错误连接到Active Directory

Question

我试图连接到Active Directory来获取当前用户的名称，但我得到一个错误，而不是：

服务器无法联系。

代码：

var identityName = HttpContext.Current.User.Identity.Name; 

using (HostingEnvironment.Impersonate()) 
{ 
    using (var context = new PrincipalContext(ContextType.Domain, "\\MyDomain.local", null, ContextOptions.Negotiate | ContextOptions.SecureSocketLayer)) 
    using (userPrincipal = UserPrincipal.FindByIdentity(context, IdentityType.SamAccountName, identityName)) 
    { 
     lblUserName.Text = userPrincipal.DisplayName; 
    } 
} 

Answer 1

  System.Security.Principal.WindowsIdentity wi = System.Security.Principal.WindowsIdentity.GetCurrent(); 
     string[] a = Context.User.Identity.Name.Split('\\'); 


     System.DirectoryServices.DirectoryEntry ADEntry = new System.DirectoryServices.DirectoryEntry("WinNT://" + a[0] + "/" + a[1]); 
     lblUserName.Text = ADEntry.Properties["FullName"].Value.ToString();