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Second part of my last article see part 1You can use Active Directory Users and Computers MMC to manage your Active
Directory resources. It resides on the Administrative Tools menu on Windows 2000
servers.
The code in Listing 21.26 searches the MCBCorp.Com Windows 2000 Active Directory
domain. It outputs all of the Active Directory objects and their properties, and
then all the data inside, recursively.
Listing 21.26: Using DirectoryEntry (ldapdir1.vb)
Imports
System.DirectoryServices
Class
Test
Dim instance
As DirectoryServicesCOMException
Shared Sub
Main(ByVal args As
String())
' the name of the domain
Dim entry
As New
DirectoryEntry("LDAP://MCBcorp, DC=com")
Console.WriteLine("Name = " +
entry.Name)
Console.WriteLine("Path = " +
entry.Path)
Console.WriteLine("SchemaClassName =
" + entry.SchemaClassName)
Console.WriteLine("Properties:")
Console.WriteLine("=====================================")
For
Each key As
String In entry.Properties.PropertyNames
Try
Console.WriteLine(vbTab & key &
" = ")
For
Each objCollection As
[Object] In entry.Properties(key)
Console.WriteLine(vbTab & vbTab &
Convert.ToString(objCollection))
Next
Console.WriteLine("===================================")
Catch
End
Try
Next
Dim mySearcher As
New
System.DirectoryServices.DirectorySearcher(entry)
mySearcher.Filter = ("(objectClass=*)")
Console.WriteLine("Active Directory
Information")
Console.WriteLine("=====================================")
For
Each resEnt As
System.DirectoryServices.SearchResult In
mySearcher.FindAll()
Try
Console.WriteLine(resEnt.GetDirectoryEntry().Name.ToString())
Console.WriteLine(resEnt.GetDirectoryEntry().Path.ToString())
Console.WriteLine(resEnt.GetDirectoryEntry().NativeGuid.ToString())
Console.WriteLine("===================================")
Catch
End
Try
Next
End
Sub
End
Class
You can create entries and properties in the Active Directory. You simply create
a new directory or use an existing one with the DirectoryEntry class and then
assign the values you want to the specific properties. When you have finished
assigning the values, call the CommitChanges() method to cause the changes to
occur in the Active Directory. The sample code in Listing 21.27 achieves this
update operation.
Listing 21.27 also shows you how to pick individual properties of Active
Directory objects! The properties term of Active Directory is not related to the
VB.NET class properties used with get and set. Active Directory properties are an
array of adjustable object property members with specific names determined by
the Active Directory schema. For example, you can set the following properties
for objects: sn, givenName, title, or mycustomproperty. The properties change
depending on their class definition in the Active Directory schema. Refer to the
Active Directory Schema MMC to discover possible object types and definitions.
Listing 21.27: Updating Active Directory
// get the handle to MCBuser from Active Directory database
Dim
entry As New
DirectoryEntry("LDAP://DC=MyDC, O=MyOrg, OU=MyOU,
cn=MCBuser")
entry.Password = "mcb"// password
(entry.Properties("myprop")(0)) =
"myvalue" //
properties
entry.CommitChanges()
Conclusion
Hope this article would have helped you in understanding Working with
Directory Services in VB.NET.
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