[Solved] Find the error in this C# code:class Base { public virtual void Show() {} } class Derived : Base { public void Show() {} } | C Sharp (C#)

C Sharp (C#) - Inheritance

Find the error in this C# code:

class Base {
  public virtual void Show() {}
}
class Derived : Base {
  public void Show() {}
}

ABase.Show cannot be virtual

BDerived.Show must use override keyword

CDerived.Show must be static

DNo error, code is valid

Step-by-Step Solution

Solution:

Step 1: Understand virtual method overriding rules
A method overriding a virtual method must use the override keyword in C#.
Step 2: Check Derived class method declaration
Derived.Show lacks the override keyword, so it hides the base method instead of overriding it, which causes a warning or error.
Final Answer:
Derived.Show must use override keyword -> Option B
Quick Check:
Override virtual methods with 'override' keyword [OK]

Quick Trick: Use 'override' to override virtual methods [OK]

Common Mistakes:

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