How to compare two arrays of string?

Question

I want to compare two string arrays. I don\'t know how to implement this in vb.net.

Let\'s say I have two arrays

Dim A() As String = {\"Hello\", \"H         


        

Answer 1

With Linq use Except() to find the differences between the two arrays and Intersect() to find which elements are in both arrays.

Imports System.Linq

Module Module1
    Sub Main()
        Dim A() As String = {"Hello", "How", "Are", "You?"}
        Dim B() As String = {"You", "How", "Something Else", "You"}

        Console.WriteLine("A elements not in B: " + String.Join(", ", A.Except(B)))
        Console.WriteLine("B elements not in A: " + String.Join(", ", B.Except(A)))
        Console.WriteLine("Elements in both A & B: " + String.Join(", ", A.Intersect(B)))

        Console.ReadLine()
    End Sub
End Module

Results:

A elements not in B: Hello, Are, You?
B elements not in A: You, Something Else
Elements in both A & B: How