列出域中所有用户的代码

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.DirectoryServices;

namespace WebAppLDAP
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            //ListAllUser();
             showUser();
         }
        protected void showUser()
        {
             DirectoryEntry entry = new DirectoryEntry("LDAP://ABC.COM.CN");
             System.DirectoryServices.DirectorySearcher mySearcher = new System.DirectoryServices.DirectorySearcher(entry);

             mySearcher.Filter = "(&(objectClass=user)(objectCategory=person))";

             mySearcher.PropertiesToLoad.Add("name"); //用户名
             mySearcher.PropertiesToLoad.Add("samaccountname"); //用户帐号

             SearchResultCollection resultCol = mySearcher.FindAll();

            foreach (SearchResult result in resultCol)
            {
                 ResultPropertyCollection props = result.Properties;

                foreach (string propName in props.PropertyNames)
                {
                    //Response.Write(props[propName][0] + "<BR>");
                    if (propName == "name")
                    {
                         Response.Write(props[propName][0] + "<BR>");
                     }
                    if (propName == "samaccountname")
                    {
                         Response.Write(props[propName][0] + "<BR><BR>");
                     }
                 }
             }
         }
     }
}