Is there any sample for parallel excel function execution

[RohitRKale]

Excel functions are executing sequentially and we have a case where user execute 50 excel function in sheet, ir is taking long time to execute. So looking for solution that all 50 function should execute parallel instead of sequentially.

[preyen]

You need to mark the functions used as Threadsafe which allows them to participate in Multithreaded recalculation

[ExcelFunction(Description = "My first .NET function",IsThreadSafe = true)]
public static string HelloDna(string name)
{
    return "Hello " + name;
}

See here:
https://excel-dna.net/docs/archive/wiki/ExcelFunction-and-other-attributes/#isthreadsafe