All Questions
Tagged with .net-core visual-studio
1,230
questions
2893
votes
13
answers
426k
views
What are the correct version numbers for C#?
What are the correct version numbers for C#? What came out when? Why can't I find any answers about C# 3.5?
This question is primarily to aid those who are searching for an answer using an incorrect ...
340
votes
8
answers
192k
views
Equivalent to AssemblyInfo in dotnet core/csproj
Since dotnet core moved back to the .csproj format, there is a new autogenerated MyProject.AssemblyInfo.cs which contains, among others:
[assembly: AssemblyCompany("MyProject")]
[assembly: ...
- 18k
271
votes
15
answers
228k
views
Non-nullable property must contain a non-null value when exiting constructor. Consider declaring the property as nullable
I have a simple class like this.
public class Greeting
{
public string From { get; set; }
public string To { get; set; }
public string Message { get; set; }
}
Strangely I get the ...
- 23.2k
156
votes
2
answers
8k
views
If (false == true) executes block when throwing exception is inside
I have a rather strange problem that is occurring.
This is my code:
private async Task BreakExpectedLogic()
{
bool test = false;
if (test == true)
{
Console.WriteLine("Hello!");
...
- 6,699
148
votes
21
answers
104k
views
Auto Versioning in Visual Studio 2017 (.NET Core)
I have spent the better part of a few hours trying to find a way to auto-increment versions in a .NETCoreApp 1.1 (Visual Studio 2017).
I know the the AssemblyInfo.cs is being created dynamically in ...
- 5,086
138
votes
5
answers
231k
views
Where is NuGet.Config file located in Visual Studio project?
I am wondering where is NuGet.Config file located in Visual Studio 2017 project? I tried to create my own NuGet.Config file in the root of the project, but I didn't find any new repositories (NuGet ...
- 15.7k
112
votes
32
answers
88k
views
Project file is incomplete. Expected imports are missing
After format my computer I reinstalled Vs 2017 V 15.6.3
and install ASP.Net Core SDK from Microsoft 2.1.4
But when I create new asp core application VS failed with error
"Project file is ...
- 1,331
102
votes
5
answers
55k
views
error CS8773: "Feature 'global using directive' is not available in C# 9.0" after downgrade from net6.0 to net5.0
I have a project that was initially created for .NET 6 but then I needed to downgrade it to .NET 5.
I changed Target framework in Project Properties and tried to compile. As a result I received a ...
- 4,771
100
votes
4
answers
54k
views
AssemblyVersion using * fails with error "wildcards, which are not compatible with determinism?"
I can't use * in assembly version; when I do I get the following compilation error:
The specified version string contains wildcards, which are not
compatible with determinism. Either remove wildcards ...
- 1,059
96
votes
4
answers
58k
views
Package version is always 1.0.0 with dotnet pack
TLDR: Where is dotnet pack pulling the version information when it creates the nuget package for an assembly?
I have a library, that I had transitioned from a .NET 4.6.1 project to a .NET Core ...
- 1,808
75
votes
32
answers
105k
views
Unable to start process dotnet.exe
I am attempting to setup a new work space and transfer all of my projects from my old computer to the new one. However, I am getting this error when I try to run IIS Express:
Unable to start ...
- 759
68
votes
3
answers
15k
views
No UseDatabaseErrorPage() extension method in Net Core 3.0
I have created Net Core 3.0 app and following code that worked in 2.2 now is not.
app.UseDatabaseErrorPage();
Looks like in 3.0 class DatabaseErrorPageExtensions does not exist within Microsoft....
- 1,130
64
votes
16
answers
141k
views
Failed to bind to address (already in use) error with Visual Studio Mac API
I'm attempting to create a Web API via .Net Core. I'm just using the boilerplate ValuesController as a Hello World. When I run the project, I get the following error:
System.IO.IOException: "Failed ...
- 1,931
64
votes
3
answers
44k
views
Should GetEnvironmentVariable work in xUnit tests?
If I set environment variables for a .Net Core web project in Visual Studio 2017 using the project properties page, I can read the value of the variable using Environment.GetEnvironmentVariable; ...
- 2,240
56
votes
8
answers
98k
views
The specified framework 'Microsoft.NETCore.App', version '2.2.0' was not found
I am using Visual Studio 2019 Version 16.3.7. I assume it is the latest update.
When I try to compile a basic .NET Core 2.2 console application:
...I get the following error:
It was not possible to ...
- 8,542
54
votes
2
answers
44k
views
What's the difference between <TargetFramework> and <RuntimeFrameworkVersion>?
I have the following code in a csproj file:
<TargetFramework>netcoreapp1.0</TargetFramework>
In the NuGet package manager, it says that I have Microsoft.NETCore.App version 1.0.5
Now let'...
