Perform an operation on same thread within a Parallel Execution

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C#

.NET

threads

TPL

.NET4.5

I have a requirement, such that I need to do some synchronous processing within a parallel execution flow.

I have some tasks working within a Parallel foreach. Now what I need to do is that, in between do some database updates. Which I do not want to be done using async and await, since this would invoke multiple threads and loading my server.

Since these database updates are important for me, but I do not want them to block my main flow of execution. What I want to achieve is that the database updates should always be done on the same thread synchronously, which would fasten the main flow.

Is this possible while I use a Task? If so, can anyone please suggest on the same.