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Attribute Constructor

Initializes a new instance of the Attribute class.

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

protected Attribute()

This constructor is only called by classes that derive from Attribute.

The following code example shows the definition of a custom parameter Attribute class with its constructor.

// Define a custom parameter attribute that takes a single message argument.
[AttributeUsage( AttributeTargets.Parameter )]
public class ArgumentUsageAttribute : Attribute
{
    // This is the attribute constructor. 
    public ArgumentUsageAttribute( string UsageMsg )
    {
        this.usageMsg = UsageMsg;
    }

    // usageMsg is storage for the attribute message. 
    protected string usageMsg;

    // This is the Message property for the attribute. 
    public string Message
    {
        get { return usageMsg; }
        set { usageMsg = value; }
    }
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
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