Translating VB.NET-code into C#.NET + ASP.NET

From: Sjakie (Sjakie_at_discussions.microsoft.com)
Date: 08/07/04 

Date: Sat, 7 Aug 2004 02:55:01 -0700

This is the code I like to see translated in C#, but I can't do it myself.
Can somebody help me with this one??

Sub Application_AuthenticateRequest(sender As Object, e As EventArgs)
    If Request.IsAuthenticated Then
        'Determine this user's roles
        Dim reader As SqlDataReader = _
              SqlHelper.ExecuteReader(connection string, _
              CommandType.StoredProcedure, "rolesForUser", _
              New SqlParameter("@Username", User.Identity.Name))

        ' Create an array of role names
        Dim roleList As New ArrayList
        Do While reader.Read()
            roleList.Add(reader("Name"))
        Loop

        'Convert the roleList ArrayList to a String array
        Dim roleListArray As String() = roleList.ToArray(GetType(String))

        'Add the roles to the User Principal
        HttpContext.Current.User = _
            New GenericPrincipal(User.Identity, roleListArray)
    End If
End Sub

Thanx