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Generate A GUID in C#

Generate Global Unique Identifiers (GUID) Using C# ASP.NET Language

How To Generate A GUID in C#

Generating a GUID in C# is really easy. C# gives a built in function that developers can use to create a new guid. They can also use this method to generate any random guid in C#.

C# offers a static method called NewGuid() as part of the System namespace that creates GUID's. Use this method as below to create new random GUID's in C# and ASP.NET

                    
using System;

public class Program
{
    public static void Main()
    {
        var guid = Guid.NewGuid();
        Console.WriteLine(guid);
    }
}
                    
                    

The output of the above C# code would be a GUID similar to below. It will be similar and not the one in the example below because GUID's are Globally Unique Identifiers.

4031e574-6c7c-4d8c-8bbd-f07f86ef1659

Parse or Convert A String To GUID in C#

We will use the Guid.TryParse() method in C# try parsing a string to a guid

                    
using System;

public class Program
{
    public static void Main()
    {
        if(Guid.TryParse("4031e574-6c7c-4d8c-8bbd-f07f86ef1659", out var result))
			Console.WriteLine("Converted String To Guid");
		else
			Console.WriteLine("Unable to convert String To Guid");
    }
}
                    
                    

The output of the above C# code would a successful conversion of a string to guid:

Converted String To Guid

Empty or Nil GUID in C#

Create an empty GUID or nil GUID in C# using the GUID.Empty() method.

                    
using System;

public class Program
{
    public static void Main()
    {
		var guid = Guid.Empty;
		Console.WriteLine(guid);
    }
}
                    
                    

The output of the above C# code would be an empty guid or a nil guid as below:

00000000-0000-0000-0000-000000000000