C# declare class member variable type of itself pointer

Question

I write linked list for study with C#

but, why this code occur error.

class testClass{
    testClass* pointerValue;
}

Error code:

Cannot take the address of, get the size of, or declare a pointer to a managed type ('testClass')

i dont know why this error occur. help me

Answer 1

Since testClass has been declared as class (not as struct ) it's a reference type and you have no need in any explicit unsafe pointer :

class testClass { 
  // reference to testClass instance or null
  testClass pointerValue; 
}