Releated DesktopBased for validation code

[Jitendraimrb]

I have given a text box where when i press number key it should validate for number should accept only for Char digit,
so what will validation code ?

[chaarmann]

Just get the key pressed as char and test that it lies between >='0' and <='9'.
That is the validation code for a positive 1-digit natural number.
What else do you want to test for?

• numbers with more than one digit
• leading zeros
• minus sign
• floating point numbers
• exponent indicator
• complex numbers