How to interrupt delegate in C#

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C#

my codes as follows:

public delegate int DelegateFun(int a,int b);
DelegateFun dl = DataProcess;//DataProcess is a data procss function,and there is a block function in it
int a = 3;
int b= 4;
dl.BeginInvoke(a,b,null,null);

then,how i force to interrupt the DataProcess's running beforce it finish?

do i force to interrupt it as Thread using Thread.Abort?

What I have tried:

i look for solutions in network,someone said delegate function run in threadpool,so we don't control it.