How to acess ldap active directory external attributes

Hi Kavya M,

To read the value of external attributes(all attributes) from ldap in c#:

string currentUserSid = WindowsIdentity.GetCurrent().User.Value;

PrincipalContext ctx = new PrincipalContext(ContextType.Domain, "helpdesk.wat.edu");

UserPrincipal up = UserPrincipal.FindByIdentity(ctx, IdentityType.Sid, currentUserSid);

DirectoryEntry entry = up.GetUnderlyingObject() as DirectoryEntry;
PropertyCollection props = entry.Properties;

foreach (string propName in props.PropertyNames)
{
    if (entry.Properties[propName].Value != null)
    {
        Console.WriteLine(propName + " = " + entry.Properties[propName].Value.ToString());
    }
    else
    {
        Console.WriteLine(propName + " = NULL");
    }
}

Console.ReadKey();

For more details:

• LDAP - Retrieve a list of all attributes/values?
  • https://stackoverflow.com/questions/6674203/ldap-retrieve-a-list-of-all-attributes-values

Hope this will help you!

https://www.codemag.com/article/1312041/Using-Active-Directory-in-.NET

https://support.zpesystems.com/portal/en/kb/articles/how-to-configure-active-directory-or-ldap-authentication-provider

https://decovar.dev/blog/2022/06/16/dotnet-ldap-authentication/