Question

How to perform a case-insensitive search in VB.NET

Answer 1

Imports System
 
Public Class Program
    Public Shared Sub Main()
		Dim str As String = "The FOX Profession is VB Programmer"
        Dim toFind As String = "fox"
         
		Dim contains As Boolean = str.IndexOf(toFind, StringComparison.OrdinalIgnoreCase) >= 0
         
        Console.WriteLine(contains)
    End Sub
End Class
 
 
' run:
'
' True
' 

 

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Answer 2

Imports System
Imports System.Text.RegularExpressions
 
Public Class Program
    Public Shared Sub Main()
		Dim str As String = "The FOX Profession is VB Programmer"
        Dim pattern As String = "fox"
         
		Dim contains As Boolean = Regex.IsMatch(str, pattern, RegexOptions.IgnoreCase)
         
        Console.WriteLine(contains)
    End Sub
End Class
 
 
 
' run:
'
' True
' 

 

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