.NET regular expressions string match replace
String match using regular expressions – VB.NET
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Import Imports System.Text.RegularExpressions 'regularExpression_Match -> regular expression pattern to macth Dim regularExpression_Match As New Regex("(.*)REGULAR EXPRESSION MATCH PATTERN(.*)") 'txtInput.txt -> Text to macth against regularExpression_Match pattern Dim myMatch As Match = System.Text.RegularExpressions.Regex.Match(txtInput.Text, regularExpression_Match) If myMatch.Success Then 'Do Something End If |
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If Regex.IsMatch( userInputString, "\d+(\.?\d+)" ) Then ' perform some conversion and math operations here End If |
String replace using regular expressions – VB.NET
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Try 'regularExpression_Replace -> regular expression pattern to replace Dim regularExpression_Replace As New Regex("(.*)REGULAR EXPRESSION REPLACE PATTERN(.*)") 'txtInput.txt -> Text to macth and replace against Dim txtReplacementPattern As String txtReplacementPattern = "THIS WILL BE MY REPLACED TEXT" 'txtReplacementPattern = "$$2 $$1" txtInput.Text = regularExpression_Replace.Replace(txtInput.Text, _ txtReplacementPattern) Catch ex As Exception Mess |