ArgumentException Constructor (String, String)
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ArgumentException Constructor (String, String)

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

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

public ArgumentException(
	string message,
	string paramName
)

Parameters

message
Type: System.String
The error message that explains the reason for the exception.
paramName
Type: System.String
The name of the parameter that caused the current exception.

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 paramName. The content of paramName is intended to be understood by humans.

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

Property

Value

Message

The error message string.

ParamName

The parameter name string.

The following code example demonstrates how to call the ArgumentException constructor. This code example is part of a larger example provided for the ArgumentException class.


static int DivideByTwo(int num) 
{
    // If num is an odd number, throw an ArgumentException.
    if ((num & 1) == 1)
        throw new ArgumentException("Number must be even", "num");

    // num is even, return half of its value.
    return num / 2;
}


.NET Framework

Supported in: 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

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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