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Manipulating a string

Posted on 2008-06-25
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Last Modified: 2010-04-30
Hello all

I have a string that looks like this  128050GWSOP. Is it possible to break this down into 2 variable2, one containing all the numbers the other containing all the letters. Not able to just count characters as it is not alwas the same, have to read characters and decide if a number or not

Many thanks

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Question by:bostonste
6 Comments
 
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Expert Comment

by:zhuba
ID: 21870858
If it is stored as an ascii string then the numbers 0-9 are the hex values 0x30 to 0x39 and the uppercase letters are the hex values 0x41 to 0x5A so if you have two if statements and compare them within those ranges then you can determine which variable to add them into.
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jpaulino earned 500 total points
ID: 21870859
Hi bostonste,

Try something like this:
        Dim str As String = "128050GWSOP"
        Dim myNumber As String = Nothing
        Dim myString As String = Nothing
        For Each c As Char In str
            If IsNumeric(c) Then
                myNumber &= c
            Else
                myString &= c
            End If
        Next
        Debug.Print(String.Format("Number:{0}, String:{1}", myNumber, myString))

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Expert Comment

by:Jaime Olivares
ID: 21870875
if your main goal is to determine if the string contains a valid number, you can use TryParse, like:

Dim s as String = "128050GWSOP"
Dim isNumber as Boolean
Dim number as Int64

isNumber = [Int64].TryParse(yourString, number)
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Expert Comment

by:zhuba
ID: 21870883
I'd forgotten about vb's isNumeric function, that's probably the best choice for what you're trying to do.
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Author Closing Comment

by:bostonste
ID: 31470812
Many thanks
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LVL 48

Expert Comment

by:jpaulino
ID: 21870892
Here's a easy way to do it:
        Dim str As String = "128050GWSOP"
 
        Dim myNumber As String = Val(str)
        Dim myString As String = str.Replace(myNumber, String.Empty)
 
        Debug.Print(String.Format("Number:{0}, String:{1}", myNumber, myString))

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