Cool,, I was wondering once the URL is detected, is there a way of clicking that url in the richtextbox and lanuching a webpage of that link.
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how to detect a url in a richtextbox, vb.net
I am looking for codes examples for detecting a web page link in a rich textbox. I need help on this , I was wondering should a regex declaration be utilized. Thank you john
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Answers
The RichTextBox already does this for you....
See:
http://www.experts-exchang
Private Sub RichTextBox1_LinkClicked(B
System.Diagnostics.Process
End Sub
RichTextBox.LinkClicked():
http://msdn2.microsoft.com
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by: igor_alphaPosted on 2007-05-15 at 15:32:01ID: 19096882
Hello John81,
You can use following function to locate URLs in string:
Public Function Locate(ByVal pattern As String, ByVal TextFrom As String) As String
Dim text As String = TextFrom
Dim pat As String = pattern
Dim sb As StringBuilder = New StringBuilder
Dim r As Regex = New Regex(pat, RegexOptions.IgnoreCase)
Dim m As Match = r.Match(text)
While m.Success
For Each g As Group In m.Groups
Dim cc As CaptureCollection = g.Captures
For Each c As Capture In cc
If Regex.IsMatch(c.ToString, pat) Then
sb.Append("URL:" & c.ToString)
End If
Next
Next
m = m.NextMatch
End While
Return sb.ToString
End Function
Using:
Private Sub Button9_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button9.Click
Dim Pattern As String = "http(s)?://([\w-]+\.)+[\w
Dim s As String = Locate(Pattern, RichTextBox1.Text)
End Sub
If you want just detect that richtextbox contain Url you can do like following:
Dim Pattern As String = "http(s)?://([\w-]+\.)+[\w
Dim regex As Regex = New Regex(Pattern)
If regex.IsMatch(RichTextBox1
'match
Else
'dont't match
End If