void onEventArrived(object sender, EventArrivedEventArgs e)
{
ManagementBaseObject _o = e.NewEvent["TargetInstance"] as ManagementBaseObject;
if (_o != null)
{
using (ManagementObject mo = new ManagementObject(_o["Dependent"].ToString()))
{
if (mo != null)
{
try
{
if (mo.GetPropertyValue("DeviceID").ToString() != string.Empty)
{
//connected
_action?.Invoke("connected");
}
}
catch (ManagementException ex)
{
//disconnected
_action?.Invoke("disconnected");
}
}
}
}
}
// Exception:
// 可能会抛出 Exception 异常
public BaseChannel <T> GetChannel()
{
// TODO: 这里需要一个特殊的异常类型
if (string.IsNullOrEmpty(this.Url))
{
throw new UrlEmptyException($"尚未配置 {this.Name} URL");
}
return(this.Channels.GetChannel(() =>
{
#if LOG
LibraryChannelManager.Log?.Debug($"beginof new {this.Name} channel, Url={this.Url}");
#endif
var channel = StartChannel(
this.Url,
out string strError);
if (channel == null)
{
throw new Exception(strError);
}
try
{
#if NO
var result = channel.Object.GetState("");
if (result.Value == -1)
{
throw new Exception($"RFID 中心当前处于 {result.ErrorCode} 状态({result.ErrorInfo})");
}
channel.Started = true;
channel.Object.EnableSendKey(false);
#endif
_new_action?.Invoke(channel);
}
catch (Exception ex)
{
if (ex is RemotingException && (uint)ex.HResult == 0x8013150b)
{
throw new NotResponseException($"启动 {this.Name} 通道时出错: “{this.Name}”({this.Url})没有响应", ex);
}
else
{
throw new Exception($"启动 {this.Name} 通道时出错(2): {ex.Message}", ex);
}
}
#if LOG
LibraryChannelManager.Log?.Debug($"endof new {this.Name} channel, Url={this.Url}");
#endif
return channel;
}));
}