is_numeric control number

**sk.Silvia**

hi there
is there a simple way to control if input-string is a real number (like in php is_numeric) (so i dont have to go by each char, count the dots and ask if char is in 0-9...)

smt like
if ReturnedError(strtofloat(input)) then ShowMessage('you dont entered a valid real number');

**Thorben77**

Hi Silvia,
you may have a look at the Delphi-Referenz durchsuchen

TryStrToFloat function

.

**DGL-luke**

markieren

Delphi-Quellcode:

			if not trystrtofloat(somestring,somefloat) then

  Showmessage('Doh!');

// I knew i couldn't be the first one...

is_numeric control number

is_numeric control number

Re: is_numeric control number

Re: is_numeric control number

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sk.Silvia Registriert seit: 8. Feb 2006 Ort: Slovenia 90 Beiträge Delphi 7 Personal	#1 is_numeric control number 17. Jul 2006, 14:57 hi there is there a simple way to control if input-string is a real number (like in php is_numeric) (so i dont have to go by each char, count the dots and ask if char is in 0-9...) smt like if ReturnedError(strtofloat(input)) then ShowMessage('you dont entered a valid real number');
	Zitat

Thorben77 Registriert seit: 22. Okt 2004 359 Beiträge	#2 Re: is_numeric control number 17. Jul 2006, 15:05 Hi Silvia, you may have a look at the TryStrToFloat function .
	Zitat