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IntPtr.Zero Field

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

[Visual Basic]
Public Shared ReadOnly Zero As IntPtr
[C#]
public static readonly IntPtr Zero;
[C++]
public: static IntPtr Zero;
[JScript]
public static var Zero : IntPtr;

Remarks

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)... ".

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework, Common Language Infrastructure (CLI) Standard

See Also

IntPtr Structure | IntPtr Members | System Namespace

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