What is the default value for Guid

Question

The default value for int is 0   for string is    and for boolean it is false  Could someone please clarify what the default value for guid is

User · Answer

To extend answers above  you cannot use Guid default value with Guid Empty as an optional argument in method  indexer or delegate definition  because it will give you compile time error  Use default Guid  or new Guid   instead

User · Answer

You can use Guid Empty  It is a read-only instance of the Guid structure  with the value of 00000000-0000-0000-0000-000000000000 you can also  use these instead var g   new Guid    var g   default Guid    beware not to use Guid NewGuid   because it will generate a new Guid  use one of the options above which you and your team think it is more readable and stick to it  Do not mix different options across the code  I think the Guid Empty is the best one since new Guid   might make us think it is generating a new guid and some may not know what is the value of default Guid

User · Answer

Create a Empty Guid or New Guid Using a Class     Default value of Guid is 00000000-0000-0000-0000-000000000000  public class clsGuid  ---This is class Name       public Guid MyGuid   get  set       static void Main string   args                        clsGuid cs   new clsGuid                   Console WriteLine cs MyGuid   --this will give empty Guid   00000000-0000-0000-0000-000000000000               cs MyGuid   new Guid                Console WriteLine cs MyGuid   ----this will also give empty Guid   00000000-0000-0000-0000-000000000000               cs MyGuid   Guid NewGuid                Console WriteLine cs MyGuid   --this way  it will give new guid   d94828f8-7fa0-4dd0-bf91-49d81d5646af               Console ReadKey    --this line holding the output screen in console application

User · Answer

You can use these methods to get an empty guid  The result will be a guid with all it s digits being 0 s -  00000000-0000-0000-0000-000000000000    new Guid    default Guid   Guid Empty

User · Answer

The default value for a GUID is empty   eg  00000000-0000-0000-0000-000000000000  This can be invoked using Guid Empty or new Guid   If you want a new GUID  you use Guid NewGuid

[c#] What is the default value for Guid?

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