when exactly do we need params keyword over List?

Question

why do we need params keyword in C#?

Sachin Singh · Accepted Answer

Yes, when you don't know how many parameters are going to be there in your method , then you can use both Params and List, but params gives you one advantage that now you can paas comma separated values that you can not do with List, also you do not need to unncessarily create list.

public int Add(params int[] ListNumbers)
{
int total = 0;
// foreach loop
foreach(int i in ListNumbers)
{
total += i;
}
return total;
}
//
int sum=Add(1,2,3);
int sum2= Add(1,2,3,4);