mine no longer was able to open solutions in VS2017. Long story short: the solution was finally found in uninstalling all .NET frameworks and installing 4.7.1 again.
The question that struck me then is as follows. After installing ONLY the latest .NET framework, I always thought that this install would also contain all supported target frameworks up and until this version. This is not the case, as I can only choose from the following target frameworks:
...
...
4.5
4.5.1
4.5.2
4.6
4.6.2
4.7.1
This is what I have installed (targeting packs/.NET framework SDKs).
Why is 4.6.1 missing?
Why is 4.7 missing? Or the other way around looking at what I have installed. Why is there a bunch of targeting packs available while I did not install them?
Which framework versions you can target depends on which targeting packs/SDKs you have installed on the machine, not which .NET Framework versions are installed.
You can download additional packs from .NET SDKs for Visual Studio.
Frequently when a new .NET framework version becomes available, different releases are available, some of which just include the runtime and some of which include the targeting pack. So it's possible that you've been installing the latter forms generally in the past and so not aware that they're also bundled separately.
Our development team has many .net framework 4.6 projects (VS 2015).
We want to start a new .net core project to eventually deploy on linux.
We have installed VS 2017 and the .net core 2.0 preview.
But how can we reuse the existing library projects in this new one ?
We research but it is not clear for us :
- we need to change the target of the old projects from ".Net Framework 4.6" to ".NetStandard 1.x" ? (and solve the incompatibility)
- or we can use them like that ? (but how?)
Thanks
Microsoft publishes official guidelines for the porting process: https://learn.microsoft.com/en-us/dotnet/articles/core/porting/
To summarize:
Deal with your dependencies (by migrating them), recursively
Retarget your projects. Applications move to .NET core, libraries move to .NET Standard, where possible.
Use some helpful tooling to verify your ports
Test
So, to share things between .NET Framework and .NET Core, your libraries should target .NET Standard, as much as possible. Otherwise, you could possibly share the code and have to do multiple builds - build once targetting .NET Framework and again targetting .NET Core.
You can use/reference your old projects only if you target Full Framework in your new projects (which is not the case if you are going to run them on Linux).
If you started with preview you should convert you old projects to .Net Core projects and either target .NET Core 2.0 Preview or NetStandard 2.0 Preview. If you are not going to reference/use your old projects outside your application it might be better to target .NET Core 2.0 Preview because it might provide more API than NetStandard 2.0 Preview.
I am planning to install VS 2012 or 2013 and I was wondering if .NET 4.5 will get installed with it? I think it will but then what will happen to all my apps with target platform 4.0?
So my question is when I install VS, will my old apps which have target platform 4 contain elements of .NET 4.5?
Let say as example type string in 4.5 it has some improvements or something which 4.0 doesnt have. Will I get them even though I build against 4.0 according to target platform?
I would like to avoid some strange behavior in already existing projects just because I am running now visual studio 2013.
Any experience on this one guys?
Sorry in case of a duplicate question
In Visual Studio 2013 you can still build against .NET 4.0. The (highest) framework version installed on your development machine has no influence on the end result of your build process.
When installing .NET 4.5 in place of .NET 4 will change something on your PC: It gives you the ability to compile against the 4.5 version of the framework. As long as your compile your code against the NET 4.0 version, it has no need of .NET 4.5 to be installed.
If you target .NET 4.0, your code will not be able to access types which are specific to .NET 4.5 or .NET 4.5.1. However, your code will be running against .NET 4.5. That is only a problem if you do not test against .NET 4.0. In that case, you could find that bugs are fixed in .NET 4.5, but your users may still be using .NET 4.0, which may still have the bugs.
If the user's PC has only Framework 2.0 installed, will Framework 4.0 work?
I installed windows 7 on my other laptop and tried to run my application built on C#, it didn't work. I figured out that my application is targeted for Framework 4.
When I ran this app on that laptop, it didn't work.. I wonder why, i thought that framework is already installed with windows. It's either it has an old Framework version ( like 2.0 ) OR it doesn't have any Framework installed.
Should I change my target to Framework 2.0 in order to make it work?
If the user's PC has only Framework 2.0 installed, will Framework 4.0 work?
If the user has only .NET 2.0 installed and you attempt to run an application compiled against .NET 4.0 it won't work.
On the other hand if the user has .NET 4.0 installed and you attempt to run an application compiled against .NET 2.0 this will work.
I am not aware of any forward compatible frameworks. Only backwards compatible. Makes sense?
Should I change my target to Framework 2.0 in order to make it work?
Yes, if you want to run your application on a computer that has only .NET 2.0 installed.
if i have an application that requires .net 3.0, what is the proper way to make an install file out of it, that will install the application and then install (activate) the .net 3.0? i tried publishing my project through visual studio 2008 (c#) which created the installer and the .net activator, but it didn't work properly on computers other than my own, when the .net 3.0 was not present.
i though i could bundle http://www.microsoft.com/downloads/details.aspx?FamilyID=10CC340B-F857-4A14-83F5-25634C3BF043&displaylang=en with the application, which would download and install .net 3.0 if needed. this could work ok on non-vista systems, but on vista, the redist package reports an error: you must use turn windows features on or off in the control panel to install or configure microsoft .net framework 3.0
The key is to install the .net framework if it is not there - regardless of the OS. Also, just go ahead and install the .Net 3.5 framework if you are going to install one of them.
Anyway, if you are using the built in installer that comes with Visual Studio, this is a real pain in the butt. You would be better off, and saner if you went with a different installer package. Install Shield, Wise, InstallAware will all do it for you. I believe you can also find better guidance on how to do this with Wix and NullSoft Installer.
http://www.improve.dk/blog/2007/06/10/creating-a-dotnet-bootstrapped-installer-using-nsis
How can I detect .NET 3.5 in WiX?
Windows Vista has already .NET Framework 3.0 installed.
Now if you wanted for example to have .NET Framework 3.5 installed you could create a Setup Project and then right click and go to View->Launch Conditions. There will be a .NET Framework launch condition where you can specify the required version of the framework and an URL to download from.
Here's a post about Launch Conditions in a Setup Project.