Question

How to extract lowercase characters from a string in VB.NET

Answer 1

Imports System
 
Public Class Test
    Public Shared Function extract_lowercase(s As String) As String
         Dim len As Integer = s.Length
         Dim lower_s As String = ""

         For i As Integer = 0 To len - 1
             If (s(i) >= "a" And s(i) <= "z") Then   
                 lower_s = lower_s + s(i) 
             End If
         Next
 
         return lower_s
    End Function
 
    Public Shared Sub Main()
        Dim s As String = "vVb.BnNeETt" ' vb.netVB.NET
        Dim lc As String = extract_lowercase(s)
        
        Console.Write(lc)
    End Sub
End Class
 

 
' run:
'
' vbnet

 

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