Debug.WriteLine syntax

[ebellounisoft]

I do not have much experience in Debug syntax and can't find in any book or tutorial. I am only going to present the code line for the Debug.WriteLine. The Project runs fine. My problem is to understand the Debug syntax.

1. Debug code line:

Debug.WriteLine("a1) sb1.Length = {0}, sb1.Capacity = {1}", sb1.Length,sb1.Capacity)

2. Result:

a1) sb1.Length = 3, sb1.Capacity = 16

2. What is the meaning (or roll) of:

"a1) sb1.Length = {0}, sb1.Capacity = {1}"

And of:

{0}

and

{1}