PrincipalSearcher 和 DirectorySearcher 的区别

DirectorySearcher 可以比 PrincipalSearcher 快得多.

DirectorySearcher can be significantly faster than PrincipalSearcher if you make use of PropertiesToLoad.

DirectorySearcher 和类似的类可以处理 AD 中的所有对象，而 PrincipalSearcher 的限制要大得多.例如，您不能使用 PrincipalSearcher 和类似的类来修改组织单位.

DirectorySearcher and like classes can work with all objects in AD, whereas PrincipalSearcher is much more limited. For example, you can not modify an Organizational Unit using PrincipalSearcher and like classes.

这是我使用 PrincipalSearcher、DirectorySearcher 而不使用 PropertiesToLoad 和 DirectorySearcher 来分析的图表使用 PropertiesToLoad.所有测试...

Here is a chart I made to analyze using PrincipalSearcher, DirectorySearcher without using PropertiesToLoad, and DirectorySearcher with using PropertiesToLoad. All tests...

• 使用 1000
的 PageSize
• 一共查询了4278个用户对象
• 指定以下条件
  • objectClass=user
  • objectCategory=person
  • 不是调度资源(即 !msExchResourceMetaData=ResourceType:Room)
  • 已启用(即 !userAccountControl:1.2.840.113556.1.4.803:=2)

  
  

  使用PrincipalSearcher

  [DirectoryRdnPrefix("CN")]
  [DirectoryObjectClass("Person")]
  public class UserPrincipalEx: UserPrincipal
  {
  
      private AdvancedFiltersEx _advancedFilters;
  
      public UserPrincipalEx( PrincipalContext context ): base(context)
      {
          this.ExtensionSet("objectCategory","User");
      }
  
      public new AdvancedFiltersEx AdvancedSearchFilter
      {
          get {
              if( null == _advancedFilters )
                  _advancedFilters = new AdvancedFiltersEx(this);
                  return _advancedFilters;
          }
      }
  
  }
  
  public class AdvancedFiltersEx: AdvancedFilters 
  {
  
      public AdvancedFiltersEx( Principal principal ): 
          base(principal) { }
  
      public void Person()
      {
          this.AdvancedFilterSet("objectCategory", "person", typeof(string), MatchType.Equals);
          this.AdvancedFilterSet("msExchResourceMetaData", "ResourceType:Room", typeof(string), MatchType.NotEquals);
      }
  }
  
  //...
  
  for( int i = 0; i < 10; i++ )
  {
      uint count = 0;
      Stopwatch timer = Stopwatch.StartNew();
      PrincipalContext context = new PrincipalContext(ContextType.Domain);
      UserPrincipalEx filter = new UserPrincipalEx(context);
      filter.Enabled = true;
      filter.AdvancedSearchFilter.Person();
      PrincipalSearcher search = new PrincipalSearcher(filter);
      DirectorySearcher ds = search.GetUnderlyingSearcher() as DirectorySearcher;
      if( ds != null )
          ds.PageSize = 1000;
      foreach( UserPrincipalEx result in search.FindAll() )
      {
          string canonicalName = result.CanonicalName;
          count++;
      }
  
      timer.Stop();
      Console.WriteLine("{0}, {1} ms", count, timer.ElapsedMilliseconds);
  }
  

  
  

  使用DirectorySearcher

  for( int i = 0; i < 10; i++ )
  {
      uint count = 0;
      string queryString = "(&(objectClass=user)(objectCategory=person)(!msExchResourceMetaData=ResourceType:Room)(!userAccountControl:1.2.840.113556.1.4.803:=2))";
  
      Stopwatch timer = Stopwatch.StartNew();
  
      DirectoryEntry entry = new DirectoryEntry();
      DirectorySearcher search = new DirectorySearcher(entry,queryString);
      search.PageSize = 1000;
      foreach( SearchResult result in search.FindAll() )
      {
          DirectoryEntry user = result.GetDirectoryEntry();
          if( user != null )
          {
              user.RefreshCache(new string[]{"canonicalName"});
              string canonicalName = user.Properties["canonicalName"].Value.ToString();
              count++;
          }
      }
      timer.Stop();
      Console.WriteLine("{0}, {1} ms", count, timer.ElapsedMilliseconds);
  }
  

  
  

  使用 DirectorySearcher 和 PropertiesToLoad

  Using DirectorySearcher with PropertiesToLoad

  与使用DirectorySearcher"相同，但添加这一行

  Same as "Using DirectorySearcher but add this line

  search.PropertiesToLoad.AddRange(new string[] { "canonicalName" });
  

  之后

  search.PageSize = 1000;
  

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