- 3,811
46
votes
1
answer
34k
views
.Net Framework and .Net Core in same solution
I have an application targeting .NET Framework, and now I need to develop a library in .NET Core.
I plan to put both projects in the same solution and add the .NET Core library as a reference in the ....
- 461
44
votes
1
answer
16k
views
Setting custom <OutputPath> in .NET Core (stop adding framework target)? [duplicate]
In traditional .NET applications, it was possible to set a custom <OutputPath> of an assembly in the .csproj file (or via the project properties dialog). A path of e.g. bin\$(Configuration)\$(...
- 959
44
votes
20
answers
28k
views
Resource file "**/*.resx" cannot be found. (MSB3552) on VS for Mac
We can't build solution on vs for Mac version but the same solution can build on vs for windows (vs 2017) and it's worked.
How to fix on this problem ? and can support on both (vs on windows & vs ...
- 697
43
votes
4
answers
14k
views
How to disable Browser Link in ASP.NET Core (.NET 6, VS 2022)
I have disabled Browser Link inside Visual Studio 2022, and I have also disabled all the Hot Reload functionality.
Even the Browser Link Dashboard indicates it should be disabled:
I also do not use ...
- 9,854
41
votes
3
answers
46k
views
Change NuGet package folders used by Visual Studio
There is no more packages solution folder in any csproj or project.json-based .NET Core project.
NuGet CLI gets the list of used cache folders:
nuget locals all -list
Response:
http-cache: C:\...
- 24.1k
41
votes
6
answers
42k
views
Running dotnet command line within Visual Studio
The majority of .NET core tutorials online seem to use Visual Studio code, rather than Visual Studio (Full fat? Is there a proper term for the full version? I use Professional but there is also ...
- 2,223
40
votes
5
answers
26k
views
Including referenced project DLLs in nuget package [.Net Core RC3 *.csproj file]
I have a solution with two projects in it. First project is called Library1, which references project two called Referencelibrary. I am trying to embed the DLLs for ReferenceLibrary inside Library1's ...
- 2,927
40
votes
1
answer
11k
views
What is the new GlobalSection in a VS2017 15.3 solution file?
After upgrading to Visual Studio 2017 15.3.1 and ASP.NET Core 2.0, my solution file now has this at the end:
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {...a GUID...}
...
- 8,805
39
votes
4
answers
37k
views
How to force Visual Studio to re-create the SSL certificate for a .NET Core Web Application running Kestrel?
When a web project is created, Visual Studio automatically generates a SSL certificate and prompts you to install it. Everything works fine.
That certificate has now expired and I cannot figure out ...
- 2,490
38
votes
8
answers
49k
views
Should I install Visual Studio 2017 beside Visual Studio 2015 or should I first uninstall Visual Studio 2015 and then install Visual Studio 2017?
I am currently using Visual Studio 2015 for programming ASP.NET Core applications. I have the following questions regarding installing Visual Studio 2017:
What is considered to be best practice and/...
- 1,233
35
votes
9
answers
46k
views
VS 2017 15.3 Yellow Triangles on References
This morning I upgraded to VS 2017 15.3 and now am getting yellow triangles for most of my references. The project runs fine (build is good in CLI and VS and restore has been run multiple times) that ...
- 1,087
33
votes
9
answers
37k
views
C# Predefined type 'System.Object' is not defined or imported
In .NET core project, I changed the all projects name than after reloading all project that time many errors were showing approx 3225. And mainly all errors are related to system namespace like
...
- 1,333
32
votes
2
answers
23k
views
How do I actually create a .NET Core project in Visual Studio?
Maybe this is super obvious and I just can't find it but how can I create a .NET Core project in Visual Studio (2015 or, preferably, 2013)? I just want to run a console application on a Linux machine. ...
- 4,521
30
votes
1
answer
17k
views
Where is Create Unit Test in VS 2017?
I understand that this question has been asked before on SO and it appears that this feature was removed from VS at some point. But I am looking at a Microsoft tutorial right now and that says there ...
- 2,513
30
votes
5
answers
6k
views
Visual Studio update 3 installer is trying to install update 2 instead
.NET Core 1.0.0 was released yesterday and it needs VS update 3 to be installed.
So I downloaded the installer from here and tried installing but this weird issue is happening:
It's as if the ...
- 3,372
29
votes
1
answer
3k
views
How can I get Visual Studio to use Embedded Source code whilst debugging?
I have embedded the C# source code into a portable PDB file using the <EmbedAllSources> element in the csproj file, and I have embedded the pdb into the assembly using the <DebugType>...
- 4,539
28
votes
2
answers
16k
views
Building a .NET Core app via command line, so that it works on a machine without .NET Core installed
My end goal is to create a cross-platform (non-web) console application, so I'm exploring .NET Core right now.
In my previous .NET projects, I did all the development inside Visual Studio, but I also ...
