null value into null object

Question

hello! how to convert a null value into null object in C# ?

Anupam Singh · Answer

hmm.. I reviewed your code : you specified below method in Hospital Class : //adding doctors to hospital private static void addDoctors(Hospital hospital) { hospital.listOfDoctors.Add(new Doctor("Ben Casey", 32, 3, "Ear, Nose, Throat")); hospital.listOfDoctors.Add(new Doctor("Hawkeye Pierce", 47, 4, "Heart")); hospital.listOfDoctors.Add(new Doctor("Doogie Howser", 22, 2, "Paediatrician", 150)); } But private ArrayList listOfDoctors; and private ArrayList listOfPatients; are global for Hospital class and its need not to use : hospital.listOfDoctors.Add(new Doctor("Ben Casey", 32, 3, "Ear, Nose, Throat")); you can simply use listOfDoctors.Add(new Doctor("Ben Casey", 32, 3, "Ear, Nose, Throat")); for this or another methods. and there is no need to specify these methods as static.

Abhishek Jaiswal · Answer

thank u for ur kind reply. can u please tell me how to do with other code parts like patient.cs and other.

Abhishek Jaiswal · Answer

hello sir! i waana apply these 2 things over my code- - refactoring - null value into null object can u please solve this. (code is attached)

Anupam Singh · Answer

Hi abhishek, My question to you :what is the need of doing this.It might be interesting if you share .. is this what you were looking for object o=(object)null; dynamic d=(object)null;