C# - Part 66 - Optional Attribute in C# - Tutorial For Beginners

OptionalAttribute in C#
Understanding Optional Parameters
In C#, you can create optional parameters for methods. This means that a caller can omit the parameter when invoking the method, and the method will use a default value. There are several ways to achieve this, and OptionalAttribute is one of them.
What is OptionalAttribute?
Namespace: System.Runtime.InteropServices
Purpose: Primarily used for interoperability with COM components.
Functionality: Indicates that a parameter is optional when calling a method through COM interop.
Key Points
Limited Use: While it can technically be used in C# code, it's primarily intended for COM interop scenarios.
No Default Value: Unlike other methods of creating optional parameters in C#, OptionalAttribute doesn't provide a default value.
Alternative Approaches: For most C# code, using default parameter values or method overloading is preferred for optional parameters.