- 36.1k
28
votes
3
answers
38k
views
Migrate .NET Framework 4.8 to .NET 5
Recently Microsoft has release .NET 5. If we want to upgrade .NET Framework 4.8 to .net 5 then how can we accomplish this task.
Please Note :
I had already upgrade Visual Studio 18.2 with all latest
...
- 501
27
votes
1
answer
22k
views
Include Nuget dependencies in my build output?
I am building a modular .NET core application that can load extensions at runtime using MEF. I have 2 projects, one is a library that I want to be able to load at runtime, then I have my main ...
- 4,544
27
votes
2
answers
17k
views
Visual Studio 2017 only has offline Nuget Packages for .NET Core 2.x. How to get online packages?
I want to get NuGet Packages from Nuget online, but Visual Studio is only giving me 'Microsoft Visual Studio Offline Packages' as an option.
I have tried adding another package source using the ...
- 16.6k
26
votes
1
answer
27k
views
How to change .NET Framework to .NET Standard/Core in Visual Studio?
I have a solution in C# in Visual Studios. It was first created in .NET Framework. I want to convert the project to .NET Standard/Core. If I go into project --> properties I see the attached screen,...
- 1,058
24
votes
9
answers
59k
views
The reference assemblies for framework .NETCore, Version=v5.0 were not found
I have a UWP project that was created using Visual Studio 2017. It builds fine on this machine (machine 1).
However, when I copy the project over to a machine (machine 2) where I only have the Visual ...
- 2,189
24
votes
10
answers
109k
views
HTTP Error 500: localhost is currently unable to handle this request
I'm running into an HTPP Error 500 and I'm not sure why. When I start my service, I pop open a Chrome browser and navigate to http://localhost:5000, and the error pops up. The Chrome Developer Tools ...
- 3,474
24
votes
2
answers
10k
views
Hide files in .csproj without excluding them from build
Is it possible to hide files/folders in .net core csproj without excluding them from build? I have a folder containing generated files which I would rather see they are not visible inside Solution ...
- 2,145
24
votes
6
answers
9k
views
Does .Net Core support User Secrets per environment?
Let's say I have connection string for Development environment specified in appsettings.Development.json and connection string for the Staging environment specified in appsettings.Staging.json
All I ...
- 1,666
24
votes
1
answer
16k
views
Opening Visual Studio 2017 projects in Visual Studio 2015
I've moved on to Visual Studio 2017 RC, but we still have people working on Visual Studio 2015. Currently when I create a project on 2017, it won't work on 2015. When the project is opened on VS2015 I ...
- 2,927
24
votes
4
answers
39k
views
How to properly stop running dotnet core web application?
In Visual Studio 2017 and 2019 on Windows, I run dotnet watch run in the Package Manager Console. It launched kestrel for a dotnet core app, automatically disabled text edit in the console, and ...
- 1,362
23
votes
3
answers
26k
views
Visual Studio indentation set to two spaces instead of four space tab
I have just opened an old project here at work. Someone appears to have changed the indentation. It's set to 2 spaces instead of four space tabbing.
What I have tried:
I tried doing a Ctrl + KD ...
23
votes
3
answers
10k
views
Calculate Code Metrics for .NET Core Projects?
I am playing arround with ASP.NET Core and .NET Core projects. For classic C# projects Visual Studio 2015 has got the feature to calculate code metrics. For .NET Core the support is missing in the ...
- 14.9k
22
votes
2
answers
91k
views
Form view designer is not working in Visual Studio 2019 with C# .NET Core 3.1 [duplicate]
When I am opening a Visual Studio project with VB.NET then the Form view designer is automatically opened, but when I open a new project with C# .NET Core 3.1 with Windows Forms then it is showing ...
- 239
22
votes
2
answers
9k
views
Missing visual studio 2019 blazor webassembly app template
I updated my vs 2019 16.3.10 to 16.4 and .net core 3.0 to .net core 3.1 but the blazor web assembly application template is missing.
- 231
22
votes
4
answers
40k
views
Use Visual Studio 2017 with .Net Core SDK 2.0
Can i open a core 2.0 project in Visual Studio 2017?
I've installed the latest dotnet-core (2.0.0-preview2-005840) and created a core 2.0 console-app.
mkdir dn2cli
cd dn2cli
dotnet new console
...
- 3,868
21
votes
6
answers
25k
views
.NET Core 2.0 missing from my Visual Studio
So I've installed the official .NET Core 2.0 SDK and when I'm in Visual Studio i get heaps of errors and the target framework is not listed :(
It's like .NET Core 2.0 isn't installed.
and here's ...
- 85.7k
21
votes
2
answers
43k
views
Unable to find package . No packages exist with this id in source. .NET core
I am trying to use a project as nuget package in other solution.
The project i want to use has 2 references to other projects in the solution he is at.
I am creating the .nupkg file using the cli ...
- 981