How to pass an array and a single element to a multiple argument method?

Question

Example:

public void foo(params string[] s) { ... }

We can call this method with:

a) foo(\"test\", \"test2\", \"test3\") //         


        

Answer 1

Just add your string to the array:

var newArray = new string[oldArray.length+1];
newArray[0]=yourString;
oldArray.CopyTo(newArray, 1);

foo(newArray);