Hi Dear, I am a junior developer in Asp.net team. I have to develop newer version of one our existing application in vb.net.In which i have to authenticate user with 'AD LDS'. In earlier version of application,It was authenticating user with direct connecting to ad server with searching object credential . But now when i am applying same code to in that scenario , it is not working. Please pull out me from this tremendous problems .

Below is my code which i have used over there .

Dim LdapPath As String = OBJSCUSER.LdapPath
                LdapPath = "LDAP://" + LdapPath
                Username = DomainName + "\" + Username
                Dim de As New DirectoryEntry(LdapPath, Username, Password)
             
                Dim DS As New DirectorySearcher(de)
                DS.Filter = [String].Format("(SAMAccountName={0})", Username)

                DS.PropertiesToLoad.Add("cn")
                Dim result As SearchResult
                Try
                    result = DS.FindOne()
                    DS.Dispose()
                    de.Close()
                    de.Dispose()
                    Return True
                Catch ex As Exception

                    DS.Dispose()
                    de.Close()
                    de.Dispose()
                    'BAL.ErrorLog.CREATEERRORLOG(ex)
                    lError.Visible = True
                    lError.Text = GetLocalResourceObject("e5")
                    'Return False
                End Try

I would appreciate your input.