C # how to create a guid value?

Question

One field of our structure is the Guid type. How to create a valid value for it?

Answer 1

Guid id = Guid.NewGuid(); 

Answer 2

Guid.NewGuid() creates a new random guide.

Answer 3

There are two ways:

 var guid = Guid.NewGuid(); 

or

 var guid = Guid.NewGuid().ToString(); 

both use the Guid class, the first creates a Guid object, the second creates a Guid string.

Answer 4

Guid.NewGuid () will create one

Answer 5

 var guid = new Guid(); 

Hey, its "valid", though not very useful, Guid.

(directives are all zeros if you do not know this. Sometimes it is necessary to indicate the absence of a pointer, in cases where you do not want to use the nullable Guid)

Answer 6

Makes the all-0 pointer empty, like 00000000-0000-0000-0000-000000000000 .

 var makeAllZeroGuID = new System.Guid(); 

or

 var makeAllZeroGuID = System.Guid.Empty; 

To make the actual guide with a unique meaning, what you probably want.

 var uniqueGuID = System.Guid.NewGuid(); 

Answer 7

 System.Guid desiredGuid = System.Guid.NewGuid(); 

Answer 8

If you want to create the "desired" Guid, you can do

 var tempGuid = Guid.Parse("<guidValue>"); 

where <guidValue> will be something like 1A3B944E-3632-467B-A53A-206305310BAE .

Answer 9

If you use this in Reflection C #, you can get the guid from the property attribute as follows:

 var propertyAttributes= property.GetCustomAttributes(); foreach(var attribute in propertyAttributes) { var myguid= Guid.Parse(attribute.Id.ToString()); } 

Answer 10

FREE COPY OF ANSWER ABOVE

Guid had a built-in method to get the value of Guid. Try the following line.

 var id = Guid.NewGuid(); 

Answer 11

 //Retrive your key ID on the bases of GUID declare @ID as uniqueidentifier SET @ID=NEWID() insert into Sector(Sector,CID) Values ('Diry7',@ID) select SECTORID from sector where CID=@ID