How do I get the current username in .NET using C#?

Try the property: Environment.UserName.

If you are in a network of users, then the username will be different:

Environment.UserName
- Will Display format : 'Username'

rather than

System.Security.Principal.WindowsIdentity.GetCurrent().Name
- Will Display format : 'NetworkName\Username'

Choose the format you want.

Option A)

string userName = System.Security.Principal.WindowsIdentity.GetCurrent().Name;

Returns: NetworkName\Username
Gets the user's Windows logon name.
Details: https://docs.microsoft.com/en-us/dotnet/api/system.security.principal.windowsidentity

Option B)

string userName = Environment.UserName

Returns: Username
Gets the user name of the person who is associated with the current thread.
Details: https://docs.microsoft.com/en-us/dotnet/api/system.environment.username

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