IOException: 磁碟的空間不足。

StackTrace:
   於 System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   於 System.IO.FileStream.WriteCore(Byte[] buffer, Int32 offset, Int32 count)
   於 System.IO.FileStream.FlushWrite(Boolean calledFromFinalizer)
   於 System.IO.FileStream.Dispose(Boolean disposing)
   於 System.IO.FileStream.Finalize()