How can I make an input field only take in numbers and decimals?

Questions & Answers
1

I want to make an ip input field… how can I disable any other characters?

2

You could check the string the user entered contains stuff you don’t want after every character input via…

myString.Contains("a")

and then, if yes, immediately delete it.

via…

myString = myString.Remove(myString.length - 1);

You’ll need a lot of checks for all sorts of characters, though.

a faster way would be to iterate through the string and remove a character if it is not 1,2,3, if the set of characters you allow is smaller than the set of characters you disallow.

3