Thread: Check if integer or float!

You could try this:-

Code:

Try
  Convert.ToInt16(value)
catch
  'not an integer
end try

Originally Posted by micky

will this fail if the entered value is not an integer??

It should throw an exception if it fails which it would if the value wasn't an integer....

You could put this into a function....

You could use a regex match instead if you wanted...

Try something like this:-

Code:

Dim regex_int as Regex = New Regex("^[0-9]$")
Dim regex_int_dec as Regex = New Regex("^[0-9]+\.[0-9]{1,2}$")
 
if regex_int.IsMatch(value) or regex_int_dec.IsMatch(value) then
'value matches either regex
else
'value doesn't match either regex
end if

<edit>Actually I suppose you could just use Dim regex_int as Regex = New Regex("^[0-9\.]$")</edit>

Another way that should work is using TryCast. See here: TryCast