Has anyone successfuly converted the AuthenticationExtension class,
from the MSDN sample, from C# to VB.Net. I keep recieveing the error

"IAuthenticationExtension must implement 'Overridable Function
IsValidPrincipalName(principalName As String) As Boolean' for
interface"

I actually get the same message for each of the functions in the
IAuthenticationExtension class. This is what my function looks like.

Public Function IsValidPrincipalName(ByVal principalName As String) As
Boolean
Return VerifyUser(principalName)
End Function

Thanks

Has anyone experieced this issue?

[quoted text, click to view]

Visual Basic .NET requires that you name the function you are implementing:

Public Function IsValidPrincipalName(ByVal principalName As String)
As Boolean Implements IAuthenticationExtension.IsValidPrincipalName