update active directory interface to sync to mssql and to sync custom attributes

Modules.Interfaces/ActiveDirectoryInterface/UserPrincipalEx.vb

@@ -0,0 +1,36 @@
+Imports System.DirectoryServices.AccountManagement
+
+<DirectoryRdnPrefix("CN")>
+<DirectoryObjectClass("Person")>
+Public Class UserPrincipalEx
+    Inherits UserPrincipal
+
+    Public Sub New(Context As PrincipalContext)
+        MyBase.New(Context)
+    End Sub
+
+    Public Sub New(Context As PrincipalContext, samAccountName As String, Password As String, Enabled As Boolean)
+        MyBase.New(Context, samAccountName, Password, Enabled)
+    End Sub
+
+    Public Overloads Shared Function FindByIdentity(ByVal Context As PrincipalContext, ByVal IdentityValue As String) As UserPrincipalEx
+        Return CType(FindByIdentityWithType(Context, GetType(UserPrincipalEx), IdentityValue), UserPrincipalEx)
+    End Function
+
+    Public Overloads Shared Function FindByIdentity(ByVal Context As PrincipalContext, ByVal IdentityType As IdentityType, ByVal IdentityValue As String) As UserPrincipalEx
+        Return CType(FindByIdentityWithType(Context, GetType(UserPrincipalEx), IdentityType, IdentityValue), UserPrincipalEx)
+    End Function
+
+    Public Function GetAttributeValue(AttributeName As String) As String
+        Return TryGetAttribute(AttributeName)
+    End Function
+
+    Private Function TryGetAttribute(AttributeName As String) As String
+        Dim oAttribute = ExtensionGet(AttributeName)
+
+        If oAttribute.Length <> 1 Then
+            Return String.Empty
+        End If
+        Return CStr(oAttribute(0))
+    End Function
+End Class