Invoke virtual method on null reference, but why is it null?
49
What is a NullPointerException, and how do I fix it?
131923
Optional parameters on delegates doesn't work properly
64332
avoiding null reference exceptions
138823
Why cast null to Object?
94683
Implement a pure virtual method in Objective-C
5082
How do I use reflection to call a generic method?
63521
How to pass a nullable type to a P/invoked function
29684
How to check if an object is nullable?
86435
Do I need to explicitly call the base virtual destructor?
77711
How to use Reflection to Invoke an Overloaded Method in .NET
142557
Calling pure virtual function in constructor gives an error
134689
Setting an object to null vs Dispose()
92446
C#: How to pass null to a function expecting a ref?
27460
Virtual functions
31537
Checking for null before event dispatching... thread safe?
127452
Why is typeof null "object"?
60221
Can I call a base class's virtual function if I'm overriding it?