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Editorial Team
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Asked: 2026-06-17T11:23:10+00:00

I have a MT app that downloads content form the internet (ex – lots

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I have a MT app that downloads content form the internet (ex – lots of images – 10K to 5MB). One download session can represent gigabytes of data. I have wrapped the download in a Parallel.ForEach loop and that works, but doesn’t seem to use any more then one thread on the device for downloading (I would like at least two to reduce the download time).

Note: Parallel.ForEach does create multiple threads in the simulator. Should I just throw all the downloads as tasks into the thread pool? Should I spin up my own queue and threads and bypass the threadpool? I know the threadpool scales to match the device, so that might not be the best option.

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1 Answer

  1. Editorial Team

    When it comes to IO, only the application developer knows how much parallelism he wants. Don’t rely on the TPL for that – it knows nothing about IO.

    Create the right amount of IO parallelism yourself by starting the correct number of tasks manually, using PLINQ with an exact degree of parallelism or using async IO (which is thread-less).

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