I'am trying to split numbers and strings and put them on a Textbox (numbers only)

I was able to do that , but I only get the Last value on the textbox. It's probably pretty simple but since I'am new on C# ...
So what I want to do is get the two values on different Text Boxes. 
8 on one & 17 on another . 

```
 string Stack = "azersdj8qsdfqzer17";

        string[] digits = Regex.Split(Stack, @"\D+");

        foreach (string value in digits)
        {

            int number;
            if (int.TryParse(value, out number))
            {
                textoutput.Text = value.ToString();
            }
        }

```