get username from visitor ?

[nickname]

Hello,

I'm looking for a way to get the username from the visitor from my webapplication. Any idea how to do that?

I use following code but it only works on my local developing machine:

Dim strUser As String
strUser = Request.LogonUserIdentity.Name.ToString()
Me.txtPersoon.Text = strUser.Substring(strUser.IndexOf("\") + 1)

tnx

nickname