Chain Of Responsibility Pattern

Behavioral Design Pattern in C#

General Diagram

The code sample using this pattern

Here the code sample using this pattern, that you can find in Program.cs:

// Setup Chain of Responsibility
Handler redHandler = new RedHandler();
Handler greenHandler = new GreenHandler();
Handler blueHandler = new BlueHandler();

redHandler.SetNextHandler(greenHandler);
greenHandler.SetNextHandler(blueHandler);


// Requests

Request request = null;

request = new Request("001", "Red");
redHandler.ProcessRequest(request);

request = new Request("002", "Green");
redHandler.ProcessRequest(request);

request = new Request("003", "Blue");
redHandler.ProcessRequest(request);

request = new Request("999", "White");
redHandler.ProcessRequest(request);

And the results:

RedHandler approved request 001 as Red
GreenHandler approved request 002 as Green
BlueHandler approved request 003 as Blue
BlueHandler denied 999 as White

Post about this pattern

The post (in Spanish) about the comments and explanation of this pattern with the code sample of this repository, (can be found here)[https://geeks.ms/jorge/2020/08/18/chain-of-responsibility-pattern/].