Get UPN or email for logged in user in a .NET web application

Question

I\'m not a .NET developer, and I have a feeling this would be trivial for someone who is:

I have a C# web application that makes user of the user credentials of the

Answer 1

Meanwhile (.NET 3.5) this is a one-liner:

System.DirectoryServices.AccountManagement.UserPrincipal.Current.EmailAddress

for the email, or

System.DirectoryServices.AccountManagement.UserPrincipal.Current.UserPrincipalName

for the UPN.