System.Guid Structure

Represents a globally unique identifier (GUID).

Namespace: System

Assembly: System.Runtime (in System.Runtime.dll)

Syntax

public struct Guid

Remarks

A GUID is a 128-bit integer that is unique across both space and time with a very high probability. It is used to identify objects, interfaces, and other items.

GUIDs are composed of 32 hexadecimal digits, displayed in five groups separated by hyphens, in the form 8-4-4-4-12. For example:

3F2504E0-43BE-4B21-B703-71F8A832F6C5

The .NET Framework provides the Guid structure to represent GUIDs. You can use this structure to generate new GUIDs, parse existing GUIDs, and perform comparisons.

Constructors

Name	Description
`Guid(byte[])`	Initializes a new instance of the `Guid` structure with the specified array of bytes.
`Guid(int, short, short, byte[])`	Initializes a new instance of the `Guid` structure with the specified integers and byte array.
`Guid(int, short, short, byte, byte, byte, byte, byte, byte, byte, byte)`	Initializes a new instance of the `Guid` structure with the specified integers and bytes.
`Guid(string)`	Initializes a new instance of the `Guid` structure from the specified string representation.

Fields

Name	Description
`Empty`	Gets a new instance of the `Guid` structure that is guaranteed to be the same as the `Guid(0,0,0,0,0,0,0,0,0,0,0)` structure, i.e. all zeros.

Methods

Name	Description
`CompareTo(object)`	Compares the current instance with another object of the same type.
`CompareTo(Guid)`	Compares the current instance with another `Guid` structure.
`Equals(object)`	Determines whether the specified object is equal to the current instance.
`Equals(Guid)`	Determines whether the specified `Guid` structure is equal to the current instance.
`GetHashCode()`	Returns the hash code for the current instance.
`NewGuid()`	Initializes a new instance of the `Guid` structure.
`Parse(string)`	Converts the specified string representation of a GUID to its `Guid` equivalent.
`ToString()`	Returns the string representation of this instance.
`ToString(string format)`	Converts the value of this instance to its equivalent string representation using the specified format.
`TryFormat(Span<char>, int&, ReadOnlySpan<char>, ...)`	Attempts to format the current `Guid` into the provided buffer as a string.

Operators

Name	Description
`==`	Compares two `Guid` structures for equality.
`!=`	Compares two `Guid` structures for inequality.