

It's activated in toolbox and I still can't use it



It's activated in toolbox and I still can't use it

.NET 5 isn't .NET Framework, I suspect you need to install a NuGet package, maybe this one? https://www.nuget.org/packages/System.windows.forms.datavisualization
May I know whether your issue have been solved or not? if not, please share it here, we can work together to figure it out.
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