[Solved] Examine the following custom exception class:public class CustomError : Exception { public CustomError(string message) { Console.WriteLine(message); }}What is the main issue with this implementation? | C Sharp (C#)

C Sharp (C#) - Exception Handling

Examine the following custom exception class:

public class CustomError : Exception {
  public CustomError(string message) {
    Console.WriteLine(message);
  }
}

What is the main issue with this implementation?

AIt lacks a parameterless constructor

BIt incorrectly uses Console.WriteLine inside the constructor

CIt should inherit from System.Exception instead of Exception

DIt does not pass the message to the base Exception class constructor

Step-by-Step Solution

Solution:

Step 1: Understand Exception constructor requirements
Custom exceptions should pass the message to the base Exception class constructor to properly initialize the exception message.
Step 2: Analyze the code
The constructor writes the message to the console but does not call base(message), so the Exception's Message property remains empty.
Step 3: Evaluate other options
It incorrectly uses Console.WriteLine inside the constructor is not an error but a bad practice. It should inherit from System.Exception instead of Exception is incorrect because Exception is the correct base class. It lacks a parameterless constructor is optional but not an error.
Final Answer:
It does not pass the message to the base Exception class constructor -> Option D
Quick Check:
Always call base(message) in custom exception constructors [OK]

Quick Trick: Call base(message) to set exception message [OK]

Common Mistakes:

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