Can't parse an INT from text in a TextMeshPro Input Field

Unity Engine
1

This is a weird error. I have a TextMeshPro input field that has a content type of Integer to ensure only integers are entered. When I do int.Parse() it throws the “not in a correct format” error, even though it’s an integer.

I enter something like 123 into the text field and it throws the error. If I test the int.Parse(“123”) it works fine, but if I use the text from the input field it doesn’t.

Does anyone know what’s up?

Example of the code:

string inputText = tmProInput.text.ToString(); // Enter 123 as the input, only integers are allowed
Debug.Log("Input text: *" + inputText + "*");
int inputInt = int.Parse(inputText); // This Fails
int inputInt = int.Parse("123"); // This Works
2

This was a really good idea:

Debug.Log("Input text: *" + inputText + "*");

Can you tell us what it printed?
Another good idea would be:

Debug.Log($"Input string length is {inputText.Length}");
3

It prints out 123 That’s why I’m so confused.

4

And what does it print out for length of the string? I’d wager probably 4 or more. You may have an invisible character in there.

5

Yup, it’s 4, but not sure how to check or get rid of the extra character, no idea what is it.

6

You can use Regex to filter the string to only integers, my guess is that the last character is some end-of-line character.

         var matches = Regex.Matches(str1, @"\d+");
         foreach(var match in matches){
            str2 += match;
         }
         val = int.Parse(str2);

Stolen from somewhere on the internet.

7

Yup the end of line is. I looped through and it has some odd character that doesn’t print, even though it’s set to “Single Line”. I just Substring the text to the length minus 1 and it worked. I had another input field it was doing the same thing to.

8

I would recommend using https://docs.microsoft.com/en-us/dotnet/api/system.string.trim?view=net-7.0 instead.