How to do regular expressions / regex in Visual Basic?

[Ben Stones]

The Regex() method is in the System.Text.RegularExpressions namespace.

An example using regular expressions is below:

Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
        Dim URLPath As String = Request.Url.AbsolutePath()
        If Regex.IsMatch(URLPath, "(?i:^/eNlight-Howtos.aspx$)") Or Regex.IsMatch(URLPath, "(?i:^/Login.aspx$)") Or Regex.IsMatch(URLPath, "(?i:^/Submit-Howtos.aspx$)") Then
            ContactUsPanel.Visible = False
        End If
    End Sub

The regular expression is the second parameter of the IsMatch() method. The brackets around the regular expression is required because of the ?i: modifier, which essentially ignores case sensitivity (so eNlight-Howtos.aspx and enlight-howtos.aspx would still be returned as TRUE).

Other resources
Regular Expressions: What are they and how do I use them? | Official Web Hosting Blog by eUKhost Ltd.