I am new to ASP.Net and DNN. I have a custom application that is running in an IFrame and need to retrieve the DNN User Name (logged in User).

I've tried the following VB.Net code::::

Dim PortalID As Integer, UserID As Integer
Dim UserName As String
Dim dnnUserCtrl As New DotNetNuke.Entities.Users.UserController
Dim dnnUserInfo As New DotNetNuke.Entities.Users.UserInfo

PortalID = dnnUserCtrl.GetCurrentUserInfo.PortalID
UserID = dnnUserCtrl.GetCurrentUserInfo.UserID
Username = dnnUserCtrl.GetCurrentUserInfo.Username

Resulting values are:

PrortalID = -1, UserID = -1, and Username = ''

What can i do to retrieve the User Name?

I've not yet gotten it working but i found some interesting ways to get the User or User id at http://forums.asp.net/1045674/showpost.aspx   

The way I understand it, an application opened through an IFrame does not have access to the DotNetNuke properties because it is in like another independent session. So this site discusses ways to pass the specific property values to the new URL/Application without modifing the DNN core code.