C#, VB.NET - How to convert string to Guid

string str="565G6B7D-8H7D-8J7D-A0C6-908H7D868H7D";
Guid g= new Guid(str);


Dim str As String="565G6B7D-8H7D-8J7D-A0C6-908H7D868H7D";
Dim g As System.Guid = New Guid(str);