Abstract member cannot be marked as sealed

• Jun 07, 2019

CodeRush Classic shows the Abstract member cannot be marked as sealed code issue if a member declaration contains both abstract and sealed keywords.

Fix

Remove the sealed keyword from the member declaration statement.

Purpose

Highlights the abstract member declarations, which would cause the ‘Member name’ cannot be both abstract and sealed compilation error.

Example

C#

public abstract class MyShape
{
    public sealed abstract double │GetArea();
}

Fix:

C#

public abstract class MyShape
{
    public abstract double GetArea();
}