// 第二阶段：填充图书信息的 PII 和 Title 字段
void FillBookFields()
{
#if NO
RfidChannel channel = RFID.StartRfidChannel(App.RfidUrl,
out string strError);
if (channel == null)
{
throw new Exception(strError);
}
#endif
try
{
foreach (Entity entity in _entities)
{
if (_cancelRefresh == null ||
_cancelRefresh.IsCancellationRequested)
{
return;
}
if (entity.FillFinished == true)
{
continue;
}
//if (string.IsNullOrEmpty(entity.Error) == false)
// continue;
// 获得 PII
// 注：如果 PII 为空，文字重要填入 "(空)"
if (string.IsNullOrEmpty(entity.PII))
{
// var result = channel.Object.GetTagInfo("*", entity.UID);
var result = GetTagInfo(_rfidChannel, entity.UID);
if (result.Value == -1)
{
entity.SetError(result.ErrorInfo);
continue;
}
Debug.Assert(result.TagInfo != null);
entity.TagInfo = result.TagInfo;
LogicChip chip = LogicChip.From(result.TagInfo.Bytes,
(int)result.TagInfo.BlockSize,
"" // tag.TagInfo.LockStatus
);
string pii = chip.FindElement(ElementOID.PII)?.Text;
entity.PII = GetCaption(pii);
}
// 获得 Title
// 注：如果 Title 为空，文字中要填入 "(空)"
if (string.IsNullOrEmpty(entity.Title) &&
string.IsNullOrEmpty(entity.PII) == false && entity.PII != "(空)")
{
var result = GetEntityData(entity.PII,
out string title,
out string item_xml,
out string item_recpath);
if (result.Value == -1)
{
entity.SetError(result.ErrorInfo);
continue;
}
entity.Title = GetCaption(title);
// entity.ItemXml = item_xml;
entity.SetData(item_recpath, item_xml);
}
entity.SetError(null);
entity.FillFinished = true;
}
booksControl.SetBorrowable();
}
catch (Exception ex)
{
#if NO
this.error.Text = ex.Message;
this.error.Visibility = Visibility.Visible;
#endif
this.Error = ex.Message;
}
finally
{
#if NO
RFID.EndRfidChannel(channel);
#endif
}
}
// EventProxy eventProxy;
private void PageBorrow_Loaded(object sender, RoutedEventArgs e)
{
// throw new Exception("test");
_layer = AdornerLayer.GetAdornerLayer(this.mainGrid);
_adorner = new LayoutAdorner(this);
// 准备指纹通道
List <string> errors = new List <string>();
if (string.IsNullOrEmpty(App.FingerprintUrl) == false)
{
#if NO
eventProxy = new EventProxy();
eventProxy.MessageArrived +=
new MessageArrivedEvent(eventProxy_MessageArrived);
#endif
_fingerprintChannel = FingerPrint.StartFingerprintChannel(
App.FingerprintUrl,
out string strError);
if (_fingerprintChannel == null)
{
errors.Add($"启动指纹通道时出错: {strError}");
}
// https://stackoverflow.com/questions/7608826/how-to-remote-events-in-net-remoting
#if NO
_fingerprintChannel.Object.MessageArrived +=
new MessageArrivedEvent(eventProxy.LocallyHandleMessageArrived);
#endif
try
{
_fingerprintChannel.Object.GetMessage("clear");
_fingerprintChannel.Started = true;
}
catch (Exception ex)
{
if (ex is RemotingException && (uint)ex.HResult == 0x8013150b)
{
errors.Add($"启动指纹通道时出错: “指纹中心”({App.FingerprintUrl})没有响应");
}
else
{
errors.Add($"启动指纹通道时出错(2): {ex.Message}");
}
}
}
// 准备 RFID 通道
if (string.IsNullOrEmpty(App.RfidUrl) == false)
{
_rfidChannel = RFID.StartRfidChannel(
App.RfidUrl,
out string strError);
if (_rfidChannel == null)
{
errors.Add($"启动 RFID 通道时出错: {strError}");
}
try
{
var result = _rfidChannel.Object.ListReaders();
// TODO: 某处界面可以显示当前连接的读卡器名字
// 看看是否有至少一个读卡器
if (result.Readers.Length == 0)
{
errors.Add("当前指纹中心没有任何连接的读卡器。请检查读卡器是否正确连接");
}
else
{
_rfidChannel.Started = true;
}
}
catch (Exception ex)
{
if (ex is RemotingException && (uint)ex.HResult == 0x8013150b)
{
errors.Add($"启动 RFID 通道时出错: “RFID-中心”({App.RfidUrl})没有响应");
}
else
{
errors.Add($"启动 RFID 通道时出错: {ex.Message}");
}
}
}
else
{
errors.Add($"尚未配置 RFID 接口 URL");
}
if (errors.Count > 0)
{
this.Error = StringUtil.MakePathList(errors, "; ");
}
// https://stackoverflow.com/questions/13396582/wpf-user-control-throws-design-time-exception
if (!System.ComponentModel.DesignerProperties.GetIsInDesignMode(this))
{
_timer = new System.Threading.Timer(
new System.Threading.TimerCallback(timerCallback),
null,
TimeSpan.FromSeconds(0),
TimeSpan.FromSeconds(1));
}
}
