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Windows11
VS Community 2022
I am working on a solution which includes several projects, A vb winforms project, a vb class library, a couple of fortran dlls.
In the WinForms project I can import System.Data.SQLClient but in the class library project there is no System.Data.SQLClient namespace. In System.Data I see only two namespaces; common and SqlTypes.
Am I missing something, or is this "working as designed"?
Probably the Class Library is based on .NET. Maybe you should create a new "Class Library (.NET Framework)" project.
Or right-click the project in Solution Explorer, go to "Manage NuGet Packages...", find and add the System.Data.SqlClient package.
Just found out that when you add a project to a solution you can add
"Class Library" or
"Class Library(.NET Framework)
My WinForm project was the (.NET Framework) type of project targeting .Net Framework 5.7.2
The Class Library was not the (.NET Framework) type and it was targeting .NET Framework 8 (I think). Anyway, the 5.7.2 was not an option.
Removing that project and re-adding as the (.NET Framework) project type resolved the problem.