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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

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library
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