Select Case In VB.NET

In this blog we will see alternate to If Else If  Structure i.e Select Case statement

Syntax

Select Case  Text Expression

Case  Expression1
Statment1

Case Expression2
Statement2

Else
Statement
End Select

Let us see an example using Select Case Statement.
Module Example10

    Sub Main()
        Dim MonthNum As Integer

        Console.WriteLine("Enter Month Name:")
        MonthNum = Console.ReadLine()

        Select Case MonthNum
            Case 1
                Console.WriteLine("January")
            Case 2
                Console.WriteLine("February")
            Case 3
                Console.WriteLine("March")
            Case 4
                Console.WriteLine("April")
            Case 5
                Console.WriteLine("May")
            Case 6
                Console.WriteLine("June")
            Case 7
                Console.WriteLine("July")
            Case 8
                Console.WriteLine("August")
            Case 9
                Console.WriteLine("September")
            Case 10
                Console.WriteLine("October")
            Case 11
                Console.WriteLine("November")
            Case 12
                Console.WriteLine("December")
            Case Else
                MsgBox("Invalid Input")
        End Select
        Console.ReadKey()
    End Sub

End Module

The above example is rewriteen of If Else If Example. You can use If Else If  or Select Case nothing is difference in performance.