C＃嘗試獲取用戶列表時的LDAP訪問衝突

Question

好吧，我已經連接到AD服務器，並創建了用戶，沒有任何問題。但是，當我嘗試獲取用戶列表時，它總是失敗。

我可以使用LDAP：//domain.com，「user」，「password」進行連接，但當我嘗試其他任何操作時，會出現訪問衝突。 EX：LDAP：// CN = Users，DC = domain，DC = com或LDAP：//domain.com/CN=Users,DC=domain,DC=com返回訪問衝突異常。如果我通過根進行搜索並獲取路徑，並使用路徑創建新條目，則會出現訪問衝突。

看來我只能連接到根。我不知道如何從那裏獲取用戶列表。誰能幫忙？

編輯： 這是我最終合作的代碼。它以我想要的方式工作。如果有人遇到這個問題，我會把它留在這裏。我在代碼中添加了對錯誤彈出的註釋。

private void List_Logon() 
     { 
      DirectoryEntry Entry = new DirectoryEntry("LDAP://domain.com", "user", "password", AuthenticationTypes.Secure); 
      DirectorySearcher searcher = new DirectorySearcher(Entry); 
      searcher.Filter = "(&(objectCategory=person)(objectClass=user))"; 
      SearchResultCollection results = searcher.FindAll(); 
      //I had to add null checks. This was never a problem, but should be checked. 
      if (results != null) 
      { 
       //For some odd reason, I couldn't use a foreach here. 
       for (int i = 0; i < results.Count; i++) 
       { 
        try 
        { 
         DirectoryEntry user = results[i].GetDirectoryEntry(); 
         //This information cannot return null or it will throw an Access Violation Exception. 
         if (user.Properties["Name"].Value != null & user.Properties["lastLogon"].Value != null) 
         { 
          //This part is not mine. Someone else told me how to convert it. 
          Int64 lastlogon = new Int64(); 
          IADsLargeInteger lgInt = 
          (IADsLargeInteger)user.Properties["lastLogon"].Value; 
          lastlogon = ((long)lgInt.HighPart << 32) + lgInt.LowPart; 
          DateTime lastLogonTime = DateTime.FromFileTime(lastlogon); 
          //Thank you. 
          listBox1.Items.Add(user.Properties["Name"].Value.ToString() + " : " + lastLogonTime.ToString()); 
         } 
         //If one of the above is null, I still want to try to get the user. 
         else if (user.Properties["Name"].Value != null) 
         { 
          listBox1.Items.Add(user.Properties["Name"].Value.ToString()); 
         } 
         else 
         { 
          //Don't believe this will ever happen, but it's possible... I think. I'm still learning. 
          listBox1.Items.Add("result was null"); 
         } 
        } 
        catch (Exception e) 
        { 
         //This is how I found out what was really wrong. Catching the Access Violation Exception did not work. This was returning a Null Reference message. 
         MessageBox.Show(e.Message(), "Error"); 
        } 
       } 
      } 
     } 

Answer 1

訪問衝突異常不正確。我添加了一個try-catch來發現問題是一個空引用異常。