CSharp

C# Error CS9050 – A ref field cannot refer to a ref struct.

C# Error CS9043 – Ref returning properties cannot be required.

C# Error CS8812 – Cannot convert &method group ‘{0}’ to non-function pointer type ‘{1}’.

C# Error CS8803 – Top-level statements must precede namespace and type declarations.

C# Error CS8515 – Parentheses are required around the switch governing expression.

C# Error CS8411 – Asynchronous foreach statement cannot operate on variables of type ‘{0}’ because ‘{0}’ does not contain a suitable public instance or extension definition for ‘{1}’

C# Error CS8410 – ‘{0}’: type used in an asynchronous using statement must be implicitly convertible to ‘System.IAsyncDisposable’ or implement a suitable ‘DisposeAsync’ method.

C# Error CS8403 – Method ‘{0}’ with an iterator block must be ‘async’ to return ‘{1}’

C# Error CS8401 – To use ‘@$’ instead of ‘$@’ for an interpolated verbatim string, please use language version ‘{0}’ or greater.

C# Error CS8400 – Feature ‘{0}’ is not available in C# 8.0. Please use language version {1} or greater.

C# Error CS8374 – Cannot ref-assign ‘{1}’ to ‘{0}’ because ‘{1}’ has a narrower escape scope than ‘{0}’.

C# Error CS8373 – The left-hand side of a ref assignment must be a ref variable.

C# Error CS8354 – Cannot return ‘this’ by reference.

C# Error CS8334 – Members of {0} ‘{1}’ cannot be returned by writable reference because it is a readonly variable

C# Error CS8333 – Cannot return {0} ‘{1}’ by writable reference because it is a readonly variable

C# Error CS8210 – A tuple may not contain a value of type ‘void’.

C# Error CS8178 – ‘await’ cannot be used in an expression containing a call to ‘{0}’ because it returns by reference

C# Error CS8177 – Async methods cannot have by-reference locals

C# Error CS8176 – Iterators cannot have by-reference locals

C# Error CS8175 – Cannot use ref local ‘{0}’ inside an anonymous method, lambda expression, or query expression