Hafner.Extensions.Object.CheckNull

This micro package provides extension method System.Object.CheckNull() (restricted to reference types).

Description

Package "Hafner.Extensions.Object.CheckNull" contains an extension method for a System.Object that checks whether it is null (Nothing in Visual Basic) an in case it is, throws an ArgumentNullException with a speaking message (using the automatically filled in 2nd argument parameterName); otherwise, the object is returned.

Edge cases:

If the object is a System.ValueType it cannot be called (compile error).

If the parameter name is null, empty or white-space, an ArgumentNullException with a generic message is thrown ("The argument cannot be null!")

If the parameter name is recognized as an expression, an ArgumentNullException with an according message is thrown ("The expression '{paramName}' cannot be null!")

If the parameter name is recognized as a parameter name, an ArgumentNullException with an according message is thrown ("The argument for parameter '{paramName}' cannot be null!")

Supported Frameworks:

.NET framework versions 2.0, 3.0, 3.5, 4.0, 4.0.3, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

.NET core versions 1.0, 1.1, 2.0, 2.1, 2.2, 3.0, 3.1, 5.0, 6.0, 7.0, , ,