You want to protect a class field so it can only be set to positive values. Which encapsulation approach is best in C#?

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C Sharp (C#) - Properties and Encapsulation

AMake the field protected and allow subclasses to set any value

BMake the field public and check values outside the class

CMake the field private and provide a public getter only

DMake the field private and provide a public setter method that validates the value

Step-by-Step Solution

Solution:

Step 1: Understand the need for validation
To ensure only positive values are set, validation must happen inside the class.
Step 2: Choose encapsulation method
Making the field private and using a public setter method with validation allows control over allowed values.
Final Answer:
Make the field private and provide a public setter method that validates the value -> Option D
Quick Check:
Private field + validated setter = safe data [OK]

Quick Trick: Use private field with validated public setter method [OK]

Common Mistakes:

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