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ArgumentNullException Constructor (String)

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

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public:
ArgumentNullException(
	String^ paramName
)

Parameters

paramName
Type: System::String

The name of the parameter that caused the exception.

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:

Value cannot be null.
Parameter name: arg01

ParamName

The parameter name string.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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