public async Task <IExamItem> StartItemAsync(ExamItemExecutionContext context, CancellationToken token, string ItemVoice = "", string ItemEndVoice = "")
{
try
{
//todo:如果
var examItem =
ExamItems.FirstOrDefault(x => x.ItemCode == context.ItemCode && x.State == ExamItemState.Progressing);
if (examItem != null)
{
if (!string.IsNullOrEmpty(ItemVoice))
{
examItem.VoiceFile = ItemVoice;
}
if (!string.IsNullOrEmpty(ItemEndVoice))
{
examItem.EndVoiceFile = ItemEndVoice;
}
return(examItem);
}
examItem = ProviderFactory.CreateExamItem(context.ItemCode, ItemVoice, ItemEndVoice);
if (examItem != null)
{
if (!string.IsNullOrEmpty(ItemVoice))
{
examItem.VoiceFile = ItemVoice;
}
if (!string.IsNullOrEmpty(ItemEndVoice))
{
examItem.EndVoiceFile = ItemEndVoice;
}
}
lock (ExamItems)
{
ExamItems.Add(examItem);
}
await examItem.StartAsync(context, token).ContinueWith((task) =>
{
if (task.Exception != null)
{
Logger.ErrorFormat("运行考试项目{0}发生异常，原因：{1}", context.ItemCode, task.Exception, task.Exception);
}
}, token);
return(examItem);
}
catch (Exception exp)
{
Logger.ErrorFormat("创建考试项目{0}发生异常，原因：{1}", context.ItemCode, exp, exp);
return(null);
}
}