EventArgs.Empty Field (System)

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Empty Field

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This page is specific to

Microsoft Visual Studio 2005/.NET Framework 2.0

Other versions are also available for the following:

.NET Framework Class Library

EventArgs.Empty Field

Represents an event with no event data.

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

Syntax

Visual Basic (Declaration)

Public Shared ReadOnly Empty As EventArgs

Visual Basic (Usage)

Dim value As EventArgs

value = EventArgs.Empty

public static readonly EventArgs Empty

C++

public:
static initonly EventArgs^ Empty

public static final EventArgs Empty

JScript

public static final var Empty : EventArgs

Remarks

The value of Empty is a read-only instance of EventArgs equivalent to the result of calling the EventArgs constructor.

Platforms

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

Version Information

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

Reference

EventArgs Class
EventArgs Members
System Namespace

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Annotations

Pass this field to events instead of an new instance of EventArgs

David M. Kean - MSFT | Edit | Show History

You should never need to create an instance of the EventArgs class. If you have an event that only needs to take an EventArgs, simply pass this field:

C#:

public class Button
{
    public event EventHandler Click;

    protected virtual void OnClick(EventArgs e)
    {
        if (Click != null)
        {
            Click(this, e);
        }
    }

    private void RaiseClick()
    {
        OnClick(EventArgs.Empty);
    }
}