public static void Main()
string convertToInt = "12";
string nullString = null;
string maxValue = "32222222222222222222222222222222222";
string formatException = "12.32";
parseResult = int.Parse(convertToInt);
parseResult = int.Parse(nullString);
parseResult = int.Parse(maxValue);
parseResult = int.Parse(formatException);
parseResult = Convert.ToInt32(convertToInt);
parseResult = Convert.ToInt32(nullString);
parseResult = Convert.ToInt32(maxValue);
parseResult = Convert.ToInt32(formatException);