Tag: C# Compiler Errors

C# Error CS0031 – Constant value ‘value’ cannot be converted to a ‘type’

C# Error CS1617 – Invalid option ‘{0}’ for /langversion. Use ‘/langversion:?’ to list supported values.

C# Error CS1737 – Optional parameters must appear after all required parameters

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

C# Error CS0818 – Implicitly-typed variables must be initialized

C# Error CS1552 – Array type specifier, [], must appear before parameter name

C# Error CS0404 – ‘<' unexpected : attributes cannot be generic

C# Error CS1728 – Cannot bind delegate to ‘{0}’ because it is a member of ‘System.Nullable‘

C# Error CS0501 – ‘member function’ must declare a body because it is not marked abstract, extern, or partial

C# Error CS1648 – Members of readonly field ‘{0}’ cannot be modified (except in a constructor or a variable initializer)

C# Error CS1919 – Unsafe type ‘{0}’ cannot be used in object creation

C# Error CS8140 – ‘{0}’ is already listed in the interface list on type ‘{2}’ with different tuple element names, as ‘{1}’.

C# Error CS1750 – A value of type ‘{0}’ cannot be used as a default parameter because there are no standard conversions to type ‘{1}’

C# Error CS1726 – Friend assembly reference ‘{0}’ is invalid. Strong-name signed assemblies must specify a public key in their InternalsVisibleTo declarations.

C# Error CS0569 – ‘{0}’: cannot override ‘{1}’ because it is not supported by the language

C# Error CS1501 – No overload for method ‘{0}’ takes {1} arguments

C# Error CS0140 – The label ‘label’ is a duplicate

C# Error CS0714 – ‘{0}’: static classes cannot implement interfaces

C# Error CS0120 – An object reference is required for the nonstatic field, method, or property ‘member’

C# Error CS0743 – Expected contextual keyword ‘on’