Accessing Images from a .resource File in .NET 9.0

[ElavazhaganSF4422]

.NET version

.NET 9.0

Did it work in .NET Framework?

Yes

Did it work in any of the earlier releases of .NET Core or .NET 5+?

Yes, in the .NET 8.0 version, we were able to access the image from the .resource file.

Issue description

I added an image file as a resource in my project and attempted to access the image using the ResourceManager. However, when running the application in .NET 9.0 (NET90), I encountered the following error:

System.PlatformNotSupportedException: 'BinaryFormatter serialization and deserialization have been removed. See https://aka.ms/binaryformatter for more information.'

Interestingly, this approach works successfully when using .NET 8.0 (NET80). Below are the screenshots showing the issue in NET90 and the successful result in NET80:

NET90 Error Screenshot:

NET80 Success Screenshot:

Request: I need an alternate solution for accessing the .resources file in .NET 9.0, as the BinaryFormatter is no longer supported in this version. How can I successfully load and access resources, such as images, in .NET 9.0?

Steps to reproduce

1. Run the Sample
2. click the button

New folder (2).zip

Observed behavior

Excepted behavior

[SathiyathanamSathish]

@dotnet/dotnet-winforms - Does we have any alternate solution for this?

[JeremyKuhne]

@SathiyathanamSathish can you please remove the tag for "everyone" in your comment above? That isn't actually tagging anyone involved with WinForms.

If you add your image resources via the "Resources File" template (which creates a .resx file where you can add the images), the embedded resource will be accessible without needing to take in the compatibility package. If you want to continue to use a pre-generated embedded resource file you'll need to use the compat package.

[Zheng-Li01]

@SathiyathanamSathish, the issue can be resolved as below screenshot, please have a try.