How to declare a variable in Block Scope

Variable declaration is a great new way to make your application performance better like a new feature Block level scope declaration in this you can declare the variable for entire procedures when all you need is a counter in a block. The advantage of using block scoped variables is that they go out of scope once your code exists the block of code in application .

Example Code

    Module Module1
        Sub Main()
            Dim A As Integer
            For A = 1 To 5
                Dim N As Long
                N = N + A
            Next
            Dim J As Integer
                For J = 1 To 4
                    For A = 1 To 5
                        Dim b As Long
                        Console.WriteLine("Value: {0}", b)
                        b = b + A
                    Next
                Next
            Console.ReadLine()
        End Sub
    End Module

OUTPUT

CONCLUSION

In this article you can see how to declare block scope variable and like the output you saw b retains its value between executions of the inner loop.