"对COM 组件的调用返回了错误HRESULT E_FAIL"，在枚举OPC服务器时候出现这个错误提示

            //获取本地计算机IP,计算机名称

            IPHostEntry IPHost = Dns.Resolve(Environment.MachineName);

            if (IPHost.AddressList.Length > 0)

            {

                strHostIP = IPHost.AddressList[0].ToString();

            }

            else

            {

                return;

            }

            //通过IP来获取计算机名称，可用在局域网内

            IPHostEntry ipHostEntry = Dns.GetHostByAddress(strHostIP);

            strHostName=ipHostEntry.HostName.ToString();



            //获取本地计算机上的OPCServerName

            try

            {

                KepServer = new OPCServer();

                object serverList = KepServer.GetOPCServers(strHostName);



                foreach (string turn in (Array)serverList)

                {

                    cmbServerName.Items.Add(turn);

                }



                cmbServerName.SelectedIndex = 0;

                btnConnServer.Enabled = true;

            }

            catch(Exception err)

            {

                MessageBox.Show("枚举本地OPC服务器出错："+err.Message,"提示信息",MessageBoxButtons.OK,MessageBoxIcon.Warning);

            }