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Home/ Questions/Q 9102367
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Editorial Team
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Editorial Team
Asked: June 17, 20262026-06-17T01:22:04+00:00 2026-06-17T01:22:04+00:00

Using System.Threading.Tasks.Task.WaitAll() I could see the available parameters I should be using with this

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Using System.Threading.Tasks.Task.WaitAll() I could see the available parameters I should be using with this method

Can be seen here but when writing in visual studio, I was able to call the method with no parameters at all:

Task.WaitAll();

and it didn’t show up as a syntax error in the IDE (for missing parameters),
can you please explain why is this possible with this specific method?

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  1. Editorial Team
    Editorial Team
    2026-06-17T01:22:05+00:00Added an answer on June 17, 2026 at 1:22 am

    The full definition of this method is

    public static void WaitAll(params Task[] tasks)
    

    The word params indicates that the method accepts a variable number of arguments. 0 arguments is also explicitly allowed.

    Needless to say the method has no effect when called this way.

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