From fbdaf8487751e60703d17b31c3f54ed5f89fd781 Mon Sep 17 00:00:00 2001
From: Jason Zhu <jasonzhuyq@outlook.com>
Date: Mon, 22 Feb 2021 23:05:38 +1100
Subject: [PATCH] Finished Deriving from System.Object

---
 csharp_fundamentals/8_oop.md | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/csharp_fundamentals/8_oop.md b/csharp_fundamentals/8_oop.md
index b472510..acb1d84 100644
--- a/csharp_fundamentals/8_oop.md
+++ b/csharp_fundamentals/8_oop.md
@@ -54,4 +54,15 @@ Syntax:
             Name = name;
         }
     }
-```
\ No newline at end of file
+```
+
+## Deriving fromm System.Object
+
+In .NET, everything is derived from `System.Object` class (even when you don't specify it when defining classes). We can view it by pressing F12.
+
+This class has methods:
+* `ToString`
+* `GetHashCode()`
+* ...
+
+All these methods will be inherited in its derived class (i.e. all classes)
\ No newline at end of file