Remove Specific Value From List In VB.NET

Question

I have a list of values, these are all a combination of letters and numbers, to make an ID, however on some occasions this can just simply be a 0.

I need to remove all occasions where this is a 0.

I've tried something like

For i = 0 the list.count - 1

   If list(i) = "0" Then

       list.RemoveAt(j)

   End If

Next

But this then throws an argument out of range exception at the end because the loop continues, and I can't use Exit For because I need to check for multiple zeros.

I'm not very good at the Lamda expressions that seem to do what I want, and don't understand them, so if someone could give and explain one that would work, that'd be brilliant.

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Answer 1

Start from the end of the list and go backwards toward 0

For i = list.count - 1 to 0 Step -1
   If list(i) = "0" Then
       list.RemoveAt(j)
   End If
Next

If you want to use linq with a lambda use Where to keep all items that are not equal to "0" and recreate the list with ToList

list = list.Where(function(value) value <> "0").ToList

The lamda in this case is the same as

Function IsNotZero(value As String) As Boolean
    return value <> "0"
End Function

Remove Specific Value From List In VB.NET

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