Question

How to convert a string lowercase characters to uppercase and uppercase to lowercase with VB.NET

Answer 1

Imports System
Imports System.Text
 
Public Class Test
	Public Shared Function flip_characters(s As String) As String
         Dim len As Integer = s.Length
		Dim sb As StringBuilder = new StringBuilder(s)
 
         For i As Integer = 0 To len - 1
             If (s(i) >= "A" And s(i) <= "Z") Then
                  sb(i) =  Char.ToLower(s(i))
			 ElseIf (s(i) >= "a" And s(i) <= "z") Then   
                 	  sb(i) = Char.ToUpper(sb(i))
                  End If
         Next
 
         return sb.ToString()
    End Function
 
    Public Shared Sub Main()
		Dim s As String = "vB.Net pRograMMinG" 
       
		s = flip_characters(s)
	
        Console.Write(s)
    End Sub
End Class
 
 
' run:
'
' Vb.nET PrOGRAmmINg

 

70+ SQL courses for beginners and professionals