What does this mean?

Question

Unhandled Exception: System.FormatException: Input string was not in a correct format.
at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
at System.Convert.ToInt32(String value)
at SoloLearn.Program.Main(String[] args)

Answer 1

It means that you got the wrong type of string,double,bool,char,int

Answer 2

Lol you know the answer...?

Answer 3

the typing syntax is wrong
e.g : Conslole.WriteLine =/= consloe.writeline
you should pay attention to capital letters.