使用Unity访问Active Directory

Question

我正在尝试访问Active Directory，可以使用以下基本相同的代码在Visual Studio中成功完成此操作。但是，在使用Unity时，此行代码出现错误：“ DirectoryEntry ldapConnection = new DirectoryEntry（” xxxxxxx“）;”

字符串用户名=“ xxxxx xxxxxxx”;

        try
        {
            DirectoryEntry myLdapConnection = createDirectoryEntry();

            DirectorySearcher search = new DirectorySearcher(myLdapConnection);
            search.Filter = "(cn=" + username + ")";

            SearchResult result = search.FindOne();

            if (result != null)
            {
                print("user found");
            }
            else
            {
                print("user not found");
            }
        }

        catch (Exception e)
        {

            print("Exception caught:" + e.ToString());
        }
    }

    static DirectoryEntry createDirectoryEntry()
    {
        DirectoryEntry ldapConnection = new DirectoryEntry("xxxxxxx");
        ldapConnection.Path = "LDAP://OU=xxxxxx,DC=xxxxxx,DC=xxxxx,DC=xxxxx";
        ldapConnection.AuthenticationType = AuthenticationTypes.Secure;
        return ldapConnection;
    }

错误是：“ System.DirectoryServices.DirectoryEntry：.cctor（）中的无效IL代码：方法主体为空。”

任何对此原因或可能的解决方案的帮助将不胜感激。