How to add condition that values are not numbers

Question

like now, I just add one addition that less than 0, and I want to add one more condition that if the values that user entered are not numbers, still show the same messagebox.

        if(waist <= 0 || height <= 0)
        if (waist <= 0) {
            MessageBox.Show("Please enter a number that greater than 60");
        }
        if (height <=0 ) {
            MessageBox.Show("Please enther a number that greater than 120");
                }

It depends on how you parse them to int's.. What is the type of waist and height? — Arion, May 02 '16 at 07:40
To parse `double` specifically, see [this answer](http://stackoverflow.com/a/894325/1715579) to the linked question. — p.s.w.g, May 02 '16 at 07:45

M. Suurland · Accepted Answer · 2016-05-02T07:57:18.200

-1

You can do the following:

 String input = Console.ReadLine() //Or whatever you are using to catch the user input
int n;
    if(int.TryParse(input, out n)
    {
         //Your logic, use n or something
    }
    else
    {
         //print error that there is no numeric input
    }

edited May 02 '16 at 07:57

answered May 02 '16 at 07:42

M. Suurland

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but can i use out number? – Donald May 02 '16 at 07:43
what do you mean?, see edit, yes you can use "n" in this example – M. Suurland May 02 '16 at 07:54
And why did you down vote? – M. Suurland May 02 '16 at 08:05

How to add condition that values are not numbers

1 Answers1