title: inserting guid as primary key - best practice
body: <p>Using GUId as Primary Key. Is this a proper way to implement it during insert?</p>
  
  <pre><code>    var item = new tbl_A(){
      Id = Guid.NewGuid().ToString("D")    
      };
    _context.tbl_A.Add(item);
    _context.SaveChanges();
  </code></pre>