Question

How to check if a string contain only letters in VB.NET

Answer 1

Imports System
				
Public Module Module1
	Function isInAlphabeticalCharacters(ByVal s As String)
		For i = 0 To s.Length - 1
			If Not Char.IsLetter(s.Chars(i)) Then
				Return False
			End If
		Next

		Return True 
	End Function
	Public Sub Main()
		Dim s1 As String = "vb.net java c c++"
		Console.WriteLine(isInAlphabeticalCharacters(s1))
		
		Dim s2 As String = "abcxyz"
		Console.WriteLine(isInAlphabeticalCharacters(s2))
	End Sub
End Module



' run:
'
' False
' True
'

 

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