null value in assignment for out ab initio

IMAGES

1. Written assignment Ab Initio 2013

   

2. Level 3 assignment 1 : If: Value cannot be null, Value cannot be null

   

3. Level 3 assignment 1 : If: Value cannot be null, Value cannot be null

   

4. Getting "ArgumentNullException: Value cannot be null" error

   

5. Getting "ArgumentNullException: Value cannot be null" error

   

6. System.ArgumentNullException: Value cannot be null