TLS 1.2 Using Partner wsdl

I have been using the Partner wsdl to connect to SalesForce from my C# application for a few years. When I found out that SalesForce was turning off TLS 1.0, I did some reading and found out that updating my C# application to the .NET 4.6 Framework should get it to use TLS 1.1 or TLS 1.2, so problem solved? No.