Server_Name   :servername.cloudapp.net  
IP_Address    : x.x.x.x  
Protocol_Type : Recursive LDAP  
LDAP_Port     : 389  
User_OU       : xxx.xxx.world.local/city/city Projects/city Worksheet/CityUsers  
Domain        : xxx.xxx.world.local  
Service_Account : city\serviceaccountname  
Svc_Credentials : serviceaccountpwd

Using the above details i tried to connect to active directory service account using ldap, but i am not able to connectand authenticate user credentials entered.

应用程序包含一个登录屏幕,用户可以在其中输入他/她的用户名和密码,提供的用户名和密码应在活动目录中进行身份验证 .

请帮帮我 make connection to the active directory service account and authenticate the user credentials entered.

请在下面找到用于身份验证的代码:

public void Autherize(User user)  
    {  
        DirectoryEntry de = new DirectoryEntry("LDAP://IP_Address:LDAP Port/OU=CityUsers,OU=city Worksheet,OU=city Projects,OU=city,DC=xxx,DC=xxx,DC=world,DC=local", "city\serviceaccountname", "serviceaccountpwd");  
        DirectorySearcher ds = new DirectorySearcher(de);  
        try  
        {  
          SearchResult result = ds.FindOne();  
          if (result != null)  
          {  
            foreach (string propName in result.Properties.PropertyNames)  
            {  
              foreach (object myCollection in result.Properties[propName])  
              {  
                Debug.WriteLine(propName + " : " + myCollection.ToString());  
              }  
            }  
           }  
           else  
               Debug.WriteLine("Error: Not found");  
        }  
        catch (Exception f)  
        {  
           Debug.WriteLine("Error:" + f.Message);  
        }  
   }