System.IO.IOException: The handle is invalid.

System.IO.IOException: The handle is invalid.
00022846 11:39:49.098 AM [892]
00022847 11:39:49.098 AM [892] at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
00022848 11:39:49.098 AM [892] at System.IO.__Error.WinIOError()
00022849 11:39:49.098 AM [892] at System.Threading.EventWaitHandle.Set()
00022850 11:39:49.098 AM [892] at System.IO.Ports.SerialStream.AsyncFSCallback(U

 

SteamWriter 对文件的写入操作时出现的问题。

 

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