Difference between static, readonly, and constant in C# (part 2)

readonly:

🔸 Declared using the readonly keyword.

🔸 Only the class level fields can be readonly. The local variables of methods cannot be readonly.

🔸 Readonly fields can be initialized at declaration or in the constructor. Therefore, readonly variables are used for the run-time constants.

🔸 Readonly variable cannot be modified at run-time. It can only be initialized or changed in the constructor.

🔸 Readonly members can be accessed using object, but not ClassName.ReadOnlyVariableName.