CredentialCache.DefaultCredentials how to get the username and or password

问题

For debugging purpose I wanted to look in the value of username and password of CredentialCache.DefaultCredentials.

I see that there are 2 properties of username and password in CredentialCache.DefaultCredentials and doing

1. CredentialCache.DefaultCredentials.username
2. CredentialCache.DefaultCredentials.passwrod

does not print anything what should I do?

来源：https://stackoverflow.com/questions/40585014/credentialcache-defaultcredentials-how-to-get-the-username-and-or-password