System.Windows.Forms Version=8

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System.Windows.Forms Version=8

Simon 466

I keep getting errors that the system is looking for Version 8 references. All I find are System.Windows.Forms.dll - version 4. How do I resolve this error? Should I change all the references to Version 4? In this folder - C:\Program Files\dotnet\sdk\8.0.201
I see only references to versions 3.1, 5.0, 6.0, 8.0 From which folder can I find all the necessary references to version 4, that it should not generate an errorr?

Anonymous

2024-02-29T07:00:12.85+00:00

Hi @Simon , Welcome to Microsoft Q&A, From your description, it looks like you're using the .NET 8.0 version of the SDK, and your project depends on System.Windows.Forms.dll, but you found a reference to only version 4, not version 8, which you need. This may cause version mismatch errors. First, confirm whether your project actually requires System.Windows.Forms.dll version 8. As Bruce said, you can show your project files.

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Anonymous

2024-02-29T07:00:12.85+00:00

Hi @Simon , Welcome to Microsoft Q&A, From your description, it looks like you're using the .NET 8.0 version of the SDK, and your project depends on System.Windows.Forms.dll, but you found a reference to only version 4, not version 8, which you need. This may cause version mismatch errors. First, confirm whether your project actually requires System.Windows.Forms.dll version 8. As Bruce said, you can show your project files.

Answer 1

check that you created a net 8 windows form project. check your project file, it should have:

 <PropertyGroup>
   <OutputType>WinExe</OutputType>
   <TargetFramework>net8.0-windows</TargetFramework>
   <Nullable>enable</Nullable>
   <UseWindowsForms>true</UseWindowsForms>
   <ImplicitUsings>enable</ImplicitUsings>
 </PropertyGroup>

the target framework and UseWindowsForms are the key.

you should also not use any nuget packages that are depend on 4.* framework dlls like System.Windows.Forms.dll (version 4). this is probably your real issue.

if you need to use a component that uses System.Windows.Forms.dll, then you will need to downgrade to .net 4.8 project.

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