Tag: C# Errors

C# Compiler Error – CS8627 a nullable type parameter must be known

In this blog post, you’ll learn more about the C# Compiler Error – CS8627 and the related message description C# Compiler Error Code CS8627 C# Compiler Description for the Code :CS8627 A nullable type parameter must be known to be a value type or non-nullable reference type unless language version ‘{0}’ or greater is used. Consider changing the language version or adding a ‘class’, ‘struct’,…

C# Compiler Error – CS8650 it is not legal to use nullable referenc

In this blog post, you’ll learn more about the C# Compiler Error – CS8650 and the related message description C# Compiler Error Code CS8650 C# Compiler Description for the Code :CS8650 It is not legal to use nullable reference type ‘{0}?’ in an is-type expression; use the underlying type ‘{0}’ instead.