Convert.ToString() to binary format not working as expected

Question

int i = 20;
string output = Convert.ToString(i, 2); // Base2 formatting
i = -20;
output = Convert.ToString(i, 2);

Value   Expected                       


        

Answer 1

If you would get rid of this "effect" - use Math.Abs() method to get number value without sign,

string output = Convert.ToString(Math.Abs(i), 2); // Base2