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ActiveDirectory DirectorySearcher: Check if user is member of a group


ActiveDirectory DirectorySearcher: Check if user is member of a group

By : Raj
Date : October 28 2020, 08:00 PM
This might help you Use the System.DirectoryServices.AccountManagement namespace added in .Net 3.5 if it's available. Here's an example for group checking:
code :


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Authentication accessing ActiveDirectory with DirectorySearcher

Authentication accessing ActiveDirectory with DirectorySearcher


By : Christopher Bishop
Date : March 29 2020, 07:55 AM
it should still fix some issue See the "Authenticating to your Directory" section from this article on MSDN. The gist of it is you connect to your ldap root with DirectoryEntry (That takes credentials in the constructor) and then use a DirectorySearcher on it.
How to get groups a group is member of in ActiveDirectory using C#?

How to get groups a group is member of in ActiveDirectory using C#?


By : Lokesh
Date : March 29 2020, 07:55 AM
wish help you to fix your issue Think I've got it on my own:
To get all groups a group is member of you can use
code :
directoryEntry.Properties["memberOf"][0]
Ask ActiveDirectory if a machine is a member of a group

Ask ActiveDirectory if a machine is a member of a group


By : Pankaj Bharambe
Date : March 29 2020, 07:55 AM
With these it helps Here's an example method using the System.DirectoryServices namespace:
code :
public bool BelongsToGroup(string computerName, string groupName, string domain)
{
   PrincipalContext domainContext = new PrincipalContext(ContextType.Domain, domain);

   ComputerPrincipal computer = ComputerPrincipal.FindByIdentity(domainContext, computerName);

   foreach (Principal result in computer.GetGroups())
   {
      if (result.Name == groupName)
      {
         return true;
      }
   }

  return false;
}
string computerName = Environment.MachineName;
string groupName = "Group Name";
string domainName = "Domain Name";
bool test = BelongsToGroup(computerName, groupName, domainName);
ActiveDirectory DirectorySearcher: why is FindOne() slower than FindAll() and why are properties omitted?

ActiveDirectory DirectorySearcher: why is FindOne() slower than FindAll() and why are properties omitted?


By : AprilDevelop
Date : March 29 2020, 07:55 AM
around this issue New answer for the new stuff. Your first method was using the Global Catalog, so it was like using
code :
private static DirectoryEntry GetEntry3()
{
    return new DirectoryEntry(@"GC://SERVERNAME/OU=MyUnit,DC=SERVERNAME,DC=local", "USERNAME", "PASSWORD");
}
How to check if a user is a member of the Administrator's group by user name/domain

How to check if a user is a member of the Administrator's group by user name/domain


By : Akhtar Raza
Date : March 29 2020, 07:55 AM
may help you . If "almost always right" is good enough, you'll need to recursively enumerate the user's group memberships to see whether or not you find the Administrators group. This isn't trivial, but it's not unreasonably difficult. There is no built-in library to do it for you.
The first catch is that this assumes you have sufficient access to the Active Directory to read all of the relevant groups. By default, the local system account will be able to do this, but you would need to prohibit the system administrator from changing the security permissions on the groups in such a way that domain computers can't read group memberships.
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