Binding logic was not generated for a binder call. Unsupported input patterns include generic calls, passing boxed objects, and passing types that are not 'public' or 'internal'. (https://learn.microsoft.com/dotnet/fundamentals/syslib-diagnostics/syslib1104)

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Possible null reference return.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Possible null reference argument for parameter 's' in 'int int.Parse(string s)'.

Dereference of a possibly null reference.

Dereference of a possibly null reference.