Table of Contents

Class NullReferenceException

Namespace
System
Assembly
mscorlib.dll

The exception that is thrown when there is an attempt to dereference a null object reference.

public class NullReferenceException : SystemException
Inheritance
NullReferenceException
Inherited Members
Extension Methods

Constructors

NullReferenceException()

Initializes a new instance of the NullReferenceException class, setting the Message property of the new instance to a system-supplied message that describes the error, such as "The value 'null' was found where an instance of an object was required." This message takes into account the current system culture.

public NullReferenceException()

NullReferenceException(string)

Initializes a new instance of the NullReferenceException class with a specified error message.

public NullReferenceException(string message)

Parameters

message string

A String that describes the error. The content of message is intended to be understood by humans. The caller of this constructor is required to ensure that this string has been localized for the current system culture.

NullReferenceException(string, Exception)

Initializes a new instance of the NullReferenceException class with a specified error message and a reference to the inner exception that is the cause of this exception.

public NullReferenceException(string message, Exception innerException)

Parameters

message string

The error message that explains the reason for the exception.

innerException Exception

The exception that is the cause of the current exception. If the innerException parameter is not null, the current exception is raised in a catch block that handles the inner exception.