C# in a Nutshell

Name

NullReferenceException

Synopsis

This exception is thrown when you try to dereference a null pointer (for example, accessing an instance field on an object reference that currently points to no instance).

public class NullReferenceException : SystemException {
// Public Constructors
   public method NullReferenceException();  
   public method NullReferenceException(string message);  
   public method NullReferenceException(string message, 
        Exception innerException);  
// Protected Constructors
   protected method NullReferenceException(
        System.Runtime.Serialization.SerializationInfo info, 
        System.Runtime.Serialization.StreamingContext context);  
}

Hierarchy

Object→Exception(System.Runtime.Serialization.ISerializable)→SystemException→NullReferenceException