how to parse a string to an integer c#

var myInt = int.Parse("123"); // this one throw exception if the argument is not a number
var successfullyParsed = int.TryParse("123", out convertedInt); //this returns true if the convertion has been successfully done (integer is stored in "convertedInt"), otherwise false. 

Int16.Parse("100"); // returns 100
Int16.Parse("(100)", NumberStyles.AllowParentheses); // returns -100

int.Parse("30,000", NumberStyles.AllowThousands, new CultureInfo("en-au"));// returns 30000
int.Parse("$ 10000", NumberStyles.AllowCurrencySymbol); //returns 100
int.Parse("-100", NumberStyles.AllowLeadingSign); // returns -100
int.Parse(" 100 ", NumberStyles.AllowLeadingWhite | NumberStyles.AllowTrailingWhite); // returns 100

Int64.Parse("2147483649"); // returns 2147483649

string userInput = Console.ReadLine();
int convert;
Int32.TryParse(userInput, out convert);  // Converting String to int

    string str = "10s";
 
    int x = Convert.ToInt32(str);
	Console.WriteLine(x);

string a = ("2");
int b = Convert.ToInt16(a)

int number;
bool result = int.TryParse("12345", out number);
if(result)
                {
                    // Do whatever.
                }
                else
                {
                    // Failed to parse.
                }

 // Ask user for fave number
      Console.Write("Enter your favorite number!: ");
      
      // Turn that answer into an int
      int faveNumber = Convert.ToInt32(Console.ReadLine());

int x = Convert.ToInt32("1234");

string str = "100";
 
        int x = Int32.Parse(str); // or int.Parse();
        Console.WriteLine(x);