I have a list(of string)
and I search it to get a start and end range, I then need to add that range to a separate list
ex: List A = "a" "ab" "abc" "ba" "bac" "bdb" "cba" "zba"
I need List B to be all the b's (3-5)
What I want to do is ListB.Addrange(ListA(3-5))
How can I accomplish this??
Use List.GetRange()
Imports System
Imports System.Collections.Generic
Sub Main()
' 0 1 2 3 4 5 6 7
Dim ListA As New List(Of String)(New String() {"a", "ab", "abc", "ba", "bac", "bdb", "cba", "zba"})
Dim ListB As New List(Of String)
ListB.AddRange(ListA.GetRange(3, 3))
For Each Str As String In ListB
Console.WriteLine(Str)
Next
Console.ReadLine()
End Sub
or you can use Linq
Imports System
Imports System.Collections.Generic
Imports System.Linq
Module Module1
Sub Main()
' 0 1 2 3 4 5 6 7
Dim ListA As New List(Of String)(New String() {"a", "ab", "abc", "ba", "bac", "bdb", "cba", "zba"})
Dim ListB As New List(Of String)
ListB.AddRange(ListA.Where(Function(s) s.StartsWith("b")))
' This does the same thing as .Where()
' ListB.AddRange(ListA.FindAll(Function(s) s.StartsWith("b")))
For Each Str As String In ListB
Console.WriteLine(Str)
Next
Console.ReadLine()
End Sub
End Module
Results: