Validating user input

Hello! I couldn't find any threads about this on the forums.

What is the best way to validate user input in "real time"?

I do not want the user to be able to type in the TextField if the button he presses is not a number.

Would it be to check the current key which is being pressed, or maybe make a regex?

 

Either that or constantly watch the text field's display string removing any non-numeric characters (again, using regular expressions being the path of choice).

 

Allright, thanks

Ended up doing this:

Code (csharp):

1.  
2. using UnityEngine;
3. using System.Text.RegularExpressions;
4.  
5. public class ValidateInputTest: MonoBehaviour
6. {
7.  Regex numberRegex = new Regex("[0-9]");
8.  Rect numberPosition = new Rect(10, 10, 20, 20);
9.  string numberText = "";
10.  
11. void OnGUI()
12. {
13.  if (numberRegex.IsMatch(Input.inputString))
14.   numberText = GUI.TextField(numberPosition, numberText, 2);
15.  else
16.   GUI.TextField(numberPosition, numberText, 2);
17. }
18. }
19.  
20.  

 

How would you go about doing this in Javascript? I tried using:

Code (csharp):

1. using UnityEngine;
2. using System.Text.RegularExpressions;

And it throws an error on the first line, so im assuming this is MonoScript? Is there a Javascript equivalent?

 

It's C#. In Javascript, use "import" instead of "using". Also you don't need to import UnityEngine (that's automatic).

--Eric