[RESOLVED] 'SqlConnection' is ambiguous in the namespace 'System.Data.SqlClient'

[BrailleSchool]

Hi all,

I am creating class libraries in my project so that I can update code without having to update the whole app.

I created a class library project and added some code to it. I also added a reference to System.Data.SqlClient and also imported it into the class file.

I am getting an error and I have never seen it before. Been looking online and not able to find an answer yet. Any ideas? Screen shot attached.

I went here and it said:

Represents an open connection to a SQL Server database. This class cannot be inherited.

But I am not inheriting it.