日期:2014-05-17  浏览次数:21200 次

"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)