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| Title | Use regular expressions to replace text in a string in VB .NET |
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| Description | This example shows how to use regular expressions to replace text in a string in VB .NET. It uses the Regex class's Replace method to make the replacements. |
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| Keywords | regular expression, string, parsing, parse, replace |
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| Categories | Strings, Algorithms |
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The program creates a Regex object, passing its constructor a regular expression pattern that will identify text to replace. It calls the object's Replace method, passing it the replacement pattern.
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Private Sub btnGo_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles btnGo.Click
Dim reg_exp As New Regex(txtPattern.Text)
lblResult.Text = reg_exp.Replace(Me.txtTestString.Text, _
txtReplacementPattern.Text)
End Sub
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In this example, the search pattern is "[aeiouAEIOU]" and the replacement pattern is "." so the program replaces all instances of vowels with periods.
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