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Check for string????

Posted on 2007-04-07
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Last Modified: 2010-04-23
How would you use "instr" to check for a particular type of string?

I need to check strings like the following strings:

5555550129@archwireless.net5555550139@archwireless.net
5555550129@archwireless.com5555550139@archwireless.net

that I need to separate like this:

5555550129@archwireless.net 5555550139@archwireless.net
5555550129@archwireless.com 5555550139@archwireless.net

So, I somehow need to check if there is a "t" or a "c" followed by a number and then add a space bewteen the "t" or "c" and the number.

thanks

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Question by:rkckjk
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Expert Comment

by:Fernando Soto
ID: 18869547
Hi rkckjk;

This will do what you need.

Imports System.Text.RegularExpressions

        ' Test Data
        Dim input() As String = {"5555550129@archwireless.net5555550139@archwireless.net", _
            "5555550129@archwireless.com5555550139@archwireless.net"}
        ' The Regular Expression pattern to parse the input
        Dim pattern As String = "(\d+@archwireless.(?:net|com))(\d+@archwireless.(?:net|com))"
        Dim idx As Integer = 0

        For Each email As String In input
            ' Parse the input
            input(idx) = Regex.Replace(input(idx), pattern, "$1 $2")
            idx += 1
        Next

        ' Display Results
        MessageBox.Show(input(0) & Environment.NewLine & input(1))

Fernando
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Author Comment

by:rkckjk
ID: 18869566
Sorry, I should have mentioned the string data is in a textbox and also archwireless is not a constant. It could be sprintpcs or other providers
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Author Comment

by:rkckjk
ID: 18869590
You can't convert a textbox to an array
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LVL 62

Expert Comment

by:Fernando Soto
ID: 18869600
Same thing just different input and a small change to the pattern allowing any domain.

        Dim pattern As String = "(\d+@.+?\.(?:net|com))(\d+@.+?\.(?:net|com))"
        TextBox1.Text = Regex.Replace(TextBox1.Text, pattern, "$1 $2")
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Expert Comment

by:Fernando Soto
ID: 18869608
The question did not say that the text string was in a text box.
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Accepted Solution

by:
Fernando Soto earned 500 total points
ID: 18869635
This version will allow for more then two consecutive patterns without a space between them to be parsed.

        Dim pattern As String = "(\d+@.+?\.(?:net|com))"
        TextBox1.Text = Regex.Replace(TextBox1.Text, pattern, "$1")
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LVL 62

Expert Comment

by:Fernando Soto
ID: 18869856
Sorry missed a space after the $1 below

        Dim pattern As String = "(\d+@.+?\.(?:net|com))"
        ' Should be this
        TextBox1.Text = Regex.Replace(TextBox1.Text, pattern, "$1 ")
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