Question Highlight numbers using regex?

[vlad__28]

Hello guys,
I have a question about regular expressions

I want to highlight in a richtextbox only telephone numbers...from a phrase or a sentence.
I managed till now to search the textbox and to show a message about all the numbers but i want to highlight them and i need your help please.

Thanks in advance

 

[JohnH]

You can loop through the results returned by Regex.Matches Method (System.Text.RegularExpressions), for each match use RTB.Select Method (Int32, Int32) (System.Windows.Forms) (using Match.Index, Match.Length) and apply highlight formatting using for example RTB.SelectionBackColor property.

 

[vlad__28]

ok, so i tell the program to find in all the text, 10 numbers in rtb1.text

Dim r As Regex = New Regex("\b\d{10}", RegexOptions.Multiline)
Dim Mtch As MatchCollection = r.Matches(RichTextBox1.Text)

Now i am creating a result:

Dim result As String = ""
Dim i As Integer
For i = 0 To Mtch.Count - 1
Dim mat As Match = Mtch.Item(i)
result = result & vbCrLf & mat.Value

How can i link this result to rtb.select method ?

I am a beginer so excuse me for all the dumb questions.
Thanks alot for helping me

 

[JohnH]

I mentioned the Match has Index property and Length property, that is the values you supply to Select method.

 

[vlad__28]

I understood that but tell me please if my code is correct till now or should i start from scratch. Your oppinion is valuable for me, thank you for replying.

 

[JohnH]

It is correct, so far, but can be written much simpler:

For Each m As Match In Regex.Matches(RichTextBox1.Text, "\b\d{10}")

Next

RegexOptions.Multiline is not needed, it has a different meaning than you think.