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vb.net replace

Posted on 2010-11-15
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Last Modified: 2012-06-27
hello there,
how can I replace some data from a string.. for example I have multiple "name1" in a string but I would like to replace from the first "name1" to "name2"
how can I do that?
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Question by:XK8ER
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5 Comments
 
LVL 7

Expert Comment

by:EYoung
ID: 34140420
Does the first "name1" occur in the same place?

If not, you could use an IF statement to test if the string exists.  If it does exist, then do the replace using the substr function, then EXIT the IF statement.
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LVL 47

Accepted Solution

by:
Wayne Taylor (webtubbs) earned 250 total points
ID: 34141809
See String.Replace method...
    Dim s As String = "some text, name1, some more text, name1"
    s = s.Replace("name1", "name2")

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Wayne
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LVL 7

Expert Comment

by:EYoung
ID: 34142433
Are you trying to replace just the first occurance or all occurances of "name1"?
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LVL 86

Assisted Solution

by:Mike Tomlinson
Mike Tomlinson earned 250 total points
ID: 34142454
Replacing only the first occurrence could be done with:
Dim s As String = "some text, name1, some more text, name1"

        Dim find As String = "name1"
        Dim replaceWith As String = "name2"
        Dim index As Integer = s.IndexOf(find)
        If index <> -1 Then
            s = s.Remove(index, find.Length)
            s = s.Insert(index, replaceWith)
        End If

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LVL 17

Expert Comment

by:Zhaolai
ID: 34142563
Try this:
Dim oldStr As String = "some string name1 new string name1 test"
Dim newStr As String = Replace(oldStr, "name1", "name2", , 1)

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