void Button1Click(object sender, EventArgs e)
        {
            ManagementObjectSearcher mos=new ManagementObjectSearcher("select * from win32_logicaldisk");
            mos.Scope.Options.Username="xpclient";
            mos.Scope.Options.Password="MZD";
            mos.Scope.Path.Server="192.168.1.15";

                        //调用这个无惨的Get方法可以

            foreach(ManagementObject mo in mos.Get())
            {
                MessageBox.Show(mo["name"].ToString());
            }
            

                        //下面这种方法居然就拒绝访问了

            ManagementOperationObserver moo=new ManagementOperationObserver();
            moo.ObjectReady+= delegate(object ssender, ObjectReadyEventArgs se)
            {
                MessageBox.Show(se.NewObject["name"].ToString());
            };
                        //在Get方法这里抛出异常，拒绝访问，是异步调用的原因吗？
            mos.Get(moo);


                        //如果是本机计算机，两种方式都成功了
        }

ConnectionOptions. connection_wmi = new ConnectionOptions();
connection_wmi.Username = "";
connection_wmi.Password = "";
connection_wmi.Authority = "ntlmdomain:DOMAIN";

------解决方案--------------------

打错了，纠正一下：
C# code
ConnectionOptions connection_wmi = new ConnectionOptions();
connection_wmi.Username = "";
connection_wmi.Password = "";
connection_wmi.Authority = "ntlmdomain:DOMAIN";

------解决方案--------------------

moo是否也应该有：
moo.Scope.Options.Username="xpclient";
moo.Scope.Options.Password="MZD";
moo.Scope.Path.Server="192.168.1.15";

另外：connection_wmi.Authority = "ntlmdomain:DOMAIN";
在NT系统下是需要的。

------解决方案--------------------

探讨

不是你这个问题，你这样解决不了问题 
connection_wmi.Authority = "ntlmdomain:DOMAIN";有没有这句是一样的 
我知道你是在网上找的这句，这是以讹传讹，解决不了问题


------解决方案--------------------

mark