Michael,
"." matches any character except \n. To match a period you need to "escape"
it with a slash. "\." will match a period.
Try the following:
Const pattern As String = "^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$"
Static reg As New Regex(pattern, RegexOptions.Compiled)
Dim m As Match = reg.Match(txtIPAddress.Text)
If m.Success Then
'No need to do anything here
Else
MessageBox.Show("You need to enter a valid IP Address",
"Error!", MessageBoxButtons.OK, MessageBoxIcon.Hand)
End If
Unless I need the Match object specifically, I normally use Regex.IsMatch
instead.
Something like:
Const pattern As String = "^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$"
Static reg As New Regex(pattern, RegexOptions.Compiled)
If reg.IsMatch(txtIPAddress.Text) Then
'No need to do anything here
Else
MessageBox.Show("You need to enter a valid IP Address",
"Error!", MessageBoxButtons.OK, MessageBoxIcon.Hand)
End If
Hope this helps
Jay
"Michael R. Pierotti" <mr*@hafatel.com> wrote in message
news:uU**************@TK2MSFTNGP12.phx.gbl...
Dim reg As New Regex("^\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}$")
Dim m As Match = reg.Match(txtIPAddress.Text)
If m.Success Then
'No need to do anything here
Else
MessageBox.Show("You need to enter a valid IP Address", "Error!",
MessageBoxButtons.OK, MessageBoxIcon.Hand)
txtIPAddress.Focus()
Return
End If
I need to match a IP addy on this and I would think this should match only
a
x.x.x.x to xxx.xxx.xxx.xxx pattern yet it passes as a match when I input
192168121113
Any ideas what I am doing wrong here ?
Thanks,
Mike