My Application Exits on parsing an int value

Question

My Application Exits when i parse a string to int.. I can't solve the problem as I am new to C# in-fact I am new to Programming, Here is my code so far:

public string Reverse(string str)
{
  int num = int.Parse(str);
  int reverse = 0;
  while(num > 0)
  {
    reverse *= 10;
    reverse += num % 10;
    num /= 10;
  }
  return (reverse.ToString());
}

I don't want it to quit the Application

Is this a command line exe? winforms? wpf? You need to give more information. What is calling your method? — rory.ap, Feb 12 '16 at 13:11
it is ok when i input a correct string but exits when an invalid string is passed @EhsanSajjad — Jamshaid K., Feb 12 '16 at 13:14

MaYaN · Accepted Answer · 2016-02-12T13:17:49.677

3

Use the TryParse pattern instead:

int parsedNumber;
var success = int.TryParse("1", out parsedNumber);

On another note, a much better Reverse algorithm is to do:

public static string Reverse(string s)
{
    char[] charArray = s.ToCharArray();
    Array.Reverse(charArray);
    return new string(charArray);
}

edited Feb 12 '16 at 13:17

answered Feb 12 '16 at 13:12

MaYaN

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My Application Exits on parsing an int value

1 Answers1