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Q: searching active directory

Hello,
Here is my code that I got from internet and I am assuming this give me
e-mail address of the people in the active directory.

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
'Put user code to initialize the page here
Dim rootEntry As New DirectoryEntry( "GC://dc=oecc,dc=net" )
Dim searcher As New DirectorySearch er(rootEntry)
searcher.Proper tiesToLoad.Add( "mail")

Dim results As SearchResultCol lection
results = searcher.FindAl l()

Dim result As SearchResult

For Each result In results
Response.Write( result.Properti es("mail")(0))
Next

End Sub

I got “Object reference not set to an instance of an object” at line
Response.Write( result.Properti es("mail")(0)) , what am I missing?
Thanks,
Jim.

Nov 19 '05 #1
12 1557
Hi, Jim.

Have you had a look at :

http://msdn.microsoft.com/library/de...etadsearch.asp

?
Juan T. Llibre
ASP.NET MVP
===========
"JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
news:61******** *************** ***********@mic rosoft.com...
Hello,
Here is my code that I got from internet and I am assuming this give me
e-mail address of the people in the active directory.

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
'Put user code to initialize the page here
Dim rootEntry As New DirectoryEntry( "GC://dc=oecc,dc=net" )
Dim searcher As New DirectorySearch er(rootEntry)
searcher.Proper tiesToLoad.Add( "mail")

Dim results As SearchResultCol lection
results = searcher.FindAl l()

Dim result As SearchResult

For Each result In results
Response.Write( result.Properti es("mail")(0))
Next

End Sub

I got "Object reference not set to an instance of an object" at line
Response.Write( result.Properti es("mail")(0)) , what am I missing?
Thanks,
Jim.


Nov 19 '05 #2
I whci somebody could tell me what I am missing, I got the code from that
site but not workign for me.

"Juan T. Llibre" wrote:
Hi, Jim.

Have you had a look at :

http://msdn.microsoft.com/library/de...etadsearch.asp

?
Juan T. Llibre
ASP.NET MVP
===========
"JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
news:61******** *************** ***********@mic rosoft.com...
Hello,
Here is my code that I got from internet and I am assuming this give me
e-mail address of the people in the active directory.

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
'Put user code to initialize the page here
Dim rootEntry As New DirectoryEntry( "GC://dc=oecc,dc=net" )
Dim searcher As New DirectorySearch er(rootEntry)
searcher.Proper tiesToLoad.Add( "mail")

Dim results As SearchResultCol lection
results = searcher.FindAl l()

Dim result As SearchResult

For Each result In results
Response.Write( result.Properti es("mail")(0))
Next

End Sub

I got "Object reference not set to an instance of an object" at line
Response.Write( result.Properti es("mail")(0)) , what am I missing?
Thanks,
Jim.


Nov 19 '05 #3
Shouldn't your DirectoryEntry Constructor start with LDAP:// ?

"JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
news:61******** *************** ***********@mic rosoft.com...
Hello,
Here is my code that I got from internet and I am assuming this give me
e-mail address of the people in the active directory.

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
'Put user code to initialize the page here
Dim rootEntry As New DirectoryEntry( "GC://dc=oecc,dc=net" )
Dim searcher As New DirectorySearch er(rootEntry)
searcher.Proper tiesToLoad.Add( "mail")

Dim results As SearchResultCol lection
results = searcher.FindAl l()

Dim result As SearchResult

For Each result In results
Response.Write( result.Properti es("mail")(0))
Next

End Sub

I got "Object reference not set to an instance of an object" at line
Response.Write( result.Properti es("mail")(0)) , what am I missing?
Thanks,
Jim.

Nov 19 '05 #4
yes but it requires a server name, which server I need to give?

"David Jessee" wrote:
Shouldn't your DirectoryEntry Constructor start with LDAP:// ?

"JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
news:61******** *************** ***********@mic rosoft.com...
Hello,
Here is my code that I got from internet and I am assuming this give me
e-mail address of the people in the active directory.

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
'Put user code to initialize the page here
Dim rootEntry As New DirectoryEntry( "GC://dc=oecc,dc=net" )
Dim searcher As New DirectorySearch er(rootEntry)
searcher.Proper tiesToLoad.Add( "mail")

Dim results As SearchResultCol lection
results = searcher.FindAl l()

Dim result As SearchResult

For Each result In results
Response.Write( result.Properti es("mail")(0))
Next

End Sub

I got "Object reference not set to an instance of an object" at line
Response.Write( result.Properti es("mail")(0)) , what am I missing?
Thanks,
Jim.


