IsNumeric function on an empty field.

  • Thread starter Thread starter James
  • Start date Start date
J

James

Simple question...

If you execute a block of statements that uses the IsNumeric function
on a text box that contains no data, will it cause a run time error?
Thanks

looks like this:

If IsNumeric(txtInput.Text) = True Then
MessageBox.Show("Numeric entry found")
Else
MessageBox.Show("Non-numeric entry found", _
"Compound If") :
btnClear.Focus()
End If


I think this could be a possible test question and i just want to
understand what would happen. Thanks!
 
James said:
If you execute a block of statements that uses the IsNumeric function
on a text box that contains no data, will it cause a run time error?
Click to expand...

Why don't you try it and see?
 
James said:
If you execute a block of statements that uses the IsNumeric function
on a text box that contains no data, will it cause a run time error?
Thanks
Click to expand...

As Oenone posted, you could have coded this up in about 2 minutes
instead of waiting all this time for a response from someone else. I
know I am guilty of this every once in awhile, but I try to test things
myself first.

In any event, you can also use the TryParse method of most numeric
types to try the conversion.
 
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