Check out example codes for "how to parse a string to an integer c#". It will help you in understanding the concepts better.

Code Example 1

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

Code Example 2

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.

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