我正在使用TPL Dataflow库中的TransformBlock,但是我发现在转换过程中如果出现异常,在“Receive”方法中会收到一个通用的异常,但没有提及原始异常。
在这段代码中:
没有提及原始异常类型或其消息。是否有一种方法可以强制它抛出原始异常?或者至少将其用作内部异常?
在这段代码中:
Func<Int32, Task<String>> transformer = async i => { await Task.Yield(); throw new ArgumentException("whatever error"); };
TransformBlock<Int32, String> transform = new TransformBlock<int, string>(transformer);
transform.Post(1);
try
{
var x = await transform.ReceiveAsync();
}
catch (Exception ex)
{
// catch
}
异常ex
包含:
System.InvalidOperationException was caught
HResult=-2146233079
Message=The source completed without providing data to receive.
Source=System.Threading.Tasks.Dataflow
StackTrace:
at System.Threading.Tasks.Dataflow.Internal.Common.InitializeStackTrace(Exception exception)
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at DoubleQueueTest.Program.<testwhatever>d__5.MoveNext() in c:\Users\vtortola\Documents\Visual Studio 2013\Projects\DoubleQueueTest\DoubleQueueTest\Program.cs:line 43
InnerException:
没有提及原始异常类型或其消息。是否有一种方法可以强制它抛出原始异常?或者至少将其用作内部异常?