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ruturajpatki/IsValidDomainName.vb

Last active August 13, 2023 07:33
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VB.Net function to check if the specified domain name is in standard domain name format.
Raw
IsValidDomainName.vb
'Imports System.Text.RegularExpressions
Private Function IsValidDomainFormat(domainName As String) As Boolean
Dim pattern As String = "^(?![0-9]+$)(?!-)[A-Za-z0-9-]{1,63}(?<!-)(?:\.[A-Za-z]{2,})+$"
Dim regex As New Regex(pattern)
Return regex.IsMatch(domainName)
End Function
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