The System.NullReferenceException – Object reference not set to an instance of an object is a runtime exception in C# that occurs when you try to access a member (e.g., a….
The error message CS4001 – The async method lacks an ‘await’ operator in C# is similar to CS1998 and indicates that an async method does not contain any await operators…..
The error message CS1998 – This async method lacks ‘await’ operators and will run synchronously in C# indicates that an async method does not contain any await operators. This typically….
The error message CS1591 – Missing XML comment for publicly visible type or member ‘xyz’ in C# indicates that a publicly visible type or member (e.g., class, method, property) does….
The error message CS0501 – ‘xyz’ must declare a body because it is not marked abstract or extern in C# indicates that a method, property, or indexer does not have….
The error message CS0161 – Not all code paths return a value in C# indicates that a method or property with a non-void return type does not return a value….
The error message CS0656 – Missing compiler required member ‘System.Runtime.CompilerServices.ExtensionAttribute’ in C# indicates that the compiler is unable to find the ExtensionAttribute class, which is required for extension methods. This….
The error message CS0021 – Cannot apply indexing with [] to an expression of type ‘xyz’ in C# indicates that you are trying to use the indexer operator [] on….
The error message CS0104 – ‘xyz’ is an ambiguous reference between ‘namespace1.xyz’ and ‘namespace2.xyz’ in C# indicates that the compiler cannot resolve a reference to ‘xyz’ because it exists in….
The error message CS0118 – ‘xyz’ is a namespace but is used like a type in C# indicates that you are trying to use a namespace as if it were….
