Guid Structure

Article
01/16/2013

[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]

Represents a globally unique identifier (GUID).

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

Syntax

'Declaration
<SerializableAttribute> _
Public Structure Guid

[SerializableAttribute]
public struct Guid

[SerializableAttribute]
public value class Guid

[<Sealed>]
[<SerializableAttribute>]
type Guid =  struct end

JScript supports the use of structures, but not the declaration of new ones.

The Guid type exposes the following members.

Constructors

	Name	Description
	Guid(array<Byte> [] () [] [])	Initializes a new instance of the Guid structure by using the specified array of bytes.
	Guid(Int32, Int16, Int16, Byte, Byte, Byte, Byte, Byte, Byte, Byte, Byte)	Initializes a new instance of the Guid structure by using the specified integers and bytes.
	Guid(UInt32, UInt16, UInt16, Byte, Byte, Byte, Byte, Byte, Byte, Byte, Byte)	Initializes a new instance of the Guid structure by using the specified unsigned integers and bytes.

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Methods

	Name	Description
	CompareTo	Compares this instance to a specified object and returns an indication of their relative values.
	Equals	Returns a value that indicates whether this instance is equal to a specified object. (Overrides ValueType. . :: . .Equals(Object).)
	GetHashCode	Returns the hash code for this instance. (Overrides Object. . :: . .GetHashCode() () () ().)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	NewGuid	Initializes a new instance of the Guid structure.
	ToByteArray	Returns a 16-element byte array that contains the value of this instance.
	ToString	Returns a string representation of the value of this instance in registry format. (Overrides Object. . :: . .ToString() () () ().)

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Fields

	Name	Description
	Empty	A read-only instance of the Guid structure whose value is all zeros.

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Remarks

A GUID is a 128-bit integer (16 bytes) that can be used across all computers and networks wherever a unique identifier is required. Such an identifier has a very low probability of being duplicated.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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