Question

How to extract a substring between two tags using RegEx in VB.NET

Answer 1

Imports System
Imports System.Text.RegularExpressions

Public Class Program
    Public Shared Sub Main()
		Dim str As String = "abcd <tag>efg hijk lmnop</tag> qrst uvwxyz"
        Dim content As String = ExtractContentBetweenTags(str, "tag")

        If Not String.IsNullOrEmpty(content) Then
            Console.WriteLine($"Extracted content: {content}")
        Else
            Console.WriteLine("No matching tags found.")
        End If
    End Sub

	Public Shared Function ExtractContentBetweenTags(ByVal str As String, ByVal tagName As String) As String
        Dim pattern As String = $"<{tagName}>(.*?)</{tagName}>"
        Dim match As Match = Regex.Match(str, pattern)

        If match.Success Then
            Return match.Groups(1).Value
        End If

        Return String.Empty
    End Function
End Class

 
' run:
'
' Extracted content: efg hijk lmnop
'

 

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