Silverlight DomainService ADHelper 查找用户信息

namespace SBTOSNew.Web.ADDomainService
{
    using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.ComponentModel.DataAnnotations;
    using System.Linq;
    using System.ServiceModel.DomainServices.Hosting;
    using System.ServiceModel.DomainServices.Server;
    using System.DirectoryServices;
    using System.Text;
    using System.Security.Principal;


    // TODO: Create methods containing your application logic.
    [EnableClientAccess()]
    public class ADHelper : DomainService
    {
        public string GetUserInfo(string ADPath, string ADUser, string ADPassword, string CurrentUserName)
        {

            DirectoryEntry objDirEnt = GetUser(ADPath, ADUser, ADPassword, CurrentUserName);
            StringBuilder sbUserInfo = new StringBuilder();
            if (objDirEnt != null)
            {
                sbUserInfo.Append("Name = " + objDirEnt.Name + Environment.NewLine);
                sbUserInfo.Append("Path = " + objDirEnt.Path + Environment.NewLine);
                sbUserInfo.Append("SchemaClassName = " + objDirEnt.SchemaClassName + Environment.NewLine);
                sbUserInfo.AppendFormat("\t{0} = ", "memberOf");
                sbUserInfo.Append(Environment.NewLine);
                foreach (var objValue in objDirEnt.Properties["memberOf"])
                {
                    sbUserInfo.AppendFormat("\t\t{0}" + Environment.NewLine,GetGroupName(objValue.ToString()));
                }
            }
            return sbUserInfo.ToString();
        }

        private DirectoryEntry GetUser(string ADPath, string ADUser, string ADPassword, string CurrentUserName)
        {
            DirectoryEntry de = GetDirectoryObject(ADPath, ADUser, ADPassword);
            DirectorySearcher deSearch = new DirectorySearcher();
            deSearch.SearchRoot = de;
            deSearch.Filter = "(&(objectClass=user)(objectCategory=person)(sAMAccountName=" + CurrentUserName + "))";
            deSearch.SearchScope = SearchScope.Subtree;
            SearchResult results = deSearch.FindOne();
            if (results != null)
            {
                de = new DirectoryEntry(results.Path, ADUser, ADPassword, AuthenticationTypes.Secure);
                return de;
            }
            else
            {
                return null;
            }
        }

        private DirectoryEntry GetDirectoryObject(string ADPath, string ADUser, string ADPassword)
        {
            DirectoryEntry oDE;
            oDE = new DirectoryEntry(ADPath, ADUser, ADPassword, AuthenticationTypes.Secure);
            return oDE;
        }

        private string GetGroupName(string objValue)
        {
            string groupName = "";
            if (objValue == null || objValue.Trim() == "")
            {
                groupName = "";
            }
            else
            {
                string[] groupInfo = objValue.Split(new char[] { ',' });
                foreach (string item in groupInfo)
                {
                    if (item.StartsWith("CN="))
                    {
                        groupName = item.Substring(3);
                    }
                }
            }
            return groupName;
        }

        public string GetSystemUserInfo(string ADUser, string ADPassword)
        {
            GenericIdentity currentIdentity = GetGenericIdentity();
            string identityName = currentIdentity.Name;
            string identityAuthenticationType = currentIdentity.AuthenticationType;
            string[] userinfo = identityName.Split(new char[] { '\\' });

            string ADPath = @"LDAP://" + userinfo[0];
            string CurrentUserName = userinfo[1];

            DirectoryEntry objDirEnt = GetUser(ADPath, ADUser, ADPassword, CurrentUserName);
            StringBuilder sbUserInfo = new StringBuilder();
            if (objDirEnt != null)
            {
                sbUserInfo.Append("Name = " + objDirEnt.Name + Environment.NewLine);
                sbUserInfo.Append("Path = " + objDirEnt.Path + Environment.NewLine);
                sbUserInfo.Append("SchemaClassName = " + objDirEnt.SchemaClassName + Environment.NewLine);
                sbUserInfo.AppendFormat("\t{0} = ", "memberOf");
                sbUserInfo.Append(Environment.NewLine);
                foreach (var objValue in objDirEnt.Properties["memberOf"])
                {
                    sbUserInfo.AppendFormat("\t\t{0}" + Environment.NewLine, GetGroupName(objValue.ToString()));
                }
            }
            return sbUserInfo.ToString();
        }

        private GenericIdentity GetGenericIdentity()
        {
            WindowsIdentity windowsIdentity = WindowsIdentity.GetCurrent();
            string authenticationType = windowsIdentity.AuthenticationType;
            string userName = windowsIdentity.Name;
            GenericIdentity authenticatedGenericIdentity =
                new GenericIdentity(userName, authenticationType);

            return authenticatedGenericIdentity;
        }
    }
}

使用:

string ADUser = txtUser.Text.Trim();
            string ADPassword = txtPW.Password.Trim();
            string ADPath = @"LDAP://" + txtDomain.Text.Trim();
            string CurrentUserName = txtCurrentUser.Text.Trim();
            InvokeOperation<string> getUserInfo = adHelper.GetUserInfo(ADPath, ADUser, ADPassword, CurrentUserName);
            getUserInfo.Completed += new EventHandler(getUserInfo_Completed);