In Rider IDE, I am trying to create a new solution:
But I'm unable to change the .NET Framework as the dropdown is disabled. How can I change the version? I have installed .NET Framework 3.5, 4.5, 4.6.
This is one of the way to change the build framework in Rider. It allows you to switch the MSBuild version explicitly by selecting MSBuild.dll.
When you have multiple .NET framework, you can change it here.
This example is for .NET core project.
In my system I installed latest .NET core RC after which Rider started complaining in older projects (when there were working fine prior to installation)
I had following versions
I selected the older version of MSBuild.dll and my project were back to normal.
in Rider IDE in solution explorer - right mouse click on the project,
in properties (left pane) select Application (should be selected by default)
in the right - change Target framework - click on ellipses, check your new framework
Save
Actually for now Rider contains the only one Web App Template - for net45.
We are going to add another one - for net4.6.1 (or 4.6.2) in 2018.1.
You can track status here: https://youtrack.jetbrains.com/issue/RIDER-10888
The main issue here - we can not just change target framework version, but change all referenced package versions and some template files...
#FaizanRabbani You should have installed suitable .NET Developer Pack to change this option. You can download it from https://www.microsoft.com/net/download/windows
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Good day all,
I'm using Visual Studio Professional 2019 and when I start a new c# project (doesn't matter if it is console, WPF or Windows forms) I can only choose from the .Net frameworks: core 3.0, core 3.1 and 5.0 while on the machine are installed also other frameworks like 3.5, 4.5, 4.6, 4.8 etc.. .VS_Screen The strange fact is that if I look to older c# projects I can choose from all the frameworks installed on my pc. How can I use one of those framework on a new project
Also as You can see in the attached image in the solution explorer the "Reference" tab does not appear, how can I make it appear?
Agree with Flydog57's comment; take a look at this "New Project" window:
See after the project name on eg the Console app it has "(.NET Core)" and after the WPF one it has "(.NET Framework)"? That defines what you'll see in your targeting box.. Make sure you pick the one you want to later choose some relevant version from
After Visual Studio 2017 was released I wanted to try to create simple console project with new C# 7 features. I expected that I simply download new Visual Studio 2017, then create new console project and can use new C# 7 features. But I can't.
I can use some features, like Tuples if I install NuGet package System.ValueTuple.
But for other features, I don't know what I need to do. For example this NuGet issue.
Do I need to do all this dirty install now? Or I can enable c# 7 features in a more simple way?
For arbitrary task-like types you linked to in the 2nd part of your question you need to include the System.Threading.Tasks.Extensions package.
The reason you need these NuGet packages is because the new language features rely on new types added to the .NET framework. The new types that the C# language features depend on will not be "built in to the framework" until the next minor version released after 4.6.2 to not break SemVer1. So unless you are building a project using that next version of the framework you will need to use the NuGet packages to get the features to work.
This is no different than getting extension methods to work in a .NET 2.0 project. You can use extension methods but you need to use a NuGet package (or add the code yourself) to get the types it relies on to be added to your project.
1: So 4.7 or 5.0, whatever they decide to call it, if there is a 4.6.3 it will not be in that version because that is not a minor release version bump, that is a patch version bump and you can't make API changes in a patch version bump without violating Semantic Versioning.
Any project that targets .NET 4.7 can use C# 7 tuples without adding a Nuget package. You'll have to install it manually:
Upgrade to Windows 10 Creator's Update (10.0.15063), or install .NET Framework 4.7 on other versions of Windows: https://www.microsoft.com/en-us/download/details.aspx?id=55170
From the Start menu, run Visual Studio Installer and click Modify. Go to "Individual components" and check the following two components:
.NET Framework 4.7 SDK
.NET Framework 4.7 targeting pack
It doesn't work out-of-the-box on Windows 10 Creator's Update because Microsoft omitted the .NET 4.7 components from the ".NET desktop environment" workload. I filed a bug, but they closed it as Not a Bug:
https://developercommunity.visualstudio.com/content/problem/41930/vs-2017-does-not-install-net-47-sdk-and-targeting.html
Vs2017 update 3 can support c#7.1 but it's configured by default to support c#7.0.
You can modify the setting of your project and select c# 7.1
for more details how to configure vs2017.3 to support last version of c#7.1
I have a program that I developed in C# and it is currently running on the Microsoft .NET Framework v4.0. I have upgraded to Visual Studio 2012 and that also installed Microsoft .NET Framework v4.5. Before when I had .NET Framework v4.0 installed, this how my program looked:
Now that I upgraded to .NET Framework v4.5, this is how it looks:
Notice the TreeView is now on the right side instead of the left? The 2 controls are each in seperate columns in a table which is in tool strip container. This problem is occurring on the latest/stable version of .NET Framework v4.5 (v4.0.30319.17929 or v4.5.50709 to be exact) which was released on August 15. I would like to know what is causing this and if there's a way to prevent this from happening (besides uninstalling .NET Framework v4.5)? Also, if this program is compiled with v4.0, why is v4.5 causing this problem?
Have you tried compiling it and running it under v4.0? Just because 4.5 is installed it doesn't mean 4.0 has been uninstalled.
In your solution explorer, right click on the project name and click Properties. Then in the Application tab, set the Target framework back to .NET Framework 4.
Then compile and run. If it's a .NET framework thing then it should all be back to normal. If it's still docked to the right, then the code has changed somehow.
I have created a class library in .NET Framework 3.5. Now I want to change the .NET Framework Version to 4.0.
How can I do this?
In Visual Studio:
Right-click on your project
Select Properties
Select the Application tab
Change the Target Framework to the desired framework
If you are not seeing .NET Framework 4 as an option there, ensure you have it installed.
EDIT
I don't think this is what you're asking, but for completeness, one can also point an existing DLL to a later version of the .NET Framework without recompiling using Binding Redirects.
Right click on the project in the solution explorer and select Properties.
Make sure that the Application tab is selected.
In the Target framework dropdown select the desired framework, e.g. .NET Framework 4.
In Visual Studio 2010:
Right-click on your Project
Select Properties
Select the Compile tab
At the bottom, select Advanced Compile Options
Change the Target Framework to the desired framework
Unfortunately this cannot be done once dll has been created. For this you need to have source of your class library.
Select Properties from Right clicking on the project in the solution explorer.
In Application Tab change Target Framework to Desired one.
FYI - there's a "Target Framework Migrator" extension tool for Visual Studio (2013, 2015) that will do all projects in your solution in one go.
I'm working on a solution at the moment with a 100+ projects in it and it's not practicable to do each project one at a time IMO.
I would like to know how can i transform a .NET 4.0 VS 2010 C# project intro a 3.x .NET version? I just made an app for someone and i don't think he has the .NET 4.0 platform installed . Any ideas?
Change project target framework to 3.5 might work unless your using some 4.0 specific things.
Or make sure that the user has 4.0 installed if possible.
No, you cannot do it directly. You have three options:
create a new project file that targets the 3.x framework and add the files to it (make sure they are not using v4.0 features)
get your friend to install the v4.0 framework - it is roughly 50MB, not really that big
as Jon pointed out, just retarget your project to v3.x in your VS2010 IDE (in the solution explorer, right click on your project, select Properties, go to the Application tab, use the Target framework dropdown)
if you have completed a reasonable amount of code it may be simpler to just install the new version of the framework.
Change the target framework.
But if you want to use it in Visual Studio 2008 (the URL of your question suggests it), then:
Open the sln file with notepad, and change the following line:
Microsoft Visual Studio Solution File, Format Version 11.00
to:
Microsoft Visual Studio Solution File, Format Version 10.00
The easiest way is to create a new Visual Studio 2008 project with your requirements (.NET version, namespace, etc) and just copy all sources from your Visual Studio 2010 project to that project. The solution explorer has an option that shows all files in your project that are not included, and you can include these files in your project by right clicking on the files and selecting "Include in project." Then just compile and see what problems you get.
Use the "Properties" from the project and select the version of the framework in "Target Framework"; that is required.