How Do I Sort Out The Repeating Element In A Listbox And Add Those Elements To Another Listbox

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Dim temp() As Integer = {1, 2, 2, 3, 4}
Dim i As Integer

For count = 0 To temp.Count - 1
If (temp(i).ToString = temp(i + 1).ToString) Then
ListBox2.Items.Add(i)
End If
Next

It shows me error like index was out of boundary. Please help me out

Posted 3-Aug-14 11:18am

Surajit Das

Updated 3-Aug-14 12:08pm

v2

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[no name] 3-Aug-14 18:06pm

You really need to learn how to debug your own applications. What element would you expect to get from your temp array the first time through (temp(0 - 1))? What element is at temp(-1)?

[no name] 3-Aug-14 18:30pm

And now that you have edited your code, the code you have presented here, will not produce the error described. And why would you compare temp(0) to temp(1) over and over?

Surajit Das 3-Aug-14 18:33pm

so do you think i should use the while loop and use a counter and increment it

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Alberto Montibelli · Answer 1 · 2014-08-03T12:41:00

Solution 1

Hi Surajit,
maybe you can use something like this:

Dim temp() As Integer = {1, 2, 2, 3, 4}
Dim i As Integer

For i = 0 To temp.Count - 2
If (temp(i) = temp(i + 1)) Then
ListBox2.Items.Add(temp(i))
End If
Next i

I Hope this is useful for you.

Posted 3-Aug-14 12:41pm

Alberto Montibelli