vb.net string value merged to one

Question

I have a set of strings:

What I want to do is take all of the values and merge them together so I can get an output like this:

121010

121011

For instance, a listbox should search through that string and then give each result as a list item, if there was 400 "121010" values it would display as one value.

I have looked every where for a solution but I am now totally lost.

Any sort of reference would be appreciated.

Can you post sample input? your samples doesn't seems to be good enough to understand — Linga, Feb 12 '14 at 08:53
So you have a single string or do you have a collection of strings (like a `List(Of String)`? If you have a collection, look into the `Distinct` extension method, or use a `HashSet` as collection. — sloth, Feb 12 '14 at 08:54
Sorry, my mistake. each line is a separate string. I will look into it, Thanks. — Dylan de St Pern, Feb 12 '14 at 08:56

score 2 · Accepted Answer · answered Feb 12 '14 at 08:55

2

You can use the Distinct-extension-method:

Dim lst As New List(Of String)()
lst.Add("121010")
lst.Add("121011")
lst.Add("121010")
lst.Add("121011")
Dim distinctEntries = lst.Distinct()

As you are comparing strings, you might want to consider an overload that also takes a comparer as input (in order to handle the casing of the letters in the way you want):

Dim distinctEntries = lst.Distinct(StringComparer.OrdinalIgnoreCase)

answered Feb 12 '14 at 08:55

Markus

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Thank you, the only problem is that the log, which contains the string, has over 50 000 lines. So that's where I am stuck. – Dylan de St Pern Feb 12 '14 at 08:59

score 0 · Answer 2 · answered Feb 12 '14 at 08:55

0

Your question suppose to be how to display unique list

Before adding to listbox,

check whether item is added already
If not, add it.

This is a basic coding style of check.

In the advance style of coding, you can use Distinct()

answered Feb 12 '14 at 08:55

Siva Charan

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score 0 · Answer 3 · edited May 23 '17 at 10:25

0

You can use HashSet collection as below:

''String array.
    Dim a As String() = {"121010", "121010", "121011", "121011"}

    ' Create HashSet.
    Dim hash As HashSet(Of String) = New HashSet(Of String)(a)

    ' String array.
    a = hash.ToArray()

HashSet VS Distinct.

edited May 23 '17 at 10:25

Community

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answered Feb 12 '14 at 09:14

binarymnl

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vb.net string value merged to one

3 Answers3