C# Compiler Error – CS0312 the type ‘{3}’ cannot be used as type pa

In this blog post, you’ll learn more about the C# Compiler Error – CS0312 and the related message description

C# Compiler Error Code

CS0312

C# Compiler Description for the Code :CS0312

The type ‘{3}’ cannot be used as type parameter ‘{2}’ in the generic type or method ‘{0}’. The nullable type ‘{3}’ does not satisfy the constraint of ‘{1}’.