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C# - Connection to Active Directory

How create a connection to AD?


  • Include in the References

  • Define the variables
    • server = company.se
    • container = DC=compan,DC=se
  • Create the connection
             PrincipalContext pc = new PrincipalContext(ContextType.Domain, server, container);

            DirectorySearcher directorySearcher = new DirectorySearcher(pc.ConnectedServer);
            directorySearcher.Filter = "(sAMAccountName=" + signum + ")";
            SearchResult results = directorySearcher.FindOne();

            DataTable dtDomain = new DataTable("DomainP");

  • Parse the result
if (results != null)
            {
                dtDomain.Columns.Add("displayname");
                dtDomain.Columns.Add("department");
                dtDomain.Columns.Add("company");
                dtDomain.Columns.Add("extensionattribute1");
                dtDomain.Columns.Add("mail");
                dtDomain.Columns.Add("employeeid");
                dtDomain.Columns.Add("manager");
                dtDomain.Columns.Add("cn");

                DataRow drUser = dtDomain.NewRow();
                if (results.Properties.Contains("displayname"))
                    drUser["displayname"] = results.Properties["displayname"][0].ToString();
                if (results.Properties.Contains("department"))
                    drUser["department"] = results.Properties["department"][0].ToString();
                if (results.Properties.Contains("company"))
                    drUser["company"] = results.Properties["company"][0].ToString();
                if (results.Properties.Contains("extensionattribute1"))
                    drUser["extensionattribute1"] = results.Properties["extensionattribute1"][0].ToString();
                if (results.Properties.Contains("mail"))
                    drUser["mail"] = results.Properties["mail"][0].ToString();
                if (results.Properties.Contains("employeeid"))
                    drUser["employeeid"] = results.Properties["employeeid"][0].ToString();
                if (results.Properties.Contains("manager"))
                    drUser["manager"] = results.Properties["manager"][0].ToString();
                if (results.Properties.Contains("cn"))
                    drUser["cn"] = results.Properties["cn"][0].ToString();

                dtDomain.Rows.Add(drUser);
            }

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