Question

How to check if a string has only whitespace or is empty in VB.NET

Answer 1

Imports System

Public Class Program
	Public Shared Sub Main()
        Dim str1 As String = "c#"
		
        Dim str2 As String = "     "
        Dim str3 As String = ""
		
        Console.WriteLine(String.IsNullOrWhiteSpace(str1))
        Console.WriteLine(String.IsNullOrWhiteSpace(str2))
        Console.WriteLine(String.IsNullOrWhiteSpace(str3))
    End Sub
End Class




' run:
'
' False
' True
' True
'

 

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