Listing All Users in AD C# & ASP.Net

In a previous Post I described the code to get all the users in User Information List using Client Object Model.


In this post I will demonstrate listing all the AD users using C#. You need to add references to System.DirectoryServices and System.DirectoryServices.AccountManagement for this purpose.

Check the example below:

public class Example
{

   public List<ADUsers> ListAllADUsers()
        {
             List<ADUsers> users = new List<ADUsers>() ;


             using (var ctx= new PrincipalContext(ContextType.Domain, "your domain name"))
             {
                 using (var PSearcher= new PrincipalSearcher(new UserPrincipal(ctx)))
                 {
                     foreach (var account in PSearcher.FindAll())
                     {

                         string Name = Convert.ToString(account.DisplayName);
                         string SAMAccountName = Convert.ToString(account.SamAccountName);
                         string EmailAddress = Convert.ToString(account.UserPrincipalName);
                         users.Add(new ADUsers() { Name = Name, SAMAccountName=                                                                                      SAMAccountName, Email = EmailAddress });
                     }
                 }
             }
            return users;
        }
}
 public class ADUsers
    {
      
        public string Name { get; set; }        
        public string SAMAccountName { get; set; } 
        public string Email { get; set; }

    }

The method ListAllADUsers() returns the list of all the users in AD with Full Name, Domain Name and Email Address for each user.