Nov 19 '05 #5
The server which is managing the
Active Directory you want to search.

You'll also need to feed the name and password
of a user authorized to access the LDAP server.

C#
DirectoryEntry rootentry = new DirectoryEntry( LDAP://ADservername,
"username","pas sword");

VB.NET
Dim rootEntry As New DirectoryEntry( LDAP://ADservername,
"username","pas sword")

See:
http://www.codeproject.com/aspnet/ac...rectoryuse.asp

Juan T. Llibre
ASP.NET MVP
===========
"JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
news:66******** *************** ***********@mic rosoft.com...
yes but it requires a server name, which server I need to give?

"David Jessee" wrote:
Shouldn't your DirectoryEntry Constructor start with LDAP:// ?

"JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
news:61******** *************** ***********@mic rosoft.com...
> Hello,
> Here is my code that I got from internet and I am assuming this give me
> e-mail address of the people in the active directory.
>
> Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
> System.EventArg s) Handles MyBase.Load
> 'Put user code to initialize the page here
> Dim rootEntry As New DirectoryEntry( "GC://dc=oecc,dc=net" )
> Dim searcher As New DirectorySearch er(rootEntry)
> searcher.Proper tiesToLoad.Add( "mail")
>
> Dim results As SearchResultCol lection
> results = searcher.FindAl l()
>
> Dim result As SearchResult
>
> For Each result In results
> Response.Write( result.Properti es("mail")(0))
> Next
>
> End Sub
>
> I got "Object reference not set to an instance of an object" at line
> Response.Write( result.Properti es("mail")(0)) , what am I missing?
> Thanks,
> Jim.
>
>
>


Nov 19 '05 #6
Your LDAP path should look like this :

LDAP://corp.bedking.co m/CN=Users,DC=cor p,DC=bedking,DC =com

Juan T. Llibre
ASP.NET MVP
===========
"Juan T. Llibre" <no***********@ nowhere.com> wrote in message
news:%2******** **********@TK2M SFTNGP15.phx.gb l...
The server which is managing the
Active Directory you want to search.

You'll also need to feed the name and password
of a user authorized to access the LDAP server.

C#
DirectoryEntry rootentry = new DirectoryEntry( LDAP://ADservername,
"username","pas sword");

VB.NET
Dim rootEntry As New DirectoryEntry( LDAP://ADservername,
"username","pas sword")

See:
http://www.codeproject.com/aspnet/ac...rectoryuse.asp

Juan T. Llibre
ASP.NET MVP
===========
"JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
news:66******** *************** ***********@mic rosoft.com...
yes but it requires a server name, which server I need to give?

"David Jessee" wrote:
Shouldn't your DirectoryEntry Constructor start with LDAP:// ?

"JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
news:61******** *************** ***********@mic rosoft.com...
> Hello,
> Here is my code that I got from internet and I am assuming this give
> me
> e-mail address of the people in the active directory.
>
> Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
> System.EventArg s) Handles MyBase.Load
> 'Put user code to initialize the page here
> Dim rootEntry As New DirectoryEntry( "GC://dc=oecc,dc=net" )
> Dim searcher As New DirectorySearch er(rootEntry)
> searcher.Proper tiesToLoad.Add( "mail")
>
> Dim results As SearchResultCol lection
> results = searcher.FindAl l()
>
> Dim result As SearchResult
>
> For Each result In results
> Response.Write( result.Properti es("mail")(0))
> Next
>
> End Sub
>
> I got "Object reference not set to an instance of an object" at line
> Response.Write( result.Properti es("mail")(0)) , what am I missing?
> Thanks,
> Jim.
>
>
>


Nov 19 '05 #7
Thanks Juan,
It hellped well. I still have a problem though. This code gives me the
display name from active directory for myUser, I was trying to achive e-mail
of the user, how should I get it?
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
'Put user code to initialize the page here
Dim rootEntry As New DirectoryEntry( "LDAP://DC=MYDOMAIN,DC= net",
"MYDOMAIN\Admin ", "myPassword ")

Dim searcher As New DirectorySearch er(rootEntry)
searcher.Proper tiesToLoad.Add( "cn")
searcher.Proper tiesToLoad.Add( "mail")

searcher.Filter = "(&(anr=myUser) (objectCategory =person))"

Dim results As SearchResultCol lection
results = searcher.FindAl l()

Dim result As SearchResult

For Each result In results
Response.Write( result.GetDirec toryEntry.Name)
Next

End Sub
Thanks,
Jim.
"Juan T. Llibre" wrote:
The server which is managing the
Active Directory you want to search.

You'll also need to feed the name and password
of a user authorized to access the LDAP server.

C#
DirectoryEntry rootentry = new DirectoryEntry( LDAP://ADservername,
"username","pas sword");

VB.NET
Dim rootEntry As New DirectoryEntry( LDAP://ADservername,
"username","pas sword")

See:
http://www.codeproject.com/aspnet/ac...rectoryuse.asp

Juan T. Llibre
ASP.NET MVP
===========
"JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
news:66******** *************** ***********@mic rosoft.com...
yes but it requires a server name, which server I need to give?

"David Jessee" wrote:
Shouldn't your DirectoryEntry Constructor start with LDAP:// ?

"JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
news:61******** *************** ***********@mic rosoft.com...
> Hello,
> Here is my code that I got from internet and I am assuming this give me
> e-mail address of the people in the active directory.
>
> Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
> System.EventArg s) Handles MyBase.Load
> 'Put user code to initialize the page here
> Dim rootEntry As New DirectoryEntry( "GC://dc=oecc,dc=net" )
> Dim searcher As New DirectorySearch er(rootEntry)
> searcher.Proper tiesToLoad.Add( "mail")
>
> Dim results As SearchResultCol lection
> results = searcher.FindAl l()
>
> Dim result As SearchResult
>
> For Each result In results
> Response.Write( result.Properti es("mail")(0))
> Next
>
> End Sub
>
> I got "Object reference not set to an instance of an object" at line
> Response.Write( result.Properti es("mail")(0)) , what am I missing?
> Thanks,
> Jim.
>
>
>


Nov 19 '05 #8
You'd need to modify the Filter.

searcher.Filter = "(&(anr=myUser) (objectCategory =person))"

Changing the objectCategory to the
category for "mail" should do it.

See a complete listing for LDAP objectCategorie s at:
http://dotnetjunkies.com/WebLog/bria.../31/40012.aspx


Juan T. Llibre
ASP.NET MVP
===========
"JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
news:D5******** *************** ***********@mic rosoft.com...
Thanks Juan,
It hellped well. I still have a problem though. This code gives me the
display name from active directory for myUser, I was trying to achive
e-mail
of the user, how should I get it?
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
'Put user code to initialize the page here
Dim rootEntry As New DirectoryEntry( "LDAP://DC=MYDOMAIN,DC= net",
"MYDOMAIN\Admin ", "myPassword ")

Dim searcher As New DirectorySearch er(rootEntry)
searcher.Proper tiesToLoad.Add( "cn")
searcher.Proper tiesToLoad.Add( "mail")

searcher.Filter = "(&(anr=myUser) (objectCategory =person))"

Dim results As SearchResultCol lection
results = searcher.FindAl l()

Dim result As SearchResult

For Each result In results
Response.Write( result.GetDirec toryEntry.Name)
Next

End Sub
Thanks,
Jim.
"Juan T. Llibre" wrote:
The server which is managing the
Active Directory you want to search.

You'll also need to feed the name and password
of a user authorized to access the LDAP server.

C#
DirectoryEntry rootentry = new DirectoryEntry( LDAP://ADservername,
"username","pas sword");

VB.NET
Dim rootEntry As New DirectoryEntry( LDAP://ADservername,
"username","pas sword")

See:
http://www.codeproject.com/aspnet/ac...rectoryuse.asp

Juan T. Llibre
ASP.NET MVP
===========
"JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
news:66******** *************** ***********@mic rosoft.com...
> yes but it requires a server name, which server I need to give?
>
> "David Jessee" wrote:
>
>> Shouldn't your DirectoryEntry Constructor start with LDAP:// ?
>>
>> "JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
>> news:61******** *************** ***********@mic rosoft.com...
>> > Hello,
>> > Here is my code that I got from internet and I am assuming this give
>> > me
>> > e-mail address of the people in the active directory.
>> >
>> > Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
>> > System.EventArg s) Handles MyBase.Load
>> > 'Put user code to initialize the page here
>> > Dim rootEntry As New DirectoryEntry( "GC://dc=oecc,dc=net" )
>> > Dim searcher As New DirectorySearch er(rootEntry)
>> > searcher.Proper tiesToLoad.Add( "mail")
>> >
>> > Dim results As SearchResultCol lection
>> > results = searcher.FindAl l()
>> >
>> > Dim result As SearchResult
>> >
>> > For Each result In results
>> > Response.Write( result.Properti es("mail")(0))
>> > Next
>> >
>> > End Sub
>> >
>> > I got "Object reference not set to an instance of an object" at line
>> > Response.Write( result.Properti es("mail")(0)) , what am I missing?
>> > Thanks,
>> > Jim.
>> >
>> >
>> >
>>
>>
>>


Nov 19 '05 #9
Juan,
Thanks for your help. your are very helpful. when I did,
searcher.Filter = "(&(anr=myUser) (objectCategory =mail))"
this did not give anything. I am using
Response.Write( result.GetDirec toryEntry.Name) to display result, is this
correct?
"Juan T. Llibre" wrote:
You'd need to modify the Filter.

searcher.Filter = "(&(anr=myUser) (objectCategory =person))"

Changing the objectCategory to the
category for "mail" should do it.

See a complete listing for LDAP objectCategorie s at:
http://dotnetjunkies.com/WebLog/bria.../31/40012.aspx


Juan T. Llibre
ASP.NET MVP
===========
"JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
news:D5******** *************** ***********@mic rosoft.com...
Thanks Juan,
It hellped well. I still have a problem though. This code gives me the
display name from active directory for myUser, I was trying to achive
e-mail
of the user, how should I get it?
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
'Put user code to initialize the page here
Dim rootEntry As New DirectoryEntry( "LDAP://DC=MYDOMAIN,DC= net",
"MYDOMAIN\Admin ", "myPassword ")

Dim searcher As New DirectorySearch er(rootEntry)
searcher.Proper tiesToLoad.Add( "cn")
searcher.Proper tiesToLoad.Add( "mail")

searcher.Filter = "(&(anr=myUser) (objectCategory =person))"

Dim results As SearchResultCol lection
results = searcher.FindAl l()

Dim result As SearchResult

For Each result In results
Response.Write( result.GetDirec toryEntry.Name)
Next

End Sub
Thanks,
Jim.
"Juan T. Llibre" wrote:
The server which is managing the
Active Directory you want to search.

You'll also need to feed the name and password
of a user authorized to access the LDAP server.

C#
DirectoryEntry rootentry = new DirectoryEntry( LDAP://ADservername,
"username","pas sword");

VB.NET
Dim rootEntry As New DirectoryEntry( LDAP://ADservername,
"username","pas sword")

See:
http://www.codeproject.com/aspnet/ac...rectoryuse.asp

Juan T. Llibre
ASP.NET MVP
===========
"JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
news:66******** *************** ***********@mic rosoft.com...
> yes but it requires a server name, which server I need to give?
>
> "David Jessee" wrote:
>
>> Shouldn't your DirectoryEntry Constructor start with LDAP:// ?
>>
>> "JIM.H." <JI**@discussio ns.microsoft.co m> wrote in message
>> news:61******** *************** ***********@mic rosoft.com...
>> > Hello,
>> > Here is my code that I got from internet and I am assuming this give
>> > me
>> > e-mail address of the people in the active directory.
>> >
>> > Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
>> > System.EventArg s) Handles MyBase.Load
>> > 'Put user code to initialize the page here
>> > Dim rootEntry As New DirectoryEntry( "GC://dc=oecc,dc=net" )
>> > Dim searcher As New DirectorySearch er(rootEntry)
>> > searcher.Proper tiesToLoad.Add( "mail")
>> >
>> > Dim results As SearchResultCol lection
>> > results = searcher.FindAl l()
>> >
>> > Dim result As SearchResult
>> >
>> > For Each result In results
>> > Response.Write( result.Properti es("mail")(0))
>> > Next
>> >
>> > End Sub
>> >
>> > I got "Object reference not set to an instance of an object" at line
>> > Response.Write( result.Properti es("mail")(0)) , what am I missing?
>> > Thanks,
>> > Jim.
>> >
>> >
>> >
>>
>>
>>


Nov 19 '05 #10

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by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...

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