ArgumentNullException Constructors

Definition

Namespace:

System

Assembly:

System.Runtime.dll

Initializes a new instance of the ArgumentNullException class.

Overloads

ArgumentNullException()	Initializes a new instance of the ArgumentNullException class.
ArgumentNullException(String)	Initializes a new instance of the ArgumentNullException class with the name of the parameter that causes this exception.
ArgumentNullException(SerializationInfo, StreamingContext)	Obsolete. Initializes a new instance of the ArgumentNullException class with serialized data.
ArgumentNullException(String, Exception)	Initializes a new instance of the ArgumentNullException class with a specified error message and the exception that is the cause of this exception.
ArgumentNullException(String, String)	Initializes an instance of the ArgumentNullException class with a specified error message and the name of the parameter that causes this exception.

ArgumentNullException()

Source:

ArgumentNullException.cs

Initializes a new instance of the ArgumentNullException class.

public:
 ArgumentNullException();

public ArgumentNullException ();

Public Sub New ()

Remarks

This constructor initializes the Message property of the new instance to a system-supplied message that describes the error, such as "Value cannot be null." This message takes into account the current system culture.

The following table shows the initial property values for an instance of ArgumentNullException.

Property	Value
InnerException	A null reference (Nothing in Visual Basic).
Message	A localized error message string, such as "Value cannot be null." for the English language.

ArgumentNullException(String)

Source:

ArgumentNullException.cs

Initializes a new instance of the ArgumentNullException class with the name of the parameter that causes this exception.

public:
 ArgumentNullException(System::String ^ paramName);

public ArgumentNullException (string? paramName);

new ArgumentNullException : string -> ArgumentNullException

Public Sub New (paramName As String)

Parameters

paramName

String

The name of the parameter that caused the exception.

Remarks

This constructor initializes the Message property of the new instance to a system-supplied message that describes the error and includes the parameter name. This message takes into account the current system culture.

This constructor initializes the ParamName property of the new instance using the paramName parameter. The content of paramName is intended to be understood by humans.

The following table shows the initial property values for an instance of ArgumentNullException.

Property	Value
InnerException	A null reference (Nothing in Visual Basic).
Message	A localized error message string that identifies the null argument. For example, if the paramName argument is "arg1", the English language message string is: On .NET 5+ and .NET Core: Value cannot be null. (Parameter name: 'arg1') On .NET Framework: Value cannot be null.\r\nParameter name: arg1
ParamName	The parameter name string.

ArgumentNullException(SerializationInfo, StreamingContext)

Source:

ArgumentNullException.cs

Caution

This API supports obsolete formatter-based serialization. It should not be called or extended by application code.

Initializes a new instance of the ArgumentNullException class with serialized data.

protected:
 ArgumentNullException(System::Runtime::Serialization::SerializationInfo ^ info, System::Runtime::Serialization::StreamingContext context);

[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
protected ArgumentNullException (System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context);

[<System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
new ArgumentNullException : System.Runtime.Serialization.SerializationInfo * System.Runtime.Serialization.StreamingContext -> ArgumentNullException

Protected Sub New (info As SerializationInfo, context As StreamingContext)

Parameters

info

SerializationInfo

The object that holds the serialized object data.

context

StreamingContext

An object that describes the source or destination of the serialized data.

Attributes

ObsoleteAttribute

Remarks

This constructor is called during deserialization to reconstitute the exception object transmitted over a stream. For more information, see XML and SOAP Serialization.

See also

• XML and SOAP Serialization

ArgumentNullException(String, Exception)

Source:

ArgumentNullException.cs

Initializes a new instance of the ArgumentNullException class with a specified error message and the exception that is the cause of this exception.

public:
 ArgumentNullException(System::String ^ message, Exception ^ innerException);

public ArgumentNullException (string? message, Exception? innerException);

new ArgumentNullException : string * Exception -> ArgumentNullException

Public Sub New (message As String, innerException As Exception)

Parameters

message

String

The error message that explains the reason for this exception.

innerException

Exception

The exception that is the cause of the current exception, or a null reference (Nothing in Visual Basic) if no inner exception is specified.

ArgumentNullException(String, String)

Source:

ArgumentNullException.cs

Initializes an instance of the ArgumentNullException class with a specified error message and the name of the parameter that causes this exception.

public:
 ArgumentNullException(System::String ^ paramName, System::String ^ message);

public ArgumentNullException (string? paramName, string? message);

new ArgumentNullException : string * string -> ArgumentNullException

Public Sub New (paramName As String, message As String)

Parameters

paramName

String

The name of the parameter that caused the exception.

message

String

A message that describes the error.

Remarks

This constructor initializes the Message property of the new instance using the value of the message parameter. The content of the message parameter 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.

This constructor initializes the ParamName property of the new instance using the paramName parameter. The content of paramName is intended to be understood by humans.

The following table shows the initial property values for an instance of ArgumentNullException.

Property	Value
InnerException	A null reference (Nothing in Visual Basic).
Message	The error message string.
ParamName	The parameter name string.