Create Active directory User in Dynamics CRM using c#

Add following assemblies in your project:

using System.DirectoryServices;
using System.DirectoryServices.AccountManagement;

        private void GetADUsers()
        {
            DataTable dt = new DataTable();
            dt.Columns.AddRange(new DataColumn[2]  
            {  
                new DataColumn("AccountName", typeof (string)),  
                    new DataColumn("GivenName", typeof (string))  
            });

            var context = new PrincipalContext(ContextType.Domain, "domainname");
            var usr = new UserPrincipal(context);
            var filter = new Filters(usr);
            filter.CreatedAfter(DateTime.UtcNow.AddDays(-50));//get last 50 days created users
            foreach (var result in new PrincipalSearcher(usr).FindAll())
            {
                DirectoryEntry de = result.GetUnderlyingObject() as DirectoryEntry;
                var clsuser = new ClsUsers();
                dt.Rows.Add(Convert.ToString(de.Properties["samAccountName"].Value), Convert.ToString(de.Properties["givenName"].Value));
                createuser(Convert.ToString(de.Properties["samAccountName"].Value), Convert.ToString(de.Properties["givenName"].Value));//create user in crm
                break;
            }
            
            GridView1.DataSource = dt;
            GridView1.DataBind();        
        }

 

protected void createuser(String username, String fullname)
        {
            String dom = @"UMT\";
            IOrganizationService service  = GetCRMService();
            Entity user = new Entity("systemuser");
            user["domainname"] = dom + username;
            user["firstname"] = "A";
            user["lastname"] = fullname;
            user["businessunitid"] = new EntityReference("businessunit", new Guid(""));
            service.Create(user);
        }

 

public class Filters : AdvancedFilters// this class is used for to apply filters
    {
        public Filters(Principal p)
            : base(p)
        {
        }
        public void CreatedAfter(DateTime value)
        {
            var strValue = value.ToString("yyyyMMddHHmmss.0Z");
            this.AdvancedFilterSet("WhenCreated", strValue, typeof(string), MatchType.GreaterThanOrEquals);
        }
    }

    public class ClsUsers
    {
        public string AccountName { get; set; }
        public string DisplayName { get; set; }
    }