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IntPtr.Zero Field

A read-only field that represents a pointer or handle that has been initialized to zero.

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

public static readonly IntPtr Zero
public static final IntPtr Zero
public static final var Zero : IntPtr
Not applicable.

The value of this field is not equivalent to a null reference (Nothing in Visual Basic). Use this field to efficiently determine whether an instance of IntPtr has been set to a value other than zero.

For example, assume the variable, ip, is an instance of IntPtr. You can determine if it has been set by comparing it to the value returned by a constructor, for example: " if ip != new IntPtr(0)... ". However, invoking a constructor to get an unintialized pointer is inefficient. It is better to code either " if ip != IntPtr.Zero... ", or " if !IntPtr.Zero.Equals(ip)... ".

Windows 98, Windows Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0

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