C new guid
A Guid
in C#!
A Guid
(Globally Unique Identifier) is a 128-bit integer that is used to identify a unique instance of a class or object. It is a 32-character hexadecimal string that is typically used as a primary key in a database or as a unique identifier in a distributed system.
In C#, a Guid
is represented by the System.Guid
struct, which is part of the.NET Framework. You can create a new Guid
using the Guid.NewGuid()
method, which generates a random Guid
value.
Here's an example:
Guid myGuid = Guid.NewGuid();
Console.WriteLine(myGuid.ToString()); // Output: a 32-character hexadecimal string
You can also create a Guid
from a string using the Guid.Parse()
method:
string guidString = "12345678-1234-1234-1234-123456789012";
Guid myGuid = Guid.Parse(guidString);
Guid
values are unique and can be used to identify a specific instance of a class or object. They are often used in scenarios where a unique identifier is required, such as:
- As a primary key in a database
- As a unique identifier in a distributed system
- As a way to identify a specific instance of a class or object
Note that Guid
values are not guaranteed to be sequential or contiguous, and they are not necessarily sorted in any particular order.