Guid Structure
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Represents a globally unique identifier (GUID).
Assembly: mscorlib (in mscorlib.dll)
The Guid type exposes the following members.
| Name | Description | |
|---|---|---|
 | Guid(array<Byte>) | Initializes a new instance of the Guid class using the specified array of bytes. |
| Guid(String) | Initializes a new instance of the Guid class using the value represented by the specified string. |
| Guid(Int32, Int16, Int16, array<Byte>) | Initializes a new instance of the Guid class using the specified integers and byte array. |
| Guid(Int32, Int16, Int16, Byte, Byte, Byte, Byte, Byte, Byte, Byte, Byte) | Initializes a new instance of the Guid class using the specified integers and bytes. |
| Name | Description | |
|---|---|---|
| CompareTo(Guid) | Compares this instance to a specified Guid object and returns an indication of their relative values. |
| CompareTo(Object) | Compares this instance to a specified object and returns an indication of their relative values. |
| Equals(Guid) | Returns a value indicating whether this instance and a specified Guid object represent the same value. |
| Equals(Object) | Returns a value indicating whether this instance is equal to a specified object. (Overrides ValueType::Equals(Object).) |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
| GetHashCode | Returns the hash code for this instance. (Overrides ValueType::GetHashCode().) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
 | NewGuid | Initializes a new instance of the Guid class. |
| Parse | Converts the string representation of a GUID to the equivalent Guid value. |
| ParseExact | Converts the string representation of a GUID to the equivalent Guid value, provided that the string is in the specified format. |
| 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 ValueType::ToString().) |
| ToString(String) | Returns a String representation of the value of this Guid instance, according to the provided format specifier. |
| ToString(String, IFormatProvider) | Returns a String representation of the value of this instance of the Guid class, according to the provided format specifier and culture-specific format information. |
| TryParse | Converts the string representation of a GUID to the equivalent Guid value. |
| TryParseExact | Converts the string representation of a GUID to the equivalent Guid value, provided that the string is in the specified format. |
| Name | Description | |
|---|---|---|
 | Equality | Indicates whether the values of two specified Guid objects are equal. |
| Inequality | Returns an indication whether the values of two specified Guid objects are not equal. |
The following example uses the GuidAttribute class to assign a GUID to a user-defined class and an interface. It retrieves the value of the GUID by calling the Attribute::GetCustomAttribute method and compares it with two other GUIDs to determine whether they are equal.
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