"System.FormatException", Message: "Input string was not in a correct format." code example

Example: input string was not in a correct format. c#

//Trying to incorrectly convert a to a type when the string 
// can not be converted. "5a00" is not a number
//use TryParse. Type.TryParse as in Int32.TryParse 
//or Double.TryParse or decimal.TryParse ...
string response = string.Empty;
int someNumber = 0;
string number2Convert = "5a00"; 
var success = Int32.TryParse(number2Convert, out someNumber);
if (!success) response = $"Incorrect number format  - '{number2Convert}'";
else response = $"The number is {someNumber}";
Console.WriteLine(response);