C# 7 and .NET: Designing Modern Cross-platform Applications

Inheritance

With the inheritence approach, we can use the Template method pattern. Using the Template method pattern, we can create a default behavior in the root class and then create child classes to override the default behavior and implement new functionality.

For example, here is a Logger class that logs information into the file system:

public class Logger 
{ 
  public virtual void LogMessage(string message) 
  { 
    //This method logs information into file system 
    LogToFileSystem(message); 
  } 
 
  private void LogtoFileSystem(string message) { 
    //Log to file system 
  } 
} 

We have one LogMessage method that logs the message into the file system by calling the LogToFileSystem method. This method works fine until we wanted to extend the functionality. Suppose